Coming from an LE2/long tubes, firebird and im in the process of building a single T70/355. I have a mid sized cam and unported trickflows. I plan on running 8-12psi... what can I expect as far as performance increase? I used to slowly but steadily pull on stock C6 corvettes. The car is a 6 speed with 60lbs injectors,racetronix pump setup,and is intercooled. Turbo is an MP70. And Like I said I plan on running somewhere around 8-12 psi. Shooting for 11's if possible.Oh and the car is a good 200lbs lighter than a car with a similar setup.

 

The TFS heads are ported though, not as cast correct? How is the hotparts routed (true headers, cast manifolds, log setup)? No reason why 600-650rwhp wouldnt be attainable with an M6 @ 12-14psi.

 

If your suspension is correctly setup, and you have a good set of slicks, then I would say 11's are easily within your reach.

 

my buddys 71 nova has a 355 and a 70 mm turbo. hes got a pretty basic motor but with that turbo and his gear(3.73s) he was hittin 10.60s on a 50 shot off the line, dunno if that helps your guage a little?

 

maybe 11's

 

non ported but I have ptk headers and my own cold side setup with one of those OBX intercoolers. Hoping for maybe 550 hp at the wheels and like I said 11's on 315/35 nittos

 

I guess I am confused about the "non ported" part. Are they "as cast" or is their basic porting done from TFS? You dont want to slap on heads that are as cast (if they resemble AFR as cast heads). Are the ports finished looking?

 

They are "as cast".I got them bare and added the hardware. And why not? They are better off than the stockers arent they?

 

Better than stock unported heads yes, not better than stock ported heads.

 

But if you decide to port them down the road sometime they will be a much better choice than stock ported heads, I sold my stock ported heads for a set of these to lower the compression and mine are as cast...but I plan on upgrading in the future.

 

Absolutely.

 

SO what do you think ill net with basic suspension mods and the turbo set at 10lbs I was searching and read that a guy went low 11's on a stock motor with a 6 speed and this turbo.

 

anyone?