A

I remember reading somewhere (I think it was at camaroz28.com's thirdgen section) that a bigger throttle body would actually hurt low end power.
True or untrue?

Nathan Plemons

It depends on your motor. Stock motors can't turn fast enough to use the extra airflow from a larger throttle body. The result is you are sucking as much air as the engine possibly can by like 75% throttle, making the last 25% of the pedal useless.

A stock or mildly modified motor can usually go to a 52mm and it will help performance. It takes a more serious mods to really be able to take advantage of a 58mm.

scorp508

Without touching anything else, yeah it'll mess it up. You will end up cutting down on the velocity of the air going into the plenum, killing torque.