tb question

[mikeyzx6r]

ok im in the process of rebulding my 302 and for temporary use im going to use my stock upper and lower intake i wanna run a 75mm throttle body on the stock intake manifold until i buy a trickflow or holly so im wondering if a bigger throttle body will fit on my stock intake manifold?

 

[jrichker]

ok im in the process of rebulding my 302 and for temporary use im going to use my stock upper and lower intake i wanna run a 75mm throttle body on the stock intake manifold until i buy a trickflow or holly so im wondering if a bigger throttle body will fit on my stock intake manifold?

It will not fit properly without a larger EGR/TB spacer. You will need to remove the upper intake manifold and have the TB opening enlarged to match the TB & EGR/TB spacer opening. In order to get the most benefit out of a larger TB, the opening downstream from it must be the same size as the TB opening measured at the TB flange.