Hi folks i need help. Bought a 89 302 mustang . has trick flow intake twisted wedge heads 24 lb injectors a 70mm throttle body 76mm c&l tube onit . throttle body is oxidied and pitted up can i change it to a 75mm or stay with the 70mm
I would stick with a 70mm with your set up. Maintains more velocity, which actually makes more power than a bigger opening. Something else to think about is the size of the TB blade inside. The bigger the blade the more “on/off” your throttle will be. A smaller blade gives you smoother throttle transitioning.