en route to 500+rwhp 
Do heads make much of a difference on a stock displacement LS2?
Thread Starter
Teching In
Joined: May 2006
Posts: 2
Likes: 0
From: Columbus, Ohio
Do heads make much of a difference on a stock displacement LS2? My LS2 is presently pushing 416rwhp with the following mods:
LPE CAI, Ported TB, Futral F11-112 cam, SLP LT headers w/cats, UD pully, 160deg thermo, Jeff Creech tuned
I've considered adding a FAST 90 plenum intake and a set of ported heads. Will the heads make much of a difference with stock displacement? I'm thinking of bumping it up to a 402 next year. I presume ported heads would be very helpful with that, but what about now? I've been told I would see very limited improvement with heads right now. Thoughts?
LPE CAI, Ported TB, Futral F11-112 cam, SLP LT headers w/cats, UD pully, 160deg thermo, Jeff Creech tuned
I've considered adding a FAST 90 plenum intake and a set of ported heads. Will the heads make much of a difference with stock displacement? I'm thinking of bumping it up to a 402 next year. I presume ported heads would be very helpful with that, but what about now? I've been told I would see very limited improvement with heads right now. Thoughts?
I believe you will see about 460-480hp if you were to get a good set of ported heads, bump compression and the FAST 90 setup. You're stock LS2 manifold and heads are REALLY choking the engine.
I think you should get the L-92 head/intake setup
I think you should get the L-92 head/intake setup
402 
TECH Apprentice
Joined: Sep 2005
Posts: 370
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From: DFW, TX
there is a TRak cam only on here putting down 450.
a ported LS2 from lt1dave would be a good investment. he has dyno comparisons between fast 90 unported vs his ported LS2. half the cost of a FAST90 and you can get a ported LS2 and similar results and a more cost efficient mod. ported fast will run cost of the intake + port work $1200-$1400 depending on who does the work.
ill be going with his LS2 intake on my LS2 403 and a set of patriot stage 2 heads and dave's custom 23X cam. This set up on his car in their shop put down 531/467 and with the ported fast 544/480(he didnt post these dyno results on a comparison).
Originally Posted by sprayjunkie
Would have to agree on the L-92 setup, but FWIW my buddies LS2 C6 made 477 @ the wheels with AFR 205s, Fast 90/90, thunder TRak cam, Kooks, etc....
a ported LS2 from lt1dave would be a good investment. he has dyno comparisons between fast 90 unported vs his ported LS2. half the cost of a FAST90 and you can get a ported LS2 and similar results and a more cost efficient mod. ported fast will run cost of the intake + port work $1200-$1400 depending on who does the work.
ill be going with his LS2 intake on my LS2 403 and a set of patriot stage 2 heads and dave's custom 23X cam. This set up on his car in their shop put down 531/467 and with the ported fast 544/480(he didnt post these dyno results on a comparison).
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Thread Starter
Teching In
Joined: May 2006
Posts: 2
Likes: 0
From: Columbus, Ohio
Originally Posted by Blown04Z06
oh and one more thing. for now ill be bolting my stock LS6 heads back on the 403, so when i do the head swap ill be able to give you exact figures of how much of a different heads will make.
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