Desktop Dyno request thread
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
350 4 bolt
Bowtie, Phase 2, iron 14011034 heads, angle plug, 64cc, 2.02-1.6, 184cc
Lunati 60103 cam, duration @ .050 IN/EX: 227/233;Lift IN/EX: .489"/.504";LSA / ICL: 110/106;RPM Range: 1800-6200
RPM Air Gap manifold with a Street Avenger 770 carb.
Crank 3.75" Stroke, Pistons TRW Forged Flat Top, Rods 5.7"
9:1 CR
headers and 2.5 underbody exhaust.
Bowtie, Phase 2, iron 14011034 heads, angle plug, 64cc, 2.02-1.6, 184cc
Lunati 60103 cam, duration @ .050 IN/EX: 227/233;Lift IN/EX: .489"/.504";LSA / ICL: 110/106;RPM Range: 1800-6200
RPM Air Gap manifold with a Street Avenger 770 carb.
Crank 3.75" Stroke, Pistons TRW Forged Flat Top, Rods 5.7"
9:1 CR
headers and 2.5 underbody exhaust.
Drifting
Joined: May 2005
Posts: 1,909
Likes: 6
From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
If you are still doing this ....I would love to see the numbers for......
Stock displacement 1974 LS4 454
118 cc heads...stock 781s
8.25/1 GM flat tops
Stock 750 Qjet
Stock exhaust
this camshaft....
Brand: COMP Cams - High Energy
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 1,200-5,200
Intake Duration at 050 inch Lift: 212
Exhaust Duration at 050 inch Lift: 212
Duration at 050 inch Lift: 212 int./212 exh.
Advertised Intake Duration: 260
Advertised Exhaust Duration: 260
Advertised Duration: 260 int./260 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.475 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.475 in.
Valve Lift with Factory Rocker Arm Ratio: 0.475 int./0.475 exh. lift
Lobe Separation (degrees): 110
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Grind Number: CB 260H-10
Lifter Style: Hydraulic flat tappet
Stock displacement 1974 LS4 454
118 cc heads...stock 781s
8.25/1 GM flat tops
Stock 750 Qjet
Stock exhaust
this camshaft....
Brand: COMP Cams - High Energy
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 1,200-5,200
Intake Duration at 050 inch Lift: 212
Exhaust Duration at 050 inch Lift: 212
Duration at 050 inch Lift: 212 int./212 exh.
Advertised Intake Duration: 260
Advertised Exhaust Duration: 260
Advertised Duration: 260 int./260 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.475 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.475 in.
Valve Lift with Factory Rocker Arm Ratio: 0.475 int./0.475 exh. lift
Lobe Separation (degrees): 110
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Grind Number: CB 260H-10
Lifter Style: Hydraulic flat tappet
Melting Slicks
Joined: Mar 2005
Posts: 2,187
Likes: 7
From: Chetwynd B.C.
Billa,
Finally pulled the trigger on the cam I will be running. Would appreciate if you could run this final dyno for me.
Here's the link to the cam but we are getting it custom ground to .650in./.600ex. lift and and a LSA of 113.
http://store.summitracing.com/partde...8&autoview=sku
Car #’s
LS5 454 BBC
bored .030 over. stroke: 4.00 bore: 4.281
Forged pistons
Cylinder heads. Chev.3964290(shaved 12 thous)104cc chamber oval closed.
Intake Valve: 2.19 undercut
Exhaust Valve 1.72 undercut
Rocker ratio 1.72 ratio
Compression: 10.1:1
Carb: Holley Street Avenger 770
Aluminum Edelbrock Performer RPM Intake manifold (# 7161 12105)
Exhaust: 2 ½” Headman headers
#'s off cam card
P/N 11-000-9 S/N M3394-07
CB 3014B/3035B HR 113.0
Gross lift .606/.601
Duration at .006 268/276
.050 valve timing
open 0, 38 close ABDC int
open 49, -5 close ABDC
Cam installed at 109 ICL
218/224 @ .050 duration
.357/.354 lobe lift
113 lobe separation
Thanx,
shmoky
Finally pulled the trigger on the cam I will be running. Would appreciate if you could run this final dyno for me.
Here's the link to the cam but we are getting it custom ground to .650in./.600ex. lift and and a LSA of 113.
http://store.summitracing.com/partde...8&autoview=sku
Car #’s
LS5 454 BBC
bored .030 over. stroke: 4.00 bore: 4.281
Forged pistons
Cylinder heads. Chev.3964290(shaved 12 thous)104cc chamber oval closed.
Intake Valve: 2.19 undercut
Exhaust Valve 1.72 undercut
Rocker ratio 1.72 ratio
Compression: 10.1:1
Carb: Holley Street Avenger 770
Aluminum Edelbrock Performer RPM Intake manifold (# 7161 12105)
Exhaust: 2 ½” Headman headers
#'s off cam card
P/N 11-000-9 S/N M3394-07
CB 3014B/3035B HR 113.0
Gross lift .606/.601
Duration at .006 268/276
.050 valve timing
open 0, 38 close ABDC int
open 49, -5 close ABDC
Cam installed at 109 ICL
218/224 @ .050 duration
.357/.354 lobe lift
113 lobe separation
Thanx,
shmoky
Last edited by shmoky; Feb 15, 2008 at 05:39 PM. Reason: corrected some #'s and added final cam
Pro
Joined: Feb 2006
Posts: 718
Likes: 7
From: Jacksonville , NC
I had a 1975 L82 model - including the '962 cam - so this was an easy tweak. The flow numbers I used were for the 195cc SBC Super Street heads from Patriot's web site as they appeared to be pretty close to what you were spec'ing and the web had values from .100 through .700.
Clearly not getting much from the heads with that cam, and I suspect that's showing up in the weird torque curve. I swapped in a .550 lift roller hydraulic and saw about 460HP :-D
Clearly not getting much from the heads with that cam, and I suspect that's showing up in the weird torque curve. I swapped in a .550 lift roller hydraulic and saw about 460HP :-D
cam card located here: http://www.compcams.com/Technical/Se...amDetails.asp?
PartNumber=12-246-3
Thanks
Bob
Race Director
Joined: Jan 2003
Posts: 15,175
Likes: 86
From: State of Confusion
billa..... when you get the opportunity, please run this info for me.....
what kind of HP/TQ would a ZZ502
http://paceperformance.com/index.asp...D&ProdID=26942
with no-other modifications than the 572/620 camshaft
http://paceperformance.com/index.asp...&ProdID=136150
& matching valve-springs, P/N 88963934, make?
Here are the quick-facts about that hydraulic/roller cam:
Intake lift - .632"
Exhaust lift - .632"
Duration @ .050" lift - I = 254*, E = 264*
LSA = 112*
I'd consider this for my '79 Z28, if it'd run into the 11s, because I feel it might do this with little-to-no maintenance, and without turning much beyond 6000 RPM, on pump-gas.
As-always, your help is greatly-appreciated!
what kind of HP/TQ would a ZZ502
http://paceperformance.com/index.asp...D&ProdID=26942
with no-other modifications than the 572/620 camshaft
http://paceperformance.com/index.asp...&ProdID=136150
& matching valve-springs, P/N 88963934, make?
Here are the quick-facts about that hydraulic/roller cam:
Intake lift - .632"
Exhaust lift - .632"
Duration @ .050" lift - I = 254*, E = 264*
LSA = 112*
I'd consider this for my '79 Z28, if it'd run into the 11s, because I feel it might do this with little-to-no maintenance, and without turning much beyond 6000 RPM, on pump-gas.
As-always, your help is greatly-appreciated!
Burning Brakes
Joined: Feb 2002
Posts: 825
Likes: 14
From: wadsworth ohio
Billa,would you try this mild combo for me.
sbc 3835.7 rods
Edelbrock rpm heads,2.02 and 1.60 170flow 1.5 rockers
9.5 compression
dynamax headers 1 5/8 tubes
Cam link: http://www.compcams.com/Technical/Se...umber=12-242-2
Quadrajet carb with 8004 weind intake
Thanks
sbc 3835.7 rods
Edelbrock rpm heads,2.02 and 1.60 170flow 1.5 rockers
9.5 compression
dynamax headers 1 5/8 tubes
Cam link: http://www.compcams.com/Technical/Se...umber=12-242-2
Quadrajet carb with 8004 weind intake
Thanks
Melting Slicks
Joined: Mar 2002
Posts: 2,164
Likes: 7
From: Beringen
Would it be possible to run this combo :
SBC 400 block with 4.165" bore
stroke 3.250"
rods 6.250"
heads : Dart PRO 1 aluminum 215cc with 2.05/1.6 valves (flow on intake at .6 is 276), CR 10/1
cam : mech. roller : 246/256 @ .05 and .63 lift on intake and exhaust lca 112,5° (108° intake and 117° exhaust)
Valve events @ .05 : intake : 14° btdc, 52° abdc, exhaust 64° bbdc, 12° atdc
individual throttle bodies 50 mm with fi, diameter of runners 50 mm
Jesel shaft rockers 1.5
headers 1 3/4" std length
dual exhaust.
SBC 400 block with 4.165" bore
stroke 3.250"
rods 6.250"
heads : Dart PRO 1 aluminum 215cc with 2.05/1.6 valves (flow on intake at .6 is 276), CR 10/1
cam : mech. roller : 246/256 @ .05 and .63 lift on intake and exhaust lca 112,5° (108° intake and 117° exhaust)
Valve events @ .05 : intake : 14° btdc, 52° abdc, exhaust 64° bbdc, 12° atdc
individual throttle bodies 50 mm with fi, diameter of runners 50 mm
Jesel shaft rockers 1.5
headers 1 3/4" std length
dual exhaust.
Last edited by Belgian1979vette; Nov 30, 2007 at 04:57 PM.
Instructor
Joined: Aug 2005
Posts: 209
Likes: 8
From: Hollywood FL
billa, do you mind doing one more? thanks.
sbc
bore: 4.030
stroke: 3.48
rods: 5.7
compression: 10.5
heads: edelbrock performer rpm
cam: comp magnum 282s
Intake Exhaust
Valve Adjustment 0.022 0.022
Gross Valve Lift 0.495 0.495
Duration At 0.015 Tappet Lift 282 282
Valve Timing At 0.015
Open Close
Intake 35 67
Exhaust 75 27
Duration @.050 236 236
headers: 1-5/8
intake manifold: factory Z/28,LT-1
carb: Holley 750 VS
sbc
bore: 4.030
stroke: 3.48
rods: 5.7
compression: 10.5
heads: edelbrock performer rpm
cam: comp magnum 282s
Intake Exhaust
Valve Adjustment 0.022 0.022
Gross Valve Lift 0.495 0.495
Duration At 0.015 Tappet Lift 282 282
Valve Timing At 0.015
Open Close
Intake 35 67
Exhaust 75 27
Duration @.050 236 236
headers: 1-5/8
intake manifold: factory Z/28,LT-1
carb: Holley 750 VS
Last edited by MonzaRedConvert; Nov 30, 2007 at 04:59 PM.
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Instructor
Joined: Aug 2005
Posts: 209
Likes: 8
From: Hollywood FL
Would it be possible to run this combo :
SBC 400 block with 4.165" bore
stroke 3.250"
rods 6.250"
heads : Dart PRO 1 aluminum 215cc with 2.05/1.6 valves (flow on intake at .6 is 276), CR 10/1
cam : mech. roller : 246/256 @ .05 and .63 lift on intake and exhaust lca 112,5° (108° intake and 117° exhaust)
Valve events @ .05 : intake : 14° btdc, 52° abdc, exhaust 64° bbdc, 12° atdc
individual throttle bodies 50 mm with fi, diameter of runners 50 mm
Jesel shaft rockers 1.5
headers 1 3/4" std length
dual exhaust.
SBC 400 block with 4.165" bore
stroke 3.250"
rods 6.250"
heads : Dart PRO 1 aluminum 215cc with 2.05/1.6 valves (flow on intake at .6 is 276), CR 10/1
cam : mech. roller : 246/256 @ .05 and .63 lift on intake and exhaust lca 112,5° (108° intake and 117° exhaust)
Valve events @ .05 : intake : 14° btdc, 52° abdc, exhaust 64° bbdc, 12° atdc
individual throttle bodies 50 mm with fi, diameter of runners 50 mm
Jesel shaft rockers 1.5
headers 1 3/4" std length
dual exhaust.
Drifting
Joined: May 2005
Posts: 1,909
Likes: 6
From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
If you get time.......will probably be pretty tame.
Thanks.........Fred
Thanks.........Fred
If you are still doing this ....I would love to see the numbers for......
Stock displacement 1974 LS4 454
118 cc heads...stock 781s
8.25/1 GM flat tops
Stock 750 Qjet
Stock exhaust
this camshaft....
Brand: COMP Cams - High Energy
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 1,200-5,200
Intake Duration at 050 inch Lift: 212
Exhaust Duration at 050 inch Lift: 212
Duration at 050 inch Lift: 212 int./212 exh.
Advertised Intake Duration: 260
Advertised Exhaust Duration: 260
Advertised Duration: 260 int./260 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.475 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.475 in.
Valve Lift with Factory Rocker Arm Ratio: 0.475 int./0.475 exh. lift
Lobe Separation (degrees): 110
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Grind Number: CB 260H-10
Lifter Style: Hydraulic flat tappet
Stock displacement 1974 LS4 454
118 cc heads...stock 781s
8.25/1 GM flat tops
Stock 750 Qjet
Stock exhaust
this camshaft....
Brand: COMP Cams - High Energy
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 1,200-5,200
Intake Duration at 050 inch Lift: 212
Exhaust Duration at 050 inch Lift: 212
Duration at 050 inch Lift: 212 int./212 exh.
Advertised Intake Duration: 260
Advertised Exhaust Duration: 260
Advertised Duration: 260 int./260 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.475 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.475 in.
Valve Lift with Factory Rocker Arm Ratio: 0.475 int./0.475 exh. lift
Lobe Separation (degrees): 110
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Grind Number: CB 260H-10
Lifter Style: Hydraulic flat tappet
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
I can run this cam - but it's VERY mild. The stock LS-5 cam (3904364) is .461/.461 lift...and the heads flow well into the .500's. Are you sure you want the numbers for this cam?
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
Here's the link to the cam but we are getting it custom ground to .650in./.600ex. lift and and a LSA of 113.
http://store.summitracing.com/partde...8&autoview=sku
Car #’s
LS5 454 BBC
bored .030 over. stroke: 4.00 bore: 4.281
Forged pistons
Cylinder heads. Chev.3964290(shaved 12 thous)101cc chamber oval closed.
Intake Valve: 2.19 undercut
Exhaust Valve 1.72 undercut
Rocker ration 1.72 ratio
Compression: 10.1:1
Carb: Holley Street Avenger 770
Aluminum Edelbrock Performer RPM Intake manifold (# 7161 12105)
Exhaust: 2 ½” Headman headers
http://store.summitracing.com/partde...8&autoview=sku
Car #’s
LS5 454 BBC
bored .030 over. stroke: 4.00 bore: 4.281
Forged pistons
Cylinder heads. Chev.3964290(shaved 12 thous)101cc chamber oval closed.
Intake Valve: 2.19 undercut
Exhaust Valve 1.72 undercut
Rocker ration 1.72 ratio
Compression: 10.1:1
Carb: Holley Street Avenger 770
Aluminum Edelbrock Performer RPM Intake manifold (# 7161 12105)
Exhaust: 2 ½” Headman headers
Drifting
Joined: May 2005
Posts: 1,909
Likes: 6
From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
No problem...beggers can't be too choosey. Yea, run the numbers if you can. The stock cam in a 74 LS4 was about 440/440 with 210/210. Just wanted to see what the Comp HE 260 with 475/475 - 212/212 would do over the GM stock.
I do appreciate it and have a great Christmas!
Last edited by fotyfobravo; Dec 12, 2007 at 10:27 PM.
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
I could not get the DD model to align with published specs for the ZZ502. HP came in just about right with 497HP@5000 RPM, but torque was off the map at 610@3000. Given that, I'm not sure the comparison would have any validity.Note that I found flow numbers on a public forum (always suspect) and did not have the full cam card...and this often gives non-ideal results.
Sorry I couldn't help with this one
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
sbc 3835.7 rods
Edelbrock rpm heads,2.02 and 1.60 170flow 1.5 rockers
9.5 compression
dynamax headers 1 5/8 tubes
Cam link: http://www.compcams.com/Technical/Se...umber=12-242-2
Quadrajet carb with 8004 weind intake
Edelbrock rpm heads,2.02 and 1.60 170flow 1.5 rockers
9.5 compression
dynamax headers 1 5/8 tubes
Cam link: http://www.compcams.com/Technical/Se...umber=12-242-2
Quadrajet carb with 8004 weind intake
No surprises here and I think these numbers are about right.
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
SBC 400 block with 4.165" bore
stroke 3.250"
rods 6.250"
heads : Dart PRO 1 aluminum 215cc with 2.05/1.6 valves (flow on intake at .6 is 276), CR 10/1
cam : mech. roller : 246/256 @ .05 and .63 lift on intake and exhaust lca 112,5° (108° intake and 117° exhaust)
Valve events @ .05 : intake : 14° btdc, 52° abdc, exhaust 64° bbdc, 12° atdc
individual throttle bodies 50 mm with fi, diameter of runners 50 mm
Jesel shaft rockers 1.5
headers 1 3/4" std length
dual exhaust.
stroke 3.250"
rods 6.250"
heads : Dart PRO 1 aluminum 215cc with 2.05/1.6 valves (flow on intake at .6 is 276), CR 10/1
cam : mech. roller : 246/256 @ .05 and .63 lift on intake and exhaust lca 112,5° (108° intake and 117° exhaust)
Valve events @ .05 : intake : 14° btdc, 52° abdc, exhaust 64° bbdc, 12° atdc
individual throttle bodies 50 mm with fi, diameter of runners 50 mm
Jesel shaft rockers 1.5
headers 1 3/4" std length
dual exhaust.
A little patience is good as well
Thread Starter
Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
