70mm throttle body big enough for my supercharged GT?
 

Just got back from Fun Ford Weekend Here in Houston and picked up a new 70mm throttle body for $160. Should I have gotten a 75mm. I'm only pushing about 7 psi now but plan on bumping it up to 11 pounds soon. Anybody out there know if 70mm is enough, or is it the bigger the better. Also plan on getting an 80mm m/f next week. Is this big enough for what I plan to do???
Help me out guy's.

An 80mm MAF and 70mm Throttle body will be fine for your application. 75 would also work, but 70 will do just as well as long as you're not making 500+hp.

With 7 PSI it should be fine but with 11 PSI your goning to want the bigger T-Body. Go with 75 mm and th 80mm C&L. That will be a good combo for your engine.

Just talked to the guy who installed it (Maybe wasted my money??)
 

The guy here are the shop that installed my Supercharger says that I shouldn't need to replace my T/B. He says that he has always ran the stock ones on supercharged applications because there is no real horsepower increase. He said that I should have spent my money on a powerpipe instead. (good for 3 extra PSI). What do you guys think??

I'm not so sure I agree with the guy because yes it's true you won't gain any power from a t-body on a stock engine but on a blown application such as yours you should gain a fair amount of power. A solution to this decision is just buy both!:cool: