9165pt0

hey guys whats a better choice a 65mm t/b or a 70 mm. the rest of the set up is, gt40 intake, gt40 cast iron heads, 76mm maf, e303 cam. would the 70mm be too much or are those enough mods for it? ps im still going to run the stock 19 lb injectors

PJB

Ive got a 70mm on mine and for right now its just got an intake with stock heads and a cam (new heads are on their way) and it runs fine.
With your mods a 70mm will be fine.

crazyhorse

65 would be good also.

5.0liter_rice_eater

they say that the 65 will preserve your low end torque for now until you open that engine up a little with some decent heads.

LIL D

how do you like your setup mine will be similar to that i was recommended to use a 65mm tbody but what if you have ported gt40s will a 65mm still be good

stang8689

Gt-40 intake has a 70mm throttle body opening If you want a 65 get the Cobra

[IMG]local://upfiles/57696/D03B736FAF5D4362A26EC159354BB7A8.jpg[/IMG]

gspfunk

If you're getting aftermarket heads, the 70 may be a better choice, depending on what other future mods you'll have.... If you'll have the GT40's for a while, 65 would be the better choice (assuming they're stock, not ported).

OnyxCobra

I'd probably go with the 70mm.