Have a 65mm TB with Cobra intake, recommend 70mm TB or ???

[Totalpkg]

I wanna match the TB to the intake, but if its not gonna make a huge difference then I won't. Thankx.

[speedytang]

Purchase a 70mm when you get 8psi+ till then the 65mm will probably show the same H.P. till the 6k rpm and above range.

[Totalpkg]

I'm seeing 11psi without the powerpipe installed. I have a a 3" makeshift power pipe but I had to stretch the Vortech connector to fit the T-trim blower opening. I should be able to get more boost with the pipe and the fact that my belt is not tensioned as tight as possible. Its tight but I got about 1/4"-1/2" play in it, I think.

I think the TB may be a little bit of a bottle neck.

Purchase a 70mm when you get 8psi+ till then the 65mm will probably show the same H.P. till the 6k rpm and above range.

[frdfandc]

The 65mm T-body is plenty for your combo. Untill you are making well over 500 rwhp with high flow heads and intake, you won't need the 70mm unit.

[Totalpkg]

I got GT-40 irons and a Cobra intake. I really should get the car dynoed...