Throttle Body Size

[Sean B]

Hello everyone , looking for advice. I have a 1992 5.0 gt. I had a comp cam with .512 lift put in,flo-tek aluminum head 180cc/58cc and a gt-40 intake. My question is, what size throttlebody, MAF,and injectors should I use? Thanks.

 

[Steel1]

I'm not sure what size the TB opening is on the GT40 intake but I would say for an n/a street car.
70MM Maf
65MM TB
24lb. injectors
Obviously if your planning on boosting it injectors etc. would change.
Also upgrade fuel pump if you haven't already.

 

[cleanLX]

GT40 "series" of intakes have 69mm-70mm TB throat.
So, TB 65mm or 70mm , MAM 70mm to 76mm... I doubt larger would hurt but the 70/76 will fit the stock air box.

 

[95BlueStallion]

I agree with 65 MM throttle body, 24 lb injectors, and I recommend a 75mm Pro M MAF. A 70 MM TB would work, but the bigger you go the more your throttle responds tends to suffer slightly.

 

[mikestang63]

if it were my car I'd find a 70MM MAF from a 94-95 GT and a 65MM TB from an Explorer and call it a day. You will need to do a little fab work to get them to work on the fox body but for under $100 you are set, I would leave the 19# injectos as you are not setting the world on fire with that combo