which throttle body/mass air?
 

Hi guys,
I need some advice on what size throttle body and mass air meter to go with. My car has BBK equal length shorties,BBk crossover pipe with high flow cats,flowmaster cat back system,mac cold air intake, and 3.55 gears.I am looking at the Pro M 75mm mass air, but not sure which throttle body. Will a 65mm be too small with aftermarket cam,intake and heads? I plan on installing these eventually. Will a 70mm be too big with out these mods? Any info would be greatly appreciated.

Re: which throttle body/mass air?
 

Back when I had stock heads and intake I bought a 65mm TB. Now that I have some good heads/cam/intake I wish I had a 70mm TB.

If I had it to do over again I would start out with a 70mm TB.

Re: which throttle body/mass air?
 

a 65mm TB is good to 450 hp.

I'd got with a 65mm TB and the 75MM Pro-M

Re: which throttle body/mass air?
 

There won't be any significant power difference between a 65 or 70mm TB - buy the best one you find the cheapest.

Re: which throttle body/mass air?
 

get a 75, despite what you will read in the magazines and hear from other mis-informed people, you really can't go too big with the throttle body. Its not a carburetor

Re: which throttle body/mass air?
 

I doubt your intake will take a 75mm without porting and a 65-70mm will likely be more than you need and cheaper to buy.

Re: which throttle body/mass air?
 

Thanks for the input guys!