Im running Victor Jr, sheetmetal upper, and 102 TB with LS3 heads on my setup im building

 

i have that heads already and Fast, do i gain more power and get nice spooling?
I use this car as highway races, bikes with 60-80mph rolling
so do you prefer to remove my heads and swap it to 317's and LS6 itake?
thanks guys

 

if the heads are already on the car and so is the intake, just leave it. i was under the impression you were going to purchase these items and needed help choosing which ones to go with.

 

I did a poll a while back on the fasts with boost. alot of people have shoved a ton of boost down them and had no issues (excluding the old 90's that they no longer make thus the new 92)

I started looking around to see what the torque curves were and which head seemed to like more timing blah blah blah.

I came to the conclusion on the intake that if an ls6 has been used in a setup like MM like allout06 suggested, and ran 8's then the fast will be fine would it not? Necessary....maybe not. But Im pretty damn sure it flows better, and that it looks better. The ls6 intakes are getting old and im hearing about them cracking ect......

If I were you, id run what I have. If money is not a problem, and you want to squeeze every last drop out of the setup, then a high ram and some PRC/AFR/TFS heads would be prime, and based on what you can compare from different tuning data you can make your selection between cathedral and square.

 

vote for whatever h/i got on there now.
a cam ground for the current engine will prolly make the most of whats there now.and imo the best bang for the buck for ur application

 

i will run my setup now
and i will let you know what it will gain next week on dyno
thanks

 

I gain 786rwhp/815rwtq @ 15.5psi on pump gas with stock LS3 heads and intake, 66mm WG

is it good for that S480 T4 1.1 a/r turbo??

any opinion?

 

With that turbo and CI I would prob stick with the LS3's if they are already on there. The LS3 manifold and TB as well. That's going to be really high back psi so the shorter exh duration is not a bad thing. There is a T4 96mm S480 available now that will prob pick you up more than messing with the heads and intake.