varkwso

I am looking for a brakedown of OE spring rates/bar sizes on C5s from 1997-2004 for base models, Z51 and ZO6. I know they varied over the production run.

Any reference/info greatly appreciated.

Thanks

Last C5

C5 SWAY BAR COMPARISON
Bars Front Dia. Rear Dia. Thickness


Base / FE1 23 mm 19.1 mm

Z51 / FE3 - '97-'99 25.4 mm 21.7 mm

Z51 / FE3 - '00-'04 28.6 mm 23.6 mm
note rear same as Z06 rear, and both updated from earlier Z51 bars.

Z06 / FE4 30.0 mm 23.6 mm
Fantastic for good street driving, and good for autocrossing.

ADDCO/BMR 31? mm 21? mm

Hotchkis 31.75 mm 25.4 mm

Don't know the spring rates. Sorry.

Jim 47

Here are some accumulated data from over the years for model years 00to 2004:

Bars in mm
Suspension type Front thickness-- Rear thickness

Base 23.1 3.81 19.1 2.0

FE-3 28.6 4.15 23.6 3.0

FE-4 (Z06) 30.0 4.5 23.6 3.5

T-1 38.4 6.35 27.5 6.35

Spring rates have been reported all over the map, but this is what I have:

Base 440 577

FE-3 525 634

FE-4 (Z06) 525 714

T-1 approx 700 900

These are the rates of the springs, NOT the effective rate at the wheel. Some people have exhibited doubt that the rear Vette springs are higher rates than the front springs, but this is the way it is because of the geometery of the suspension design.

I hope this is helpful

Jim

varkwso

This is all really useful - data does seem to be all over the map...

looking for some takeoff base model sways and springs...

I "heard" but have not seen a car with it yet, or any production proof, that the base late 2003 and 2004 came with the same size bars as 97-99 Z51.

gkmccready

All second hand info, mostly collected from the forums here.

Swaybars:

• C5 Base Suspension: 23 mm-front / 19.1 mm-rear / 3.81mm/2.0mm thickness
• C5 Z51 (97-99): 25.4 mm-front / 21.7 mm-rear
• C5 Z51 (00-04): 28.6 mm-front / 23.6 mm-rear / 4.15mm/3mm thickness
• C5 Z06: 30.0 mm-front / 23.6 mm-rear / 4.5mm/3.5mm thickness
• C6 Base: ?? mm-front / 22.0 mm (7/8")-rear
• C6 Z51: 31 mm-front / 25.4 mm (1")-rear
• C6 Z06: 31 mm-front / 28.8 mm-rear
• C5 Hotchkis: 31.75 mm-front / 25.4 mm-rear / 4mm/4mm thickness
• C5/C6 Addco: 32 mm-front / 25.4 mm-rear
• C5/C6 Addco: 35 mm-front / 25.4 mm-rear
• C5 Pfadt (Adjustables): 32 mm-front / 26 mm-rear http://www.pfadtracing.com/
• C5 Pfadt (Adjustables): 35 mm-front / 28.5 mm-rear (Pfatty)
• C5 T1 (GM Racing): 38.4 mm-front / 27.5 mm-rear / 6.35/6.35 thickness
• C6 T1 (GM Racing): 38.4 mm-front / 27.5 mm-rear / 6mm/?? thick

Springs:

• C5 Z06: 526# Front, 714# Rear
• C6 Z06: 531# Front, 782# Rear
• C6 Z51: 526# Front, 645# Rear
• T1 (C6): 582# Front, 850# Rear
• C6 Base: 420# Front, 657# Rear (VBP: 400-420 F / 600-620 R)
• T1 (C5): 582# Front, 793# Rear
• Pfadt Coil-overs: 425# Front, 575# Rear (Remember: Wheel rates!)
• Hyperco HPS (Street): 565# Front (12405HPS), #765 Rear (12406HPS)
• Hyperco HPT (Track/Solo): 625# Front (12407HPT), #850 Rear (12408HPT)
• VBP Sport 990# Front, 650# Rear
• VBP Extreme 1050# Front, 855# Rear

Sorry I don't have more C5 spring data.

tb30570

here are some part numbers I found

GM OEM Z06 Front Swaybar: 10419094
GM OEM Z06 Front swaybar bushings: 10419095 (2 needed)
GM OEM Z51 Front swaybar: 10424741
GM OEM Z51 Front swaybar bushings: 10424742 (2 needed)
GM OEM Z06/Z51 Rear Swaybar: 10424743
GM OEM Z06/Z51 Rear swaybar bushings 10431951 (2 needed)
GM OEM 2002+ Z06 Aluminum endlinks: 10435298

This link tells how to swap the swaybar:
http://www.ls1howto.com/index.php?article=16

Z06 Front spring: 22178729
Z06 Rear spring: 22188038
Z51 Front spring: 22178729 (note: same as Z06)
Z51 Rear spring: 22179020
Base Front Spring: 22178728
Base Rear Spring: 22179019

How to swap the springs:
http://www.ls1howto.com/index.php?article=20

beerkat

Here is a link to the NCM. YOu can find most of what you are looking for except spring rates.


http://www.corvettemuseum.com/specs/2001/specs.htm

geerookie

I usually go here to find specs but they don't have the spring rates for the '01

http://www.corvetteactioncenter.com/...2001specs.html

Jason

I have some take-off Z06 pieces, but you're looking for base model stuff?

varkwso

Yep - base model. I have lots of ZO6 takeoffs...

AU N EGL

Have an 03 Z51 suspension, shocks, sways and springs. Used about a year.

jasonberkeley

Will the C5 T1 springs fit on a C6 properly?

gkmccready

The front will, the rear won't. C6 rear springs mount like C5/C6 fronts...

geerookie

Sent PM

varkwso

Sent email.