90mm throttle body. Need new manifold?
02-26-2010, 05:15 PM
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90mm throttle body. Need new manifold? If i want to go with a larger throttle body, do i need to change the upper manifold as well? what kind of performance can i expect with a 90mm? Thanks
02-26-2010, 06:12 PM
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A 90mm throttle body will not fit the stock manifold. Upgrading the tb won't do much for you anyway if it has to neck back down to the stock size inlet. What mods do you have?
02-26-2010, 07:32 PM
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I would look elsewhere for your next mod. A 90mm intake manifold won't do a lot of good unless you are at least cammed. If you have a 2001-up f-body you already have the LS6 intake which is pretty good.
