Throttle Body Size?

[bumblebee03]

My current combo is a 347ci with a S-Trim pushing 10-14 lbs of boost depending on conditions, 42lb injectors and a Comp blower cam, FPS 200cc runner lenght heads, Edel RPM Performer intake. The car put down 510rwhp and 510rwtq. I currently have a 65mm TB on the car, but have been wondering if a larger 70mm or 75mm TB would give any increase in performance, any input is appreciated, Lee

[COPTZR]

anyone have some input on this? about to build same combo, would like to know which t.b. and egr size to start with.

[bumblebee03]

I called Accufab,, George recommended a 75mm TB.... I spent my money on a sumped tank, Eaton 31 spline diff and Strange Axles,,, so the new TB is out for now... Lee

[BLOWNBY]

Not sure if it will really make much difference.....

I have ran 24 psi through a 75mm TB if this helps.....I would imagine a larger one would benefit me but how much HP??? probably not much!

So if you have the money a bigger one would be in order but not necassary I'd say!