M3 Muscle

I'm getting my combo narrowed down. I have decided to go with the slightly smaller Turbonetics GT-K 1000 vs. the Precision T-76 GTS in favor more low end power (faster spool). I will be putting it on a LS1/LS6 based 383 stroker. I am leaning towards the Lingenfelter GT2-3 / GT-7 cam and around 9:1 compression. Intercooler will be an air-to-air w/ Alky Control methanol injection. My goal is 750+ rwhp.

Anybody see anything wrong with this combo? Could I run more compression (9.25:1) or would you suggest less? Which cam would best suit this combo, the GT2-3 or the GT-7?

Also, what would the turbo guru's extimate the full spool to be w/ 10-15 lbs of boost?

ddnspider

iTrader: (26)

i run 9:1 383 w/ 76gts.starts spooling at about 25-2800rpms

M3 Muscle

What cam are you running? How much power?

ddnspider

iTrader: (26)

custom 226/222 makes 530rwhp on 7psi with boost issues

DrTurbo

iTrader: (3)

That turbo is a little on the small side for a 383. The 76GTS or ST series is much better suited.

obZidian

iTrader: (2)

*cough*S76*cough*

abbaskhan

it could it be that your 76 is making positive boost by 2500rpm
it could be spooling much sooner positive manifold pressure and spooling is 2 different things ....correct me if im wrong but that seems to be the case
i would think you would need a 80mm and a .96 ar on the exhaust side

ddnspider

iTrader: (26)

if that was in reference to me i dont think the turbo is too small.i was having boost issues because of the controller that was on the car now,no more boost issues.

JZ 97 SS 1500

iTrader: (2)

Like said above an ST series will do the trick, or the very least a 76GTS. A 383 is more then enough for a small T4 flange and turbine wheel.