Originally posted by ZDriver96
And for all the peeps reading this who are assuming that a bigger throttle body will give there car more power because it allows more air flow you have to first look at the cubic inches of your engine (or take forced induction into account). You have to find out volumetric efficiency at your max rpm for your engine size with what ever TB your using. For instance on the 350 example in the article.. 350 cube motors can rev to 7000rpm equaling a 465hp potential at 730cfm air flow through the Throttlebody. Does mean your going to get 465hp.. It means it will ALLOW 465hp.
Same with exhaust.. It doesnt give horsepower. It ALLOWS it.
Stuff like throttle bodies and exhausts will CHANGE VE and such.
Throttle bodies also, FWIW, should be sized accordingly to the intake manifold volume, vs the runner length.