Where can I find some more power?
08-01-2008, 05:28 PM
#1
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Where can I find some more power? Current setup:
2004 Pontiac GTO
Stock bottom end LS1 346
PRC Stage 2.5 5.3L heads with 2.04/1.575 valves and "race" valve job ~62cc Chambers
Custom spec'd 224/230 XFI cam (Cam Dr. numbers: 227/232.5 .610/.604 111+2)
Cometic .040 Gaskets (11.25:1 SCR, 8.5:1 DCR)
Unported Fast90/PTM90
Kooks 1 7/8" LT Headers w/cats
Magnaflow Catback (True dual w/X-pipe)
Yank 3600 stall
UDP
CAI
Lots of tuning.
Last time at the Dyno netted 412/374 locked converter. Unlocked was around 397/350
I'm looking for a good 45-50 more WHP N/A
I was trying to avoid an EWP (Its a DD and I'm not sure how reliable they are long-term), but would consider new heads, new cam, ported FAST, pretty much anything else if I could guarantee the gains I'm looking for on stock cubes.
I know its a tall order, but if some of these guys can make 500+ on an M6 then 450+ on an A4 shouldn't be completely impossible.
2004 Pontiac GTO
Stock bottom end LS1 346
PRC Stage 2.5 5.3L heads with 2.04/1.575 valves and "race" valve job ~62cc Chambers
Custom spec'd 224/230 XFI cam (Cam Dr. numbers: 227/232.5 .610/.604 111+2)
Cometic .040 Gaskets (11.25:1 SCR, 8.5:1 DCR)
Unported Fast90/PTM90
Kooks 1 7/8" LT Headers w/cats
Magnaflow Catback (True dual w/X-pipe)
Yank 3600 stall
UDP
CAI
Lots of tuning.
Last time at the Dyno netted 412/374 locked converter. Unlocked was around 397/350
I'm looking for a good 45-50 more WHP N/A
I was trying to avoid an EWP (Its a DD and I'm not sure how reliable they are long-term), but would consider new heads, new cam, ported FAST, pretty much anything else if I could guarantee the gains I'm looking for on stock cubes.
I know its a tall order, but if some of these guys can make 500+ on an M6 then 450+ on an A4 shouldn't be completely impossible.
08-01-2008, 07:44 PM
#2
i think swaping your cam defnitly well give you more power , your heads seems fine looking at bigger cams near 232-234 intake 240-246 exhaust is more realistic i had the G5X3 and i made 426 with mods in sig (couldnt make more A4 died on dyno). also runing mafless well give you more 5 to 10 hp ,plus if you have a rear end like 3,73 or higher will lower your numbers 5 to 8 hp ! .
08-01-2008, 07:54 PM
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look at some TFS 215 heads and a cam from vengance racing- or a custome one from patric G.
you would be looking at a lot of money to get 40-50 more rwhp. Why not just hit it with a 50 shot- would cost a lot less.
you would be looking at a lot of money to get 40-50 more rwhp. Why not just hit it with a 50 shot- would cost a lot less.
08-01-2008, 08:14 PM
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I've got a deal with the wife that I won't spray it......
I can supercharge if I want, but I figured a set of TFS heads and bigger cam may be a tad cheaper.
I just hate to spend close to 3K on new heads and cam for a gain of only 10-12 HP. If I could guarantee the results would put me where I want to be, I'd order them tomorrow. What I really want more than just a dyno number is a 10.99@120+ pass at the track. That is a hard thing to do in a GTO on an N/A LS1. Which is why I'm looking for advice.
Could I spray a 100 shot and get there......? Of course.
But I like to take the road less traveled.
I can supercharge if I want, but I figured a set of TFS heads and bigger cam may be a tad cheaper.
I just hate to spend close to 3K on new heads and cam for a gain of only 10-12 HP. If I could guarantee the results would put me where I want to be, I'd order them tomorrow. What I really want more than just a dyno number is a 10.99@120+ pass at the track. That is a hard thing to do in a GTO on an N/A LS1. Which is why I'm looking for advice.
Could I spray a 100 shot and get there......? Of course.
But I like to take the road less traveled.