Critique my H/C combo and please help suggest me a better cam
06-21-2009, 10:09 AM
#1
Launching!
Thread Starter
Critique my H/C combo and please help suggest me a better cam Car is a 1998 Camaro SS, A4
Mods are:
FRA mod
KN filter
Lid
85 mm MAF
90mm TB
Ported LS2 intake
Patriot 97-98 stage 2 CNC ported heads ( flow 292 intake, 216 exhaust @ .600 lift
Thunder racing cam 227/227 640/640 114 cam
1 3/4 stainless longtube headers
2.5 true duals, x pipe, dumped
160 thermostat
25% UD pulley
Fuddle 3300, 1.9 STR stall
3.73 gears in a 10 bolt
Rear tires are 315/35/17 nittos. Stock fuel injectors
Dyno was done at Vector Motorsports (across the street from Katech) on their Mustang dyno.
Numbers are:
370 RWHP@ 6500 and 321 torque @ 5400 UNLOCKED
390 RWHP @6600 and 346 torque @ 5200 LOCKED
Car is mostly a street car, sees some track time. It runs really good from a dead stop, but from a roll it isnt the greatest. I was thinking about upgrading the stall to a 3500 and 1.8 STR but I dont want gas mileage and driveability to suffer.
Based upon the cam I have now, ( Thunder racing cam 227/227 640/640 114) Is there a better cam that would give me a better low end and higher RWHP numbers? It would be nice to make the power at a lower RPM lets say 6200 vs the 6600 I am reving to now.
Im thinking new cam numbers of:
228/232 625/625 114
Would that be a better cam for me?
Vector did tell me that their stage 2 cam would get me to about 420 RWHP. Anyone know the specs on that?
Mods are:
FRA mod
KN filter
Lid
85 mm MAF
90mm TB
Ported LS2 intake
Patriot 97-98 stage 2 CNC ported heads ( flow 292 intake, 216 exhaust @ .600 lift
Thunder racing cam 227/227 640/640 114 cam
1 3/4 stainless longtube headers
2.5 true duals, x pipe, dumped
160 thermostat
25% UD pulley
Fuddle 3300, 1.9 STR stall
3.73 gears in a 10 bolt
Rear tires are 315/35/17 nittos. Stock fuel injectors
Dyno was done at Vector Motorsports (across the street from Katech) on their Mustang dyno.
Numbers are:
370 RWHP@ 6500 and 321 torque @ 5400 UNLOCKED
390 RWHP @6600 and 346 torque @ 5200 LOCKED
Car is mostly a street car, sees some track time. It runs really good from a dead stop, but from a roll it isnt the greatest. I was thinking about upgrading the stall to a 3500 and 1.8 STR but I dont want gas mileage and driveability to suffer.
Based upon the cam I have now, ( Thunder racing cam 227/227 640/640 114) Is there a better cam that would give me a better low end and higher RWHP numbers? It would be nice to make the power at a lower RPM lets say 6200 vs the 6600 I am reving to now.
Im thinking new cam numbers of:
228/232 625/625 114
Would that be a better cam for me?
Vector did tell me that their stage 2 cam would get me to about 420 RWHP. Anyone know the specs on that?
Last edited by Droptoplt1ta; 06-21-2009 at 10:18 AM.
06-21-2009, 11:47 AM
#4
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Different set-up here, but with my 228/232 110+2 I am making peak HP at ~6000 Rpm's. It holds it to very well to ~6400. It also kicks in quite well at the lower/middle rpm's.
I am hitting ~42 IVC on that cam.
Perhaps that will give you a general idea in regards to picking the right valve events.
Good luck in your research.
..WeathermanShawn..
I am hitting ~42 IVC on that cam.
Perhaps that will give you a general idea in regards to picking the right valve events.
Good luck in your research.
..WeathermanShawn..
06-22-2009, 01:29 PM
#5
look at my setup and copy it...
fuddle has to go, same with the ported ls2, cam has huge lift for a street car on both intake and exhaust...
ls6 intake, mid to low 230 cam, ss3600 stall, ftra and you are will really wake up
fuddle has to go, same with the ported ls2, cam has huge lift for a street car on both intake and exhaust...
ls6 intake, mid to low 230 cam, ss3600 stall, ftra and you are will really wake up
06-22-2009, 07:07 PM
#6
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Get rid of intake and heads imo. Otherwise port the heads, FAST 92/92, more SCR and a larger cam will do the job for you. Junk the Fuddle also and put a YANK in it.
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06-22-2009, 08:25 PM
#8
Launching!
Thread Starter
Why did the tuner, Vector tell me that the heads are ok, and stated the cam is holding me back from the power I want? They advised a better cam?
Thunder racing recommended the cam I have right now to me. How come I do not see anyone running this cam?
Thunder racing recommended the cam I have right now to me. How come I do not see anyone running this cam?
06-22-2009, 11:50 PM
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1st thing I would do it get a new converter. Sell the LS2 intake and go to a LS6 and P&P TB(Fast 92/92 if you have the bank). Get some nice heads (TFS as cast like Ron mentioned would be nice). If after doing those things the car doesn't feel noticeably stronger and make more power I would start looking at a new cam.
06-23-2009, 06:50 AM
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What is wrong with heads that flow 300 at .600 lift? Why should he spend his money I think a better intake and new converter is all he needs something around 4000.. I also just noticed no injector upgrade.. My car is at 99 percent with only a cam and 349 rwhp
Last edited by stumprrp; 06-23-2009 at 08:02 AM.
06-23-2009, 09:12 AM
#12
2002 C5
241 castings heads 305 @ 600
232/238 600/600 109 LSA
Yank 3400 stall 3.15 C5 diff
RPM Stage 2 4l60E
American Racing headers
American Racing 3" X 2 1/2" "X" pipe
36lbs Injectors
LS2 ported intake
85MM Maf
90MM port and polished TB
After market fuel Rails
Vararam VRV2 intake
and tuned to 2500 ft altitude. About 420 - 430 RWHP Street tuned
Next week a Dyno WOT tune and a swap in rear diff to 3.42.
That should give you a good starting point and I am very happy with it. This is on a stock LS1 rotating assembly with about 80K on the clock.
241 castings heads 305 @ 600
232/238 600/600 109 LSA
Yank 3400 stall 3.15 C5 diff
RPM Stage 2 4l60E
American Racing headers
American Racing 3" X 2 1/2" "X" pipe
36lbs Injectors
LS2 ported intake
85MM Maf
90MM port and polished TB
After market fuel Rails
Vararam VRV2 intake
and tuned to 2500 ft altitude. About 420 - 430 RWHP Street tuned
Next week a Dyno WOT tune and a swap in rear diff to 3.42.
That should give you a good starting point and I am very happy with it. This is on a stock LS1 rotating assembly with about 80K on the clock.
Last edited by 02*C5; 06-23-2009 at 09:50 AM.
06-23-2009, 11:04 AM
#13
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That cam on a 116LSA made 371 with STOCK manifolds in my 05 CTS-V. With a set of ET 215's that cam has made 435-450 in auto cars with 3200 Vig's. Also had an 04 GTO make 425 through a TCI3500 with that exact cam and a set of AFR 205's...
Shane
Shane
06-26-2009, 11:45 AM
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That converter may have a hand in lowering the dyno numbers but not really sure if it would lose a whole lot when "locked". The LS2 intake could be part of the problem but in ported form they seem to produce okay numbers anyway. The 3.73 gears may zap up to 10hp I've read though, that would give you 400 even with 3.23's which is good for autos but that cam should make a little more locked.
I would suspect that those heads are where your holding back power. They may have been good back in 97-98 but thats over 10 years ago, head porting tech has come a long way since then. The low torque also makes me want to think it's the heads.
I would expect those numbers with your whole setup only with stock 241/853 heads.
I would suspect that those heads are where your holding back power. They may have been good back in 97-98 but thats over 10 years ago, head porting tech has come a long way since then. The low torque also makes me want to think it's the heads.
I would expect those numbers with your whole setup only with stock 241/853 heads.
06-26-2009, 02:04 PM
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Since you already have a 90m tb I would look into getting a Fast intake. Look for a used one maybe if you can't afford new. I'd also junk the Fuddle converter and get one from Circle D or Yank. Something with a 3600 stall and 2.5 str, that would really wake up the car.
