weight reduction
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 6,226
Likes: 33
From: Morton illinois
St. Jude Donor '14-'15
not much. 4 lbs or so. and I can stand on it too. all 200 lbs of me and not bend the splitter .it is an OVERLAY splitter. Not just under neath but up to the brake duct holes
Front facia, OEM is 12 lbs, fiberglass with kevlar weave facia 6 lbs with ACP splitter 10 lbs
OEM rear fenders 4 lbs each -ACP with 3/4" flair 3 lbs
OEM rear facia 12 lbs ACP rear facia with 1" spoiler 10 lbs
Carbon fiber is much much lighter, will make your wallet lighter too.
corvetteracebodies.com look under C5 World Challenge body parts.
Full carbon fiber body, expect front and rear facia $26K saves 20 some pounds.
Note: Front 2" splitter should not be use without a 1" rear spoiler pointing up at 45* angle
adding lightness takes a deep deep pocket.
Front facia, OEM is 12 lbs, fiberglass with kevlar weave facia 6 lbs with ACP splitter 10 lbs
OEM rear fenders 4 lbs each -ACP with 3/4" flair 3 lbs
OEM rear facia 12 lbs ACP rear facia with 1" spoiler 10 lbs
Carbon fiber is much much lighter, will make your wallet lighter too.
corvetteracebodies.com look under C5 World Challenge body parts.
Full carbon fiber body, expect front and rear facia $26K saves 20 some pounds.
Note: Front 2" splitter should not be use without a 1" rear spoiler pointing up at 45* angle
adding lightness takes a deep deep pocket.
I meant how much did it cost. and you should front a front splitter without a rear lip? why?
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
LOL http://www.corvetteracebodies.com/wo...ice%20list.htm
About $250
No a front splitter with out a 1" rear spoiler will cause too much front downforce and push the nose of the car into the ground. or bottom out the springs. Plus take wt off the rear wheels.
Now you can do a rear spoiler without a front splitter. Just adjust the rake of the car for the added rear downforce. downforce is felt at speeds as low as 45 mph. and at 80+ mph there is a big difference. at 120+ there is so much stick or downforce that your top speed becomes less do the downforce or drag
Melting Slicks
Joined: May 1999
Posts: 2,365
Likes: 0
From: Vancouver BC
Racing seats, non pop-up headlights (which you already have), and a light exhaust (Ti with LTs and no cats) will already save you about 120-130 pounds. Then you could do the easy stuff, like empty the washer fluid, remove the hood liner, remove the lids in the rear cargo area, remove the floor mats, good for another 15 pounds. Then you can get new rotors with an aluminum hat, cf hood, racing slicks, aluminum pulley, good for about 60 pounds. Get rid of the carpet, another 50-60 pounds. That alone should get you under 3000 pounds.
etc etc etc...
etc etc etc...
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 6,226
Likes: 33
From: Morton illinois
St. Jude Donor '14-'15
DOH
LOL http://www.corvetteracebodies.com/wo...ice%20list.htm
About $250
No a front splitter with out a 1" rear spoiler will cause too much front downforce and push the nose of the car into the ground. or bottom out the springs. Plus take wt off the rear wheels.
Now you can do a rear spoiler without a front splitter. Just adjust the rake of the car for the added rear downforce. downforce is felt at speeds as low as 45 mph. and at 80+ mph there is a big difference. at 120+ there is so much stick or downforce that your top speed becomes less do the downforce or drag
LOL http://www.corvetteracebodies.com/wo...ice%20list.htm
About $250
No a front splitter with out a 1" rear spoiler will cause too much front downforce and push the nose of the car into the ground. or bottom out the springs. Plus take wt off the rear wheels.
Now you can do a rear spoiler without a front splitter. Just adjust the rake of the car for the added rear downforce. downforce is felt at speeds as low as 45 mph. and at 80+ mph there is a big difference. at 120+ there is so much stick or downforce that your top speed becomes less do the downforce or drag
do you have to rivit on? or did you just do that for your benifit? otherwise, how does it go on?
feel free to post more pics
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
Weight reduction
You can achieve substantial weight reduction with the following modifications, while still having a car that's very comfortable to drive. Most of these modifications will directly increase (and decrease in a few cases) the safety of the car, while safety is indirectly improved due to the better handling and limits of a lighter car. Fighter pilots say "speed is life". Acceleration, deceleration, and lateral acceleration are all forms of acceleration, and lighter cars accelerate better in each of these ways because the tires have less mass to control....thus a lighter car is a safer car. Lighter cars have better moments of inertia which allows them to turn in more easily and roll less. Lighter cars are also easier on the tires and gas.
All the stage weight estimates are typically wild butt guesses, but it makes it easy to see what is possible. The weight listings in the separate weight posting is MUCH more reliable.
Stage I: Streetable weight reduction mods
Non-popup headlights (~40 lbs)
Braking rotors with an aluminum hat, or titanium rotors (unproven on street cars) (~20-30 lbs)
Carbon fiber hood (~12 lbs)
Z06 (thinner) windshield and side windows (~5.7 lbs)
Non runflat tires (~20 lbs)
Slicks (~30 lbs)
Z06 wheels (~4 lbs est.)
Corsa titanium exhaust (~35 lbs)
Long tube headers (~20 lbs)
Halltech aluminum alternator & bracket (10 lbs)
Carbon fiber driveshaft (~2 lbs)
Newer torque tube
Less options [HUD, elec AC, Active Stability, seat/mirror/steering wheel memory, cd changer] (~50 lbs)
Less gasoline & wiper fluid (No wiper fluid=9lbs, 6 lbs for every gallon of gas in that 18 gallon tank....~81 lbs for autocrossing)
Remove
cargo net
targa top (~20 lbs)
BCM’s
C5 "appearance mods" - exhaust plates, doorsill covers, etc.
fuel rail covers
all loose change, CD's, golf clubs, misc. items, from center console, hatch area, and glove box
Replace
stock crank pulley with aluminum aftermarket pulley
steel dampener with aluminum dampener
stock targa top with lexan piece (coupes)
water pump with electric water pump
battery with smaller battery
non-stressed fasteners with aluminum or titanium fasteners
leaf springs with coil over shocks with titanium springs
steel shifter with aluminum shifter and delrin or titanium shift ****
Empty your pockets of extra change, PDA's, cell phones, keys, lead plates, or whatever other junk you lug around
Go on a diet =p
Stage II: Hardcore semi-streetable weight reduction mods
Aluminum flywheel (~10 lbs)
Lighter clutch like Exedy or Quartermaster (~10 lbs)
Racing buckets (40-50 lbs)
Off-road x-pipe (10 lbs)
Replace stock hood, fenders, doors, roof, hatch and bumpers with aftermarket carbon fiber pieces
Remove
Tire repair kit (Z06)
Floor mats
Fog lights
Stage III: Track only weight reduction mods
Racing steering wheel & delete both airbags (~30 lbs, but get a 4-6 point harness)
Use unpadded aluminum or carbon fiber steering wheel
Run open headers
Replace stock front and rear glass with polycarbonate “glass”
Rebuild motor with Al or Ti connecting rods, Ti valve spring retainers and pushrods
Port the heads
Replace valve covers with magnesium or carbon fiber parts
Strip entire car, acid wash chassis, put car back together.
Remore
Column locking hardware
Interior – passenger seat, carpets, speaker panels, head liner, dash, center console, glove box, door panels, sun visors, rear view mirror, insulation, etc.
A/C Compressor
A/C controls and ducting
AIR pump system
Factory radio, speakers, and/or CD changer, and unnecessary wiring
HUD projector
Windshield wiper fluid reservoir and pump
Windshield wipers and motors
Stock cat back
Power steering pump
Front sway bar (drag only)
ABS, TC, AH hardware and sensors (drag only)
Fender wells
Headlight assembly, turn signals, taillights and reflectors
Shave side mirrors
Torque tunnel cover
OEM seat belts
Parking brake
Side windows and motors
Power locks and power windows
Side impact beams
Casting flash from engine, then polish
Reducing unsprung weight—not all is streetable
Forged 1-piece wheels
Use 3-piece wheels by Jongbloed, Kodiak, CCW, BBS
Skinny front wheels (drag only)
Ti fasteners on 3-piece wheels (~1 lbs per wheel)
Lighter non-runflat tires, or even track only synthetic corded slicks
Lighter calipers
2-piece, unvented or titanium rotors
Titanium wheel studs
Aluminum or titanium lug nuts
Remove tire pressure sensors
Remove rubber valve stem cap
Balance the wheels without tires or balancing weights, and then mount tires
Great literature for hardcore techies
Helm’s Service Manual --- this should come with every Corvette IMHO
Key Design Developments of the 1997 Chevrolet Corvette (SAE SP-1282)
GM eSI Techline Service Manual
Nuts, Bolts and Fasteners and Plumbing Handbook, Carroll Smith
Drive to Win, Carroll Smith: The Essential Guide to Race Driving
Engineer to Win: The Essential Guide to Racing Car Materials Technology or How to Build Winners Which Don’t Break, Carroll Smith
Tune to Win, Carroll Smith
Fiberglass & Composite Materials: An Enthusiast’s Guide to High Performance Non-Metallic Materials for Automotive Racing and Marine Use
How to Make Your Car Handle, Fred Puhn
Race Car Vehicle Dynamics (SAE R146)
Racing & High Performance Tire: Using Tires to Tune for Grip and Balance (SAE R351)
Physics of Racing
--------------------------------------------------------------------------------
Last edited by leaftye; 12-22-2005 at 10:35 PM. Reason: Only took a year between updates!
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12-24-2004, 05:47 PM #2
leaftye
CF Senior Member
My Corvette Photos
Member Since: Nov 2003
Location: San Diego, CA "leaf" "tee" "e"
Component (OEM & aftermarket) weights
--------------------------------------------------------------------------------
C5 Suspension
Swaybars
18.5 lbs - T1 front anti-swaybar w/OEM adjustable endlinks & bushings - Src
8.5 oz - T1 OEM adjustable endlink - Src
3 oz - T1 OEM (endlink) bolt, nut and spacers - Src
5 oz - T1 OEM rear bushings (2) - Src
4.1 lbs - Z51 rear anti-swaybar w/OEM bushings - Src
3.6 lbs - Z51 rear anti-swaybar - Src
4.5 oz - Z51 rear OEM bushings (2) - Src
18.5 oz - Z51 OEM endlinks (2) - Src
9.5 oz - QA-1 endlinks - Src
6.5 oz - Lowe's 1/2" hole, 1.5 mm (avg) thick, 2" diameter (8) - Src
4 oz - Lowe's 1/2" hole, 2.25 mm (avg) thick, 3.5 cm diameter (8) - Src
Rotors
4.8 lbs - ZMI titanium ---Src
14 lb - rear left brake rotor from Napa, made in Canada, part# 86702 - Src
14 lb, 4 oz - rear right brake rotor from Napa, made in Canada, part# 86703 - Src
18 lb, 14 oz - front right brake rotor from Napa, made in USA, part# 86700 - Src
18 lb, 10 oz - front left brake rotor from Napa, made in Canada, part# 86701 - Src
Calipers
5.8 lbs - ZMI - Src
1/2 oz - single Speedbleeder - Src
Pads
1 lb, 2 oz - PFC Z-rated brake pads, single side, rear, without shim - Src
1/2 oz - PFC brake pad rear shim, single side - Src
2 lb, 5 oz - PFC Z-rated brake pads, single side, front, without shims - Src
3 oz - PFC brake pad front shims (2), single side - Src
Wheels
19.2 lbs, front; 21.4 lbs, rear - 97-99 OEM wagon - Src
22 lbs, front; 29 lbs, rear - 97-99 OEM wagon - Src
17 lbs, front; 19.5 lbs rear - 97-00 OEM magnesium - Src
17.5 lbs, front; 19.5 lbs, rear - 97-00 OEM magnesium - Src
18.08 lbs, front; 20.06 rear - 00 OEM standard, thin spoke, high polish - Src
17 lbs, front; 20 lbs, rear - 00 OEM standard, thin spoke, painted, no sensors or centercaps - Src
16 lbs, front; 20 lbs, rear - 01 OEM standard high polish - Src
19.6 lbs, front; 21.4 lbs, rear - 01 Z06 forged - Src
19.2 lbs, front; 21 lbs, rear - 02-04 Z06 cast/spun - Src, Src
24 lbs, 18x10.5 - 00+ repro high polish - Src
28 lbs, front; 32 lbs, rear - Z06 chrome repro - Src
23 lbs, front; 26 lbs, rear - Z06 chrome repro - Src
23.5 lbs, front; 24.5 lbs, rear - Z06 Motorsports, polished - Src
20 lbs, 17x8.5, 58mm offset, front; 23 lbs, 18x9.5, 65mm offset, rear - PWO - Src
22 lbs, 18x10.5, 58mm offset, front - HRE 545 w/clear center - Src
27 lbs, 18x12, 74mm offset, rear - HRE 545 w/clear center - Src
24/25 lbs - Z07 wheel weight, front - Src
28 lbs - Z07 wheel weight, rear - Src
Lugnuts
1.5 oz - OEM open lugnut - Src
Tires
NOTE: Kumho tires are not currently differentiated between runflat and nonrunflat tires.
29.5 lbs, front; 32.5 lbs, rear - Goodyear EMT, stock size - Src
27 lbs, front; 33 lbs, rear - Bridgestone S03's, stock size - Src
26.4 lbs - Goodyear GS-C 275/40R17 - Src
12 lbs, 275/40x17; 15 lbs, 315/35x17; 16 lbs, 305/30x18 - Hoosier A3S03 - Src
28 lbs, 275/40x17=28lbs; 30.5 lbs, 315/35x17 - Goodyear ZR "S" Rains - Src
25 lbs, 275/40x17; 28 lbs, 315/35x17 (shaved to 6/32") - Goodyear GS CS - Src
23lbs, 265/40x17; 24.5 lbs, 275/40x18; 25.5 lbs, 295/35x18 - Goodyear F1 GS CS - Src
27 lbs, 265/40R18; 28 lbs, 315/40R18 - Goodyear GS F1 SC - Src
25 lbs, 255/40R17 - Bridgestone Potenza S02 - Src
27 lbs, 275/40R18 - Bridgestone Potenza S02 - Src
29 lbs, 285/30R18 - Bridgestone Potenza S02 - Src
30 lbs, 285/30R18 - Bridgestone Potenza S02 - Src
30 lbs, 295/30R18 - Bridgestone Potenza S02 - Src
29 lbs, 295/35R18 - Bridgestone Potenza S02 - Src
28 lbs, 245/45R17 - Kumho Ecsta 711 - Src
29 lbs, 245/45R17 - Kumho Ecsta Supra - Src
32 lbs, 245/45R17 - Kumho Ecsta MX - Src
26 lbs, 245/45R17 - Kumho Ecsta Victoracer V700 - Src
30 lbs, 265/40R17 - Kumho Ecsta Supra - Src
20 lbs, 275/40R17 - Kumho Ecsta MX - Src
36 lbs, 275/40R17 - Kumho Ecsta MX - Src
25 lbs, 285/30R18 - Kumho Ecsta V700 - Src
TBD lbs, 295/35R18 - Kumho Ecsta ASX - Src
30 lbs, 295/35R18 - Kumho Ecsta Supra - Src
20 lbs, 275/35R18 - Kumho Ecsta MX - Src
31 lbs, 295/35R18 - Kumho Ecsta MX - Src
26 lbs, 305/30R18 - Kumho Ecsta V700 - Src
28 lbs, 315/35R18 - Kumho Ecsta V710 - Src
30 lbs, 335/30R18 - Kumho Ecsta V700 - Src
Tire Rack
Kumho ECSTA ASX Specs
245/45WR17 27 lbs
275/40WR18 30 lbs
UTQG: 420 AA A
Avon Tech M550 A/S Specs
245/45WR17 29 lbs
275/40WR18 34 lbs
UTQG: 360 AA A
Avon Tech M500 Specs
245/45WR17 28 lbs
275/40WR18 32 lbs
UTQG: 280 AA A
Continental ContiExtremeContact Specs
245/45WR17 24 lbs
275/40WR18 25 lbs
UTQG: 400 AA A
Kumho ECSTA MX Specs
245/45YR17 25 lbs
275/40YR18 29 lbs
UTQG: 220 AA A
Pirelli PZero Nero M&S Specs
245/45WR17 24 lbs
275/40WR18 29 lbs
UTQG: 400 AA A (front), 400 A A (rear)
BFGoodrich g-Force T/A KDW Specs
245/45YR17 28 lbs
275/40YR18 32 lbs
UTQG: 300 AA A
Goodyear Eagle F1 GS Specs
245/45YR17 25 lbs
275/40YR18 28 lbs
UTQG: 300 AA A
Kumho ECSTA MX (runflat) Specs
245/45YR17 32 lbs
275/40YR18 35 lbs
UTQG: 220 AA A
Continental ContiSportContact 2 Specs
245/45YR17 25 lbs
275/40YR18 26 lbs
UTQG: 280 AA A
Dunlop SP Sport 9000 Specs
245/45WR17 26 lbs
275/40WR18 29 lbs
UTQG: 280 A A
BFGoodrich g-Force T/A KD Specs
245/45YR17 27 lbs
275/40YR18 31 lbs
UTQG: 200 AA A
Goodyear Eagle F1 GS-D3 Specs
245/45YR17 25 lbs
275/40YR18 28 lbs
UTQG: 280 AA A
Michelin Pilot XGT Z4 Specs
245/45WR17 26 lbs
275/40WR18 30 lbs
UTQG: 300 A A
Bridgestone Potenza RE050 Specs
245/45WR17 26 lbs
275/40YR18 28 lbs
UTQG: 140 A A
Bridgestone Potenza S-03 Pole Position Specs
245/45YR17 28 lbs
275/40YR18 34 lbs
UTQG: 220 AA A
Goodyear Eagle F1 Supercar Specs
245/45YR17 24 lbs
275/40YR18 27 lbs
UTQG: 220 AA A
Wheel & Tire combined weight
45 lbs, front - 97-00 OEM magnesium w/Nitto 275/40-17 (1/2 tread) - Src
50 lbs, rear - 97-00 OEM magnesium w/Yoko 295/35-18 AVS Sport non-runflats - Src
47 lbs, front - 97-00 OEM magnesium w/OEM 245/45-17 runflats - Src
53 lbs, rear - 97-00 OEM magnesium w/OEM 275/40-18 runflats - Src
50 lbs, 17x8.5, 58mm offset, front - PWO w/OEM 245/45-17 runflats (1/2 tread) - Src
51 lbs - '06 C6Z GM Stock Wheel/Tire Combo, front - Src
56 lbs - '06 C6Z GM Stock Wheel/Tire Combo, rear - Src
C6 Suspension
Z51 rotors
Estimates based on information above and http://forums.corvetteforum.com/c6-t...e-with-c5.html
17 lb, 14 oz - front rotor
24 lb, 16 oz - rear rotor
Drivetrain
Clutch/Flywheel
23.3 lbs - O.E. iron flywheel - Src
44.8 lbs - O.E. flywheel/clutch assembly - Src
49 lbs - Z06 clutch/flywheel assembly - Src
42.8 lbs - Z06 stock - Src
36.7 lbs - Exedy Single Disk - Src
36.7 lbs - Exedy Dual Disk - Src
12.4 lbs - Fidanza flywheel - Src
33.9 lbs - Fidanza flywheel & SPEC clutch assembly - Src
14 lbs - Quartermaster 5.5" 3-disc clutch/flywheel/hardware - Src
115-129 lbs - T56 transmission, TUET1806 - Src
21 lbs - DTE A4 Differential Strut Kit, Stage I - Src
Motor & accessories
457.6 lbs, LS1 auto; 497.2 lbs, LS1/LS6 manual - LS1/LS6 dressed - Src
443 lbs - LS2 dressed - Src
~600 oz - LS1/LS6 connecting rods - Src
434 gm - LS1/LS6 piston - Src
76 gm, intake; 63 gm, exhaust - '02 LS6 valves - Src
99 gm, intake; 86 gm, exhaust - LS1 valves - Src
11.2 gm - LS1/LS6 retainer - Src
7.2 gm - Comp Ti retainer - Src
15 lbs - A.I.R. system & plumbing - Src
30 lbs - AC/condenser/lines/oil holder/brackets/pulleys - Src
10-3/4 oz - airbridge - Src
1 lb, 14 oz - radiator top cover with screws (x4) - Src
1 lb, 12 oz - fuel rail covers - Src
16 lbs - P1SC head unit - Src
14 lbs - A&A single intercooler - Src
8 oz -- Headlight relay
2.5 oz -- OEM air filter clip/band x2
6 oz -- Serpentine belt OEM
4.25 lbs -- OEM LS1 air filter assembly without any clamps of any sort
10.5 oz -- OEM LS1 air bridge
2.1 oz -- Timing belt cover
92.5 lbs - GEN III V8 (LS1) Aluminum block - GM Manual, JRP's SuperFAQ
210.4 lbs - GEN III V8 (LS1) Cast Gray Iron Block - GM Manual, JRP's SuperFAQ
18.9 lbs - GEN III V8 (LS1) Aluminum head - GM Manual, JRP's SuperFAQ
43.2 lbs - GEN III V8 (LS1) Iron head - GM Manual, JRP's SuperFAQ
13.45 lbs - LS1 water pump - Src
10.25 lbs - LS2 water pump - Src
15.5 oz - LS1 piston - Src
480 gm - LS7 titanium connecting rod - Src
~685 gm - LS2 connecting rod - Src
76 gm - LS7 intake valve (2.200) - Src
71 gm - LS7 exhaust valve (1.600) - Src
Quote:
The lightweight titanium valves weigh 21grams less than the stainless steel valves used in the LS2, despite the valve head having 22 percent more area.
- Src
Batteries
13 lbs - Odyssey/Dynabatt/Hawker racing battery - Src
13.5 lbs - Genesis G16EP, LWH=7.15x3.01x6.65, CC=280 - Src
15 lbs - PC 680, LWH=7.27x3.12x6.67, CC=280 - Src
23 lbs - SVR SVR28-12, LWH=6.88x6.50x4.88 - Src
23 lbs - Genesis G26EP, LWH=6.57x6.92x4.96, CC=470 - Src
26 lbs - Odyssey PC 925, LWH=6.69x7.05x5.04, CC=470 - Src
26 lbs - SVR SVR33-12, LWH=7.75x5.00x7.25, CC=500 - Src
26 lbs - Optima Yellow Top 51, LWH=9.25x5.00x9.00, CC=500 - Src
32.8 lbs - AC Delco 75P-7YR, LWH=9.50x7.10x7.30, CC=550 - Src
32.9 lbs - Genesis G42EP, LWH=7.78x6.53x6.72, CC=630 - Src
35.4 lbs - Odyssey PC 1200, LWH=7.87x6.66x7.55, CC=630 - Src
33.1 lbs - Optima Red Top 75/35, LWH=9.31x6.81x7.63, CC=650 - Src
37.7 lbs - AC Delco 34P-7YR, LWH=10.3x6.80x7.80, CC=650 - Src
36 lbs - Exide Select Orbital 75, LWH=9.00x7.00x7.44, CC=690 - Src
38.8 lbs - Optima Red Top 34/78, LWH=10.0x6.88x7.81, CC=750 - Src
38 lbs - Exide Select Orbital 78, LWH=10.1x7.00x8.1, CC=770 - Src
45.6 lbs - AC Delco 65P-7YR, LWH=11.9x7.50x7.60, CC=800 - Src
57 lbs - SVR SVR80-12, LWH=10.6x6.50x6.25, CC=800 - Src
58.7 lbs - Odyssey PC 1700, LWH=13.02x6.62x7.68, CC=930 - Src
Exhaust
Headers with H-pipe unless noted otherwise
68 lbs - 97 stock double wall manifolds & h-pipe - Src
72.5 lbs - 02 cast iron manifolds with pup cats & h-pipe - Src
46 lbs - GHL 1-3/4" headers w/3" collectors & 3" Random Tech cats and x-pipe - Src
52 or 61 lbs - FLP LT's w/cats - Src
49 lbs - Kooks LT's w/high-flow cats - Src
48.5 lbs - LGM Pro LT's w/high-flow cats - Src
45.4 lbs - QTP LT's w/high-flow cats - Src
50 lbs - Stainless Works w/cats - Src
63 lbs - SuperMAXX LT's w/high-flow cats - Src
Cat-back Exhaust
14 lbs per side - Z06 Ti - Src
13.5 lbs per side - Z06 Ti - Src
15-16 lbs per side - Z06 Ti - Src
17 lbs per side - Z06 Ti - Src
22 lbs per side - OEM steel - Src
24 lbs per side - OEM steel - Src
19 lbs - B&B PRT's - Src
19 lbs - Borla Stingers (2-tip) - Src
22 lbs - Borla Stingers (4-tip) - Src
Universal Components
12.0 lbs - Random Tech X-pipe - Src
5.8 lbs - Random Tech left cat - Src
5.7 lbs - Random Tech right cat - Src
2.5 lbs - Dynatech clamps (4) - Src
Body
9.0 lbs - Window glass (left) - Src
9.0 lbs - Window glass (right) - Src
36.09 lbs - C5 Windshield - Src
30.39 lbs - Z06 Windshield - Src, Src
3.0 lbs - Exterior rear view mirror (left) - Src
3.0 lbs - Exterior rear view mirror (right) - Src
6.2 lbs - Stock tunnel plate - Src
15.4 lbs - Elite Engineering 304 SS, 0.134" tunnel plate, uncoated - Src
9.4 lbs - Elite Engineering aluminum 1/4" tunnel plate, uncoated - Src
9.6 lbs - Elite Engineering aluminum 1/4" tunnel plate, coated - Src
14.6 lbs - Elite Engineering aluminum 3/8" tunnel plate, coated - Src
9.2 lbs - LAPD 1/4" 6061-T6 aluminum Tunnel Heat/Insulator/Chassis Re-Enforcement Plate, coated - Src, Src
12.2 lbs - LAPD 3.8" 6061-T6 aluminum Tunnel Heat/Insulator/Chassis Re-Enforcement Plate, coated - Src, Src
12.7 lbs - VNM 304 SS BackBone, coated - Src, Src
1/2 oz - part# 11515757, crashbar bolt - Src
1/4 oz - part# 10281493, crashbar nutsert (big) - Src
1/2 oz - part# 10281487, crashbar nutsert (small) (x4) - Src
1/2 oz - part# 10#11515638, radiator/bumper nut-speci (x4) - Src
1/2 oz - part# 11513568, radiator/bumper screws (x3) - Src
1 lb, 14 oz - US headlight with bulbs - Src
3 lbs - Euro headlight with bulb
1 oz - front spring to subframe bolt - Src
502 lbs - C5 frame - Src
30.4 lbs - C5 Hood & substrate (no light) - Src
20.5 lbs - CE Hood (with substrate & light??) - Src
31.1 lbs - C5/Z06 Hood (with substrate & light??) - Src
14 lbs - Motor City 100% carbon fiber hood - Src
24 lbs - Motor City 50% carbon fiber, 50% fiberglass hood - Src
5.26 lbs - Stock 63mm driveshaft, part #12564457 - Src, Src
4.56 lbs - LG carbon fiber driveshaft - Src, Src
4.5 oz - Headlight surround
5 oz - Air dam - right side
20.22 lbs - C6 transparent roof - Src
20.90 lbs - C6 painted roof - Src
21.86 lbs - C5 painted roof - Src
Interior
3.5 lbs - Driver side air bag - Src
8.5 lbs - Passenger air bag - Src
3.5 lbs - Driver side seatbelt - Src
4 lbs - Interior fan motor - Src
8 lbs - Front speakers - Src
18.0 lbs - HVAC (base under dash unit - Src
4.0 lbs - Blower motor (Heat/AC) - Src
2.0 lbs - HVAC plastic ducts - Src
4.0 lbs - Airbag/glove box aluminum support - Src
2.0 lbs - Aluminum center console support - Src
1.0 lbs - A/C control head - Src
2.0 lbs - Dash vent duct - Src
1.0 lbs - Knee bolster support (white foam) - Src
1.0 lbs - Bose radio amplifier box - Src
3.0 lbs - Radio, AM/FM/CD - Src
7.0 lbs - Door module, harness, regulator (left) - Src
7.0 lbs - Door module, harness, regulator (right) - Src
3.0 lbs - Glove box assembly - Src
3.0 lbs - Door speaker (left) - Src
3.0 lbs - Door speaker (right) - Src
3 lb, 8 oz - driver side seat belt and fasteners - Src
11 oz - cd changer pack, no cds - Src
6-1/2 oz - 12 cds - Src
2 lb, 2 oz - trunk side storage covers, both - Src
1 lb, 10 oz - passenger floormat - Src
2.5 oz - Right seat button surround part # 1027308
2.5 oz - Ashtray
3 oz - Driver's seat frame plastic bracket covers and front bolts
5 oz - Seat belt top bolt and covers
1.5 oz - Dashboard cigarette lighter male & female
Seats
Sparco - Src
I'm using the Sparco Evo 2 as the largest possible seat that can fit, so all the seats below should fit. 20.91"/531mm base, 23.66"/601mm shoulder
18.00 lbs - Sprint (steel tube)
15.00 lbs - Ultra (fiberglass)
16.50 lbs - Off Road (fiberglass)
18.50 lbs - All Road (fiberglass)
21.50 lbs - Pro 2000 (fiberglass)
13.00 lbs - Pro 2000 (carbon fiber)
18.50 lbs - Evo (fiberglass)
12.50 lbs - Evo (carbon fiber)
20.00 lbs - Evo 2 (fiberglass)
17.50 lbs - Pro WRC (fiberglass)
14.50 lbs - Pro WRC (carbon fiber)
18.00 lbs - Rev (fiberglass)
22.00 lbs - Corsa (fiberglass)
12.50 lbs - Corsa (carbon fiber)
25.00 lbs - Circuit (fiberglass)
15.00 lbs - Circuit S-light (carbon fiber)
14.00 lbs - S-light (carbon fiber)
17.00 lbs - Speed (steel tube)
44.00 lbs - Milano (steel tube)
40.00 lbs - Monza (steel tube)
40.00 lbs - Torino (steel tube)
48.00 lbs - Milano Presige (steel tube)
16.00 lbs - Roadster (fiberglass)
20.00 lbs - Fighter (fiberglass)
Cobra seats
I'm using the Sparco Evo 2 as the largest possible seat that can fit, so all the seats below should fit. 20.91"/531mm base, 23.66"/601mm shoulder
14.3 lbs - Aqua 4x4 (fiberglass)
17.6 lbs - Evolution (fiberglass)
14.1 lbs - Evolution Technology (carbon fiber)
14.3 lbs - Imola (fiberglass)
11.2 lbs - Imola Technology (carbon fiber)
15.4 lbs - Suzuka (fiberglass)
12.3 lbs - Suzuka Technology (carbon fiber)
19.8 lbs - Monaco (steel)
Other seats from Flying Miata site that aren't listed above
I'm using the Sparco Evo 2 as the largest possible seat that can fit, so all the seats below should fit. 20.91"/531mm base, 23.66"/601mm shoulder
12.00 lbs - Aerosport AS100
7.50 lbs - Aerosport AS100/CK
12.00 lbs - Aerosport AS100N
7.50 lbs - Aerosport AS100N/CK
16.00 lbs - Aerosport AS200
30.00 lbs - Corbeau A4
12.00 lbs - Corbeau Classic Bucket
21.00 lbs - Corbeau Classic II
16.00 lbs - Corbeau Forza
25.00 lbs - Corbeau GT7
12.00 lbs - Corbeau GTA Lo Back
10.50 lbs - Corbeau Monza
42.00 lbs - Koenig Bio-Med
32.00 lbs - Koenig CL200
32.00 lbs - Koenig CP200
30.00 lbs - Koenig CP700
28.00 lbs - Koenig CPK700
38.00 lbs - Koenig K370
38.00 lbs - Koenig K530
38.00 lbs - Koenig K4000
31.00 lbs - Koenig K5000
31.00 lbs - Koenig K5000G
36.00 lbs - Koenig Miata
32.00 lbs - Koenig RL200
12.00 lbs - Koenig RS1000
10.00 lbs - Koenig RS2000
10.00 lbs - Koenig RS3000
26.00 lbs - Koenig S50
30.00 lbs - Koenig S100
28.00 lbs - Koenig SP700
28.00 lbs - Koenig Speedster
12.60 lbs - Momo Start
16.90 lbs - Momo T-Frame
14.70 lbs - NEX Racing Seat
16.50 lbs - NEX Reclinable Racing Seat
13.20 lbs - OMP Champion
18.50 lbs - OMP Eco
15.00 lbs - OMP Evoluzione
24.30 lbs - OMP Rec
24.30 lbs - OMP Red
19.00 lbs - OMP San Remo
14.30 lbs - OMP Sport
19.80 lbs - OMP Strada
19.50 lbs - Procar by Scat, Race 1600 Series
16.50 lbs - Procar by Scat, Xtreme 1700 Series
14.30 lbs - RaceTech JetSprint
16.50 lbs - RaceTech ProSprint
18.70 lbs - RaceTech RAC 4009
13.20 lbs - RaceTech RAC 9000
14.30 lbs - RaceTech RAC 9009
9.90 lbs - Recaro SPA
12.10 lbs - SPA Racer
Fasteners -- no weights, just intentions to replace with Al or Ti
?? oz - Bolt, Rocker Arm Cover 202-12556430 M6x1.0x33.5 - Src
?? oz - Bolt, HDR Pt (Bolt, Eng Lift Brkt) 231-11516328 M10x1.5x30 - Src
?? oz - Stud, Ign Coil M6x1.0x40 239/240-12557539 - Src
?? oz - Bolt, Front/Rear Timing Cover M8x1.25x30 277/309-11515758 - Src
?? oz - Bolt, Flywhl M11x1.5x23.5 124-12553332 - Src
?? oz - Bolt, CLU Press Plt M10x1.5x25 174-12561465 - Src
?? oz - Bolt, HFH Dome Hd, Tq tube front to bellhousing M10x1.5x40 5-11516862 - Src
?? oz - Bolt, Front bumper impact bar skid plate to subframe, Hex M8x1.25x30, 9-11516594 - Src
?? oz - Screw, Radiator support, Hex M6x1x25, 2-11503982 - Src
?? oz - Screw, RD WA HD, 4.2x1.41x16, 13-11515498 - Src
?? oz - Bolt, Scr Rd, M4.2x1.4x30 8.38 OD, 15-20374961 - Src
?? oz - Bolt, Intake Manifold w/flat washer, M6x1.0x21.8, 13.6 OD, 11-12552344 - Src
?? oz - Bolt, Metric Hx Flg HD, Throttle Body, M6x1x30, 2-11514008 - Src
?? oz - Bolt/Screw Spring-to-subframe, M10x1.5x30x20THD, 22.3 OD, 39-11515798 - Src
?? oz - Bolt, W/WA Floor panel tunnel reinforcement, M6x1x25, 25-11514139 - Src
You can achieve substantial weight reduction with the following modifications, while still having a car that's very comfortable to drive. Most of these modifications will directly increase (and decrease in a few cases) the safety of the car, while safety is indirectly improved due to the better handling and limits of a lighter car. Fighter pilots say "speed is life". Acceleration, deceleration, and lateral acceleration are all forms of acceleration, and lighter cars accelerate better in each of these ways because the tires have less mass to control....thus a lighter car is a safer car. Lighter cars have better moments of inertia which allows them to turn in more easily and roll less. Lighter cars are also easier on the tires and gas.
All the stage weight estimates are typically wild butt guesses, but it makes it easy to see what is possible. The weight listings in the separate weight posting is MUCH more reliable.
Stage I: Streetable weight reduction mods
Non-popup headlights (~40 lbs)
Braking rotors with an aluminum hat, or titanium rotors (unproven on street cars) (~20-30 lbs)
Carbon fiber hood (~12 lbs)
Z06 (thinner) windshield and side windows (~5.7 lbs)
Non runflat tires (~20 lbs)
Slicks (~30 lbs)
Z06 wheels (~4 lbs est.)
Corsa titanium exhaust (~35 lbs)
Long tube headers (~20 lbs)
Halltech aluminum alternator & bracket (10 lbs)
Carbon fiber driveshaft (~2 lbs)
Newer torque tube
Less options [HUD, elec AC, Active Stability, seat/mirror/steering wheel memory, cd changer] (~50 lbs)
Less gasoline & wiper fluid (No wiper fluid=9lbs, 6 lbs for every gallon of gas in that 18 gallon tank....~81 lbs for autocrossing)
Remove
cargo net
targa top (~20 lbs)
BCM’s
C5 "appearance mods" - exhaust plates, doorsill covers, etc.
fuel rail covers
all loose change, CD's, golf clubs, misc. items, from center console, hatch area, and glove box
Replace
stock crank pulley with aluminum aftermarket pulley
steel dampener with aluminum dampener
stock targa top with lexan piece (coupes)
water pump with electric water pump
battery with smaller battery
non-stressed fasteners with aluminum or titanium fasteners
leaf springs with coil over shocks with titanium springs
steel shifter with aluminum shifter and delrin or titanium shift ****
Empty your pockets of extra change, PDA's, cell phones, keys, lead plates, or whatever other junk you lug around
Go on a diet =p
Stage II: Hardcore semi-streetable weight reduction mods
Aluminum flywheel (~10 lbs)
Lighter clutch like Exedy or Quartermaster (~10 lbs)
Racing buckets (40-50 lbs)
Off-road x-pipe (10 lbs)
Replace stock hood, fenders, doors, roof, hatch and bumpers with aftermarket carbon fiber pieces
Remove
Tire repair kit (Z06)
Floor mats
Fog lights
Stage III: Track only weight reduction mods
Racing steering wheel & delete both airbags (~30 lbs, but get a 4-6 point harness)
Use unpadded aluminum or carbon fiber steering wheel
Run open headers
Replace stock front and rear glass with polycarbonate “glass”
Rebuild motor with Al or Ti connecting rods, Ti valve spring retainers and pushrods
Port the heads
Replace valve covers with magnesium or carbon fiber parts
Strip entire car, acid wash chassis, put car back together.
Remore
Column locking hardware
Interior – passenger seat, carpets, speaker panels, head liner, dash, center console, glove box, door panels, sun visors, rear view mirror, insulation, etc.
A/C Compressor
A/C controls and ducting
AIR pump system
Factory radio, speakers, and/or CD changer, and unnecessary wiring
HUD projector
Windshield wiper fluid reservoir and pump
Windshield wipers and motors
Stock cat back
Power steering pump
Front sway bar (drag only)
ABS, TC, AH hardware and sensors (drag only)
Fender wells
Headlight assembly, turn signals, taillights and reflectors
Shave side mirrors
Torque tunnel cover
OEM seat belts
Parking brake
Side windows and motors
Power locks and power windows
Side impact beams
Casting flash from engine, then polish
Reducing unsprung weight—not all is streetable
Forged 1-piece wheels
Use 3-piece wheels by Jongbloed, Kodiak, CCW, BBS
Skinny front wheels (drag only)
Ti fasteners on 3-piece wheels (~1 lbs per wheel)
Lighter non-runflat tires, or even track only synthetic corded slicks
Lighter calipers
2-piece, unvented or titanium rotors
Titanium wheel studs
Aluminum or titanium lug nuts
Remove tire pressure sensors
Remove rubber valve stem cap
Balance the wheels without tires or balancing weights, and then mount tires
Great literature for hardcore techies
Helm’s Service Manual --- this should come with every Corvette IMHO
Key Design Developments of the 1997 Chevrolet Corvette (SAE SP-1282)
GM eSI Techline Service Manual
Nuts, Bolts and Fasteners and Plumbing Handbook, Carroll Smith
Drive to Win, Carroll Smith: The Essential Guide to Race Driving
Engineer to Win: The Essential Guide to Racing Car Materials Technology or How to Build Winners Which Don’t Break, Carroll Smith
Tune to Win, Carroll Smith
Fiberglass & Composite Materials: An Enthusiast’s Guide to High Performance Non-Metallic Materials for Automotive Racing and Marine Use
How to Make Your Car Handle, Fred Puhn
Race Car Vehicle Dynamics (SAE R146)
Racing & High Performance Tire: Using Tires to Tune for Grip and Balance (SAE R351)
Physics of Racing
--------------------------------------------------------------------------------
Last edited by leaftye; 12-22-2005 at 10:35 PM. Reason: Only took a year between updates!
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12-24-2004, 05:47 PM #2
leaftye
CF Senior Member
My Corvette Photos
Member Since: Nov 2003
Location: San Diego, CA "leaf" "tee" "e"
Component (OEM & aftermarket) weights
--------------------------------------------------------------------------------
C5 Suspension
Swaybars
18.5 lbs - T1 front anti-swaybar w/OEM adjustable endlinks & bushings - Src
8.5 oz - T1 OEM adjustable endlink - Src
3 oz - T1 OEM (endlink) bolt, nut and spacers - Src
5 oz - T1 OEM rear bushings (2) - Src
4.1 lbs - Z51 rear anti-swaybar w/OEM bushings - Src
3.6 lbs - Z51 rear anti-swaybar - Src
4.5 oz - Z51 rear OEM bushings (2) - Src
18.5 oz - Z51 OEM endlinks (2) - Src
9.5 oz - QA-1 endlinks - Src
6.5 oz - Lowe's 1/2" hole, 1.5 mm (avg) thick, 2" diameter (8) - Src
4 oz - Lowe's 1/2" hole, 2.25 mm (avg) thick, 3.5 cm diameter (8) - Src
Rotors
4.8 lbs - ZMI titanium ---Src
14 lb - rear left brake rotor from Napa, made in Canada, part# 86702 - Src
14 lb, 4 oz - rear right brake rotor from Napa, made in Canada, part# 86703 - Src
18 lb, 14 oz - front right brake rotor from Napa, made in USA, part# 86700 - Src
18 lb, 10 oz - front left brake rotor from Napa, made in Canada, part# 86701 - Src
Calipers
5.8 lbs - ZMI - Src
1/2 oz - single Speedbleeder - Src
Pads
1 lb, 2 oz - PFC Z-rated brake pads, single side, rear, without shim - Src
1/2 oz - PFC brake pad rear shim, single side - Src
2 lb, 5 oz - PFC Z-rated brake pads, single side, front, without shims - Src
3 oz - PFC brake pad front shims (2), single side - Src
Wheels
19.2 lbs, front; 21.4 lbs, rear - 97-99 OEM wagon - Src
22 lbs, front; 29 lbs, rear - 97-99 OEM wagon - Src
17 lbs, front; 19.5 lbs rear - 97-00 OEM magnesium - Src
17.5 lbs, front; 19.5 lbs, rear - 97-00 OEM magnesium - Src
18.08 lbs, front; 20.06 rear - 00 OEM standard, thin spoke, high polish - Src
17 lbs, front; 20 lbs, rear - 00 OEM standard, thin spoke, painted, no sensors or centercaps - Src
16 lbs, front; 20 lbs, rear - 01 OEM standard high polish - Src
19.6 lbs, front; 21.4 lbs, rear - 01 Z06 forged - Src
19.2 lbs, front; 21 lbs, rear - 02-04 Z06 cast/spun - Src, Src
24 lbs, 18x10.5 - 00+ repro high polish - Src
28 lbs, front; 32 lbs, rear - Z06 chrome repro - Src
23 lbs, front; 26 lbs, rear - Z06 chrome repro - Src
23.5 lbs, front; 24.5 lbs, rear - Z06 Motorsports, polished - Src
20 lbs, 17x8.5, 58mm offset, front; 23 lbs, 18x9.5, 65mm offset, rear - PWO - Src
22 lbs, 18x10.5, 58mm offset, front - HRE 545 w/clear center - Src
27 lbs, 18x12, 74mm offset, rear - HRE 545 w/clear center - Src
24/25 lbs - Z07 wheel weight, front - Src
28 lbs - Z07 wheel weight, rear - Src
Lugnuts
1.5 oz - OEM open lugnut - Src
Tires
NOTE: Kumho tires are not currently differentiated between runflat and nonrunflat tires.
29.5 lbs, front; 32.5 lbs, rear - Goodyear EMT, stock size - Src
27 lbs, front; 33 lbs, rear - Bridgestone S03's, stock size - Src
26.4 lbs - Goodyear GS-C 275/40R17 - Src
12 lbs, 275/40x17; 15 lbs, 315/35x17; 16 lbs, 305/30x18 - Hoosier A3S03 - Src
28 lbs, 275/40x17=28lbs; 30.5 lbs, 315/35x17 - Goodyear ZR "S" Rains - Src
25 lbs, 275/40x17; 28 lbs, 315/35x17 (shaved to 6/32") - Goodyear GS CS - Src
23lbs, 265/40x17; 24.5 lbs, 275/40x18; 25.5 lbs, 295/35x18 - Goodyear F1 GS CS - Src
27 lbs, 265/40R18; 28 lbs, 315/40R18 - Goodyear GS F1 SC - Src
25 lbs, 255/40R17 - Bridgestone Potenza S02 - Src
27 lbs, 275/40R18 - Bridgestone Potenza S02 - Src
29 lbs, 285/30R18 - Bridgestone Potenza S02 - Src
30 lbs, 285/30R18 - Bridgestone Potenza S02 - Src
30 lbs, 295/30R18 - Bridgestone Potenza S02 - Src
29 lbs, 295/35R18 - Bridgestone Potenza S02 - Src
28 lbs, 245/45R17 - Kumho Ecsta 711 - Src
29 lbs, 245/45R17 - Kumho Ecsta Supra - Src
32 lbs, 245/45R17 - Kumho Ecsta MX - Src
26 lbs, 245/45R17 - Kumho Ecsta Victoracer V700 - Src
30 lbs, 265/40R17 - Kumho Ecsta Supra - Src
20 lbs, 275/40R17 - Kumho Ecsta MX - Src
36 lbs, 275/40R17 - Kumho Ecsta MX - Src
25 lbs, 285/30R18 - Kumho Ecsta V700 - Src
TBD lbs, 295/35R18 - Kumho Ecsta ASX - Src
30 lbs, 295/35R18 - Kumho Ecsta Supra - Src
20 lbs, 275/35R18 - Kumho Ecsta MX - Src
31 lbs, 295/35R18 - Kumho Ecsta MX - Src
26 lbs, 305/30R18 - Kumho Ecsta V700 - Src
28 lbs, 315/35R18 - Kumho Ecsta V710 - Src
30 lbs, 335/30R18 - Kumho Ecsta V700 - Src
Tire Rack
Kumho ECSTA ASX Specs
245/45WR17 27 lbs
275/40WR18 30 lbs
UTQG: 420 AA A
Avon Tech M550 A/S Specs
245/45WR17 29 lbs
275/40WR18 34 lbs
UTQG: 360 AA A
Avon Tech M500 Specs
245/45WR17 28 lbs
275/40WR18 32 lbs
UTQG: 280 AA A
Continental ContiExtremeContact Specs
245/45WR17 24 lbs
275/40WR18 25 lbs
UTQG: 400 AA A
Kumho ECSTA MX Specs
245/45YR17 25 lbs
275/40YR18 29 lbs
UTQG: 220 AA A
Pirelli PZero Nero M&S Specs
245/45WR17 24 lbs
275/40WR18 29 lbs
UTQG: 400 AA A (front), 400 A A (rear)
BFGoodrich g-Force T/A KDW Specs
245/45YR17 28 lbs
275/40YR18 32 lbs
UTQG: 300 AA A
Goodyear Eagle F1 GS Specs
245/45YR17 25 lbs
275/40YR18 28 lbs
UTQG: 300 AA A
Kumho ECSTA MX (runflat) Specs
245/45YR17 32 lbs
275/40YR18 35 lbs
UTQG: 220 AA A
Continental ContiSportContact 2 Specs
245/45YR17 25 lbs
275/40YR18 26 lbs
UTQG: 280 AA A
Dunlop SP Sport 9000 Specs
245/45WR17 26 lbs
275/40WR18 29 lbs
UTQG: 280 A A
BFGoodrich g-Force T/A KD Specs
245/45YR17 27 lbs
275/40YR18 31 lbs
UTQG: 200 AA A
Goodyear Eagle F1 GS-D3 Specs
245/45YR17 25 lbs
275/40YR18 28 lbs
UTQG: 280 AA A
Michelin Pilot XGT Z4 Specs
245/45WR17 26 lbs
275/40WR18 30 lbs
UTQG: 300 A A
Bridgestone Potenza RE050 Specs
245/45WR17 26 lbs
275/40YR18 28 lbs
UTQG: 140 A A
Bridgestone Potenza S-03 Pole Position Specs
245/45YR17 28 lbs
275/40YR18 34 lbs
UTQG: 220 AA A
Goodyear Eagle F1 Supercar Specs
245/45YR17 24 lbs
275/40YR18 27 lbs
UTQG: 220 AA A
Wheel & Tire combined weight
45 lbs, front - 97-00 OEM magnesium w/Nitto 275/40-17 (1/2 tread) - Src
50 lbs, rear - 97-00 OEM magnesium w/Yoko 295/35-18 AVS Sport non-runflats - Src
47 lbs, front - 97-00 OEM magnesium w/OEM 245/45-17 runflats - Src
53 lbs, rear - 97-00 OEM magnesium w/OEM 275/40-18 runflats - Src
50 lbs, 17x8.5, 58mm offset, front - PWO w/OEM 245/45-17 runflats (1/2 tread) - Src
51 lbs - '06 C6Z GM Stock Wheel/Tire Combo, front - Src
56 lbs - '06 C6Z GM Stock Wheel/Tire Combo, rear - Src
C6 Suspension
Z51 rotors
Estimates based on information above and http://forums.corvetteforum.com/c6-t...e-with-c5.html
17 lb, 14 oz - front rotor
24 lb, 16 oz - rear rotor
Drivetrain
Clutch/Flywheel
23.3 lbs - O.E. iron flywheel - Src
44.8 lbs - O.E. flywheel/clutch assembly - Src
49 lbs - Z06 clutch/flywheel assembly - Src
42.8 lbs - Z06 stock - Src
36.7 lbs - Exedy Single Disk - Src
36.7 lbs - Exedy Dual Disk - Src
12.4 lbs - Fidanza flywheel - Src
33.9 lbs - Fidanza flywheel & SPEC clutch assembly - Src
14 lbs - Quartermaster 5.5" 3-disc clutch/flywheel/hardware - Src
115-129 lbs - T56 transmission, TUET1806 - Src
21 lbs - DTE A4 Differential Strut Kit, Stage I - Src
Motor & accessories
457.6 lbs, LS1 auto; 497.2 lbs, LS1/LS6 manual - LS1/LS6 dressed - Src
443 lbs - LS2 dressed - Src
~600 oz - LS1/LS6 connecting rods - Src
434 gm - LS1/LS6 piston - Src
76 gm, intake; 63 gm, exhaust - '02 LS6 valves - Src
99 gm, intake; 86 gm, exhaust - LS1 valves - Src
11.2 gm - LS1/LS6 retainer - Src
7.2 gm - Comp Ti retainer - Src
15 lbs - A.I.R. system & plumbing - Src
30 lbs - AC/condenser/lines/oil holder/brackets/pulleys - Src
10-3/4 oz - airbridge - Src
1 lb, 14 oz - radiator top cover with screws (x4) - Src
1 lb, 12 oz - fuel rail covers - Src
16 lbs - P1SC head unit - Src
14 lbs - A&A single intercooler - Src
8 oz -- Headlight relay
2.5 oz -- OEM air filter clip/band x2
6 oz -- Serpentine belt OEM
4.25 lbs -- OEM LS1 air filter assembly without any clamps of any sort
10.5 oz -- OEM LS1 air bridge
2.1 oz -- Timing belt cover
92.5 lbs - GEN III V8 (LS1) Aluminum block - GM Manual, JRP's SuperFAQ
210.4 lbs - GEN III V8 (LS1) Cast Gray Iron Block - GM Manual, JRP's SuperFAQ
18.9 lbs - GEN III V8 (LS1) Aluminum head - GM Manual, JRP's SuperFAQ
43.2 lbs - GEN III V8 (LS1) Iron head - GM Manual, JRP's SuperFAQ
13.45 lbs - LS1 water pump - Src
10.25 lbs - LS2 water pump - Src
15.5 oz - LS1 piston - Src
480 gm - LS7 titanium connecting rod - Src
~685 gm - LS2 connecting rod - Src
76 gm - LS7 intake valve (2.200) - Src
71 gm - LS7 exhaust valve (1.600) - Src
Quote:
The lightweight titanium valves weigh 21grams less than the stainless steel valves used in the LS2, despite the valve head having 22 percent more area.
- Src
Batteries
13 lbs - Odyssey/Dynabatt/Hawker racing battery - Src
13.5 lbs - Genesis G16EP, LWH=7.15x3.01x6.65, CC=280 - Src
15 lbs - PC 680, LWH=7.27x3.12x6.67, CC=280 - Src
23 lbs - SVR SVR28-12, LWH=6.88x6.50x4.88 - Src
23 lbs - Genesis G26EP, LWH=6.57x6.92x4.96, CC=470 - Src
26 lbs - Odyssey PC 925, LWH=6.69x7.05x5.04, CC=470 - Src
26 lbs - SVR SVR33-12, LWH=7.75x5.00x7.25, CC=500 - Src
26 lbs - Optima Yellow Top 51, LWH=9.25x5.00x9.00, CC=500 - Src
32.8 lbs - AC Delco 75P-7YR, LWH=9.50x7.10x7.30, CC=550 - Src
32.9 lbs - Genesis G42EP, LWH=7.78x6.53x6.72, CC=630 - Src
35.4 lbs - Odyssey PC 1200, LWH=7.87x6.66x7.55, CC=630 - Src
33.1 lbs - Optima Red Top 75/35, LWH=9.31x6.81x7.63, CC=650 - Src
37.7 lbs - AC Delco 34P-7YR, LWH=10.3x6.80x7.80, CC=650 - Src
36 lbs - Exide Select Orbital 75, LWH=9.00x7.00x7.44, CC=690 - Src
38.8 lbs - Optima Red Top 34/78, LWH=10.0x6.88x7.81, CC=750 - Src
38 lbs - Exide Select Orbital 78, LWH=10.1x7.00x8.1, CC=770 - Src
45.6 lbs - AC Delco 65P-7YR, LWH=11.9x7.50x7.60, CC=800 - Src
57 lbs - SVR SVR80-12, LWH=10.6x6.50x6.25, CC=800 - Src
58.7 lbs - Odyssey PC 1700, LWH=13.02x6.62x7.68, CC=930 - Src
Exhaust
Headers with H-pipe unless noted otherwise
68 lbs - 97 stock double wall manifolds & h-pipe - Src
72.5 lbs - 02 cast iron manifolds with pup cats & h-pipe - Src
46 lbs - GHL 1-3/4" headers w/3" collectors & 3" Random Tech cats and x-pipe - Src
52 or 61 lbs - FLP LT's w/cats - Src
49 lbs - Kooks LT's w/high-flow cats - Src
48.5 lbs - LGM Pro LT's w/high-flow cats - Src
45.4 lbs - QTP LT's w/high-flow cats - Src
50 lbs - Stainless Works w/cats - Src
63 lbs - SuperMAXX LT's w/high-flow cats - Src
Cat-back Exhaust
14 lbs per side - Z06 Ti - Src
13.5 lbs per side - Z06 Ti - Src
15-16 lbs per side - Z06 Ti - Src
17 lbs per side - Z06 Ti - Src
22 lbs per side - OEM steel - Src
24 lbs per side - OEM steel - Src
19 lbs - B&B PRT's - Src
19 lbs - Borla Stingers (2-tip) - Src
22 lbs - Borla Stingers (4-tip) - Src
Universal Components
12.0 lbs - Random Tech X-pipe - Src
5.8 lbs - Random Tech left cat - Src
5.7 lbs - Random Tech right cat - Src
2.5 lbs - Dynatech clamps (4) - Src
Body
9.0 lbs - Window glass (left) - Src
9.0 lbs - Window glass (right) - Src
36.09 lbs - C5 Windshield - Src
30.39 lbs - Z06 Windshield - Src, Src
3.0 lbs - Exterior rear view mirror (left) - Src
3.0 lbs - Exterior rear view mirror (right) - Src
6.2 lbs - Stock tunnel plate - Src
15.4 lbs - Elite Engineering 304 SS, 0.134" tunnel plate, uncoated - Src
9.4 lbs - Elite Engineering aluminum 1/4" tunnel plate, uncoated - Src
9.6 lbs - Elite Engineering aluminum 1/4" tunnel plate, coated - Src
14.6 lbs - Elite Engineering aluminum 3/8" tunnel plate, coated - Src
9.2 lbs - LAPD 1/4" 6061-T6 aluminum Tunnel Heat/Insulator/Chassis Re-Enforcement Plate, coated - Src, Src
12.2 lbs - LAPD 3.8" 6061-T6 aluminum Tunnel Heat/Insulator/Chassis Re-Enforcement Plate, coated - Src, Src
12.7 lbs - VNM 304 SS BackBone, coated - Src, Src
1/2 oz - part# 11515757, crashbar bolt - Src
1/4 oz - part# 10281493, crashbar nutsert (big) - Src
1/2 oz - part# 10281487, crashbar nutsert (small) (x4) - Src
1/2 oz - part# 10#11515638, radiator/bumper nut-speci (x4) - Src
1/2 oz - part# 11513568, radiator/bumper screws (x3) - Src
1 lb, 14 oz - US headlight with bulbs - Src
3 lbs - Euro headlight with bulb
1 oz - front spring to subframe bolt - Src
502 lbs - C5 frame - Src
30.4 lbs - C5 Hood & substrate (no light) - Src
20.5 lbs - CE Hood (with substrate & light??) - Src
31.1 lbs - C5/Z06 Hood (with substrate & light??) - Src
14 lbs - Motor City 100% carbon fiber hood - Src
24 lbs - Motor City 50% carbon fiber, 50% fiberglass hood - Src
5.26 lbs - Stock 63mm driveshaft, part #12564457 - Src, Src
4.56 lbs - LG carbon fiber driveshaft - Src, Src
4.5 oz - Headlight surround
5 oz - Air dam - right side
20.22 lbs - C6 transparent roof - Src
20.90 lbs - C6 painted roof - Src
21.86 lbs - C5 painted roof - Src
Interior
3.5 lbs - Driver side air bag - Src
8.5 lbs - Passenger air bag - Src
3.5 lbs - Driver side seatbelt - Src
4 lbs - Interior fan motor - Src
8 lbs - Front speakers - Src
18.0 lbs - HVAC (base under dash unit - Src
4.0 lbs - Blower motor (Heat/AC) - Src
2.0 lbs - HVAC plastic ducts - Src
4.0 lbs - Airbag/glove box aluminum support - Src
2.0 lbs - Aluminum center console support - Src
1.0 lbs - A/C control head - Src
2.0 lbs - Dash vent duct - Src
1.0 lbs - Knee bolster support (white foam) - Src
1.0 lbs - Bose radio amplifier box - Src
3.0 lbs - Radio, AM/FM/CD - Src
7.0 lbs - Door module, harness, regulator (left) - Src
7.0 lbs - Door module, harness, regulator (right) - Src
3.0 lbs - Glove box assembly - Src
3.0 lbs - Door speaker (left) - Src
3.0 lbs - Door speaker (right) - Src
3 lb, 8 oz - driver side seat belt and fasteners - Src
11 oz - cd changer pack, no cds - Src
6-1/2 oz - 12 cds - Src
2 lb, 2 oz - trunk side storage covers, both - Src
1 lb, 10 oz - passenger floormat - Src
2.5 oz - Right seat button surround part # 1027308
2.5 oz - Ashtray
3 oz - Driver's seat frame plastic bracket covers and front bolts
5 oz - Seat belt top bolt and covers
1.5 oz - Dashboard cigarette lighter male & female
Seats
Sparco - Src
I'm using the Sparco Evo 2 as the largest possible seat that can fit, so all the seats below should fit. 20.91"/531mm base, 23.66"/601mm shoulder
18.00 lbs - Sprint (steel tube)
15.00 lbs - Ultra (fiberglass)
16.50 lbs - Off Road (fiberglass)
18.50 lbs - All Road (fiberglass)
21.50 lbs - Pro 2000 (fiberglass)
13.00 lbs - Pro 2000 (carbon fiber)
18.50 lbs - Evo (fiberglass)
12.50 lbs - Evo (carbon fiber)
20.00 lbs - Evo 2 (fiberglass)
17.50 lbs - Pro WRC (fiberglass)
14.50 lbs - Pro WRC (carbon fiber)
18.00 lbs - Rev (fiberglass)
22.00 lbs - Corsa (fiberglass)
12.50 lbs - Corsa (carbon fiber)
25.00 lbs - Circuit (fiberglass)
15.00 lbs - Circuit S-light (carbon fiber)
14.00 lbs - S-light (carbon fiber)
17.00 lbs - Speed (steel tube)
44.00 lbs - Milano (steel tube)
40.00 lbs - Monza (steel tube)
40.00 lbs - Torino (steel tube)
48.00 lbs - Milano Presige (steel tube)
16.00 lbs - Roadster (fiberglass)
20.00 lbs - Fighter (fiberglass)
Cobra seats
I'm using the Sparco Evo 2 as the largest possible seat that can fit, so all the seats below should fit. 20.91"/531mm base, 23.66"/601mm shoulder
14.3 lbs - Aqua 4x4 (fiberglass)
17.6 lbs - Evolution (fiberglass)
14.1 lbs - Evolution Technology (carbon fiber)
14.3 lbs - Imola (fiberglass)
11.2 lbs - Imola Technology (carbon fiber)
15.4 lbs - Suzuka (fiberglass)
12.3 lbs - Suzuka Technology (carbon fiber)
19.8 lbs - Monaco (steel)
Other seats from Flying Miata site that aren't listed above
I'm using the Sparco Evo 2 as the largest possible seat that can fit, so all the seats below should fit. 20.91"/531mm base, 23.66"/601mm shoulder
12.00 lbs - Aerosport AS100
7.50 lbs - Aerosport AS100/CK
12.00 lbs - Aerosport AS100N
7.50 lbs - Aerosport AS100N/CK
16.00 lbs - Aerosport AS200
30.00 lbs - Corbeau A4
12.00 lbs - Corbeau Classic Bucket
21.00 lbs - Corbeau Classic II
16.00 lbs - Corbeau Forza
25.00 lbs - Corbeau GT7
12.00 lbs - Corbeau GTA Lo Back
10.50 lbs - Corbeau Monza
42.00 lbs - Koenig Bio-Med
32.00 lbs - Koenig CL200
32.00 lbs - Koenig CP200
30.00 lbs - Koenig CP700
28.00 lbs - Koenig CPK700
38.00 lbs - Koenig K370
38.00 lbs - Koenig K530
38.00 lbs - Koenig K4000
31.00 lbs - Koenig K5000
31.00 lbs - Koenig K5000G
36.00 lbs - Koenig Miata
32.00 lbs - Koenig RL200
12.00 lbs - Koenig RS1000
10.00 lbs - Koenig RS2000
10.00 lbs - Koenig RS3000
26.00 lbs - Koenig S50
30.00 lbs - Koenig S100
28.00 lbs - Koenig SP700
28.00 lbs - Koenig Speedster
12.60 lbs - Momo Start
16.90 lbs - Momo T-Frame
14.70 lbs - NEX Racing Seat
16.50 lbs - NEX Reclinable Racing Seat
13.20 lbs - OMP Champion
18.50 lbs - OMP Eco
15.00 lbs - OMP Evoluzione
24.30 lbs - OMP Rec
24.30 lbs - OMP Red
19.00 lbs - OMP San Remo
14.30 lbs - OMP Sport
19.80 lbs - OMP Strada
19.50 lbs - Procar by Scat, Race 1600 Series
16.50 lbs - Procar by Scat, Xtreme 1700 Series
14.30 lbs - RaceTech JetSprint
16.50 lbs - RaceTech ProSprint
18.70 lbs - RaceTech RAC 4009
13.20 lbs - RaceTech RAC 9000
14.30 lbs - RaceTech RAC 9009
9.90 lbs - Recaro SPA
12.10 lbs - SPA Racer
Fasteners -- no weights, just intentions to replace with Al or Ti
?? oz - Bolt, Rocker Arm Cover 202-12556430 M6x1.0x33.5 - Src
?? oz - Bolt, HDR Pt (Bolt, Eng Lift Brkt) 231-11516328 M10x1.5x30 - Src
?? oz - Stud, Ign Coil M6x1.0x40 239/240-12557539 - Src
?? oz - Bolt, Front/Rear Timing Cover M8x1.25x30 277/309-11515758 - Src
?? oz - Bolt, Flywhl M11x1.5x23.5 124-12553332 - Src
?? oz - Bolt, CLU Press Plt M10x1.5x25 174-12561465 - Src
?? oz - Bolt, HFH Dome Hd, Tq tube front to bellhousing M10x1.5x40 5-11516862 - Src
?? oz - Bolt, Front bumper impact bar skid plate to subframe, Hex M8x1.25x30, 9-11516594 - Src
?? oz - Screw, Radiator support, Hex M6x1x25, 2-11503982 - Src
?? oz - Screw, RD WA HD, 4.2x1.41x16, 13-11515498 - Src
?? oz - Bolt, Scr Rd, M4.2x1.4x30 8.38 OD, 15-20374961 - Src
?? oz - Bolt, Intake Manifold w/flat washer, M6x1.0x21.8, 13.6 OD, 11-12552344 - Src
?? oz - Bolt, Metric Hx Flg HD, Throttle Body, M6x1x30, 2-11514008 - Src
?? oz - Bolt/Screw Spring-to-subframe, M10x1.5x30x20THD, 22.3 OD, 39-11515798 - Src
?? oz - Bolt, W/WA Floor panel tunnel reinforcement, M6x1x25, 25-11514139 - Src
Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
No matter what rear spoiler or front splitter you get DO NOT USE double sided sticky tape. Use Screws.
I have seen a ACI front spilter come off at 125+ mph, guy drove right over it, tossed it up in the air. Good thing I was 50 yards behind so I could see where that damn airborn object was going.
same with rear spoilers, screw them on. tape is not enough.
Race Director
Joined: Jun 2003
Posts: 14,051
Likes: 9
From: Houston TX
As Tom points out, don't believe that weight reduction is either cheap or easy.
It is not.
You need to gut a C5/C6 to get appreciable weight savings if you are also going to add some other go fast "goodies" at the same time.
I decided to not gut my car interior until I put in a full cage, and then I will hope to retain the same weight - its a game of give and take.
I wanted bigger brakes, so I had to go 2 piece to get the rotor diameter and not add weight *chaching*
I needed downforce so on went the overlay splitter, and on went the CF hood to offset the weight *chaching*
I wanted bigger rubber all round, so now needed bigger wheels, but they had to be light weight CCW's *chaching*
I needed better seats... in go race seats - a little weight savings *chaching*
Off came the stock suspension on went a lighter one
*chaching*
In went the HP mods, headers, lighter flywheel (offset little by the added coolersa nd extra fluid) etc etc etc.
All that I went from stock 3070lbs 1/2 tank fuel and no driver, to 2995lbs 1/2 tank fuel and no driver.
What a huge effort for a net loss of only 75lbs
Bah, I just gave up as the next major step will need to be doors/windows/dash so I am now just focusing on slight car tweaks here and there and working on the major driver tweaks from now on
Paul
It is not.
You need to gut a C5/C6 to get appreciable weight savings if you are also going to add some other go fast "goodies" at the same time.
I decided to not gut my car interior until I put in a full cage, and then I will hope to retain the same weight - its a game of give and take.
I wanted bigger brakes, so I had to go 2 piece to get the rotor diameter and not add weight *chaching*
I needed downforce so on went the overlay splitter, and on went the CF hood to offset the weight *chaching*
I wanted bigger rubber all round, so now needed bigger wheels, but they had to be light weight CCW's *chaching*
I needed better seats... in go race seats - a little weight savings *chaching*
Off came the stock suspension on went a lighter one
*chaching*In went the HP mods, headers, lighter flywheel (offset little by the added coolersa nd extra fluid) etc etc etc.
All that I went from stock 3070lbs 1/2 tank fuel and no driver, to 2995lbs 1/2 tank fuel and no driver.
What a huge effort for a net loss of only 75lbs
Bah, I just gave up as the next major step will need to be doors/windows/dash so I am now just focusing on slight car tweaks here and there and working on the major driver tweaks from now on
Paul
Last edited by RC45; Mar 28, 2009 at 06:22 PM.
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Team Owner
Joined: Sep 2003
Posts: 43,084
Likes: 33
From: Raleigh / Rolesville NC
When adding lightness - prepare for extreme lighting of the wallet.
Now that said, getting down to 3000 lbs is not that bad. going under takes some doing
However, when going that light, there is a 200 lb addition you will need, a ROLL CAGE
It is not uncommon to get a C5 with driver, roll cage and some fuel to the 3050-3150 range without too much pocket strain.
I would rather be at 3150 +/- with driver and have a roll cage and fire suppression system and run about 550-560 rwhp. then 2900 with 600 rwhp and no cage.
But hey that is me. I am a bit
anyway
Now that said, getting down to 3000 lbs is not that bad. going under takes some doing
However, when going that light, there is a 200 lb addition you will need, a ROLL CAGE
It is not uncommon to get a C5 with driver, roll cage and some fuel to the 3050-3150 range without too much pocket strain.
I would rather be at 3150 +/- with driver and have a roll cage and fire suppression system and run about 550-560 rwhp. then 2900 with 600 rwhp and no cage.
But hey that is me. I am a bit
anyway
Race Director
Joined: Jun 2003
Posts: 14,051
Likes: 9
From: Houston TX
^^ Exactly right -- and now that I am at the rollcage stage, I guess out comes the A/C and access and interior and side windows.
So if after all is said and done including cage etc, I can be back at my 2002 stock weight of 3070lbs I will be satisfied.
So if after all is said and done including cage etc, I can be back at my 2002 stock weight of 3070lbs I will be satisfied.
