Bigger TB = more power?

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Nov 9, 2001 | 11:18 AM

Thread Starter

Melting Slicks

Joined: Sep 2000

Posts: 2,683

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Bigger TB = more power?

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?

Nov 9, 2001 | 11:21 AM

Nathan Plemons

Race Director

Joined: May 2001

Posts: 14,165

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Re: Bigger TB = more power? (A)

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.

Nov 9, 2001 | 11:29 AM

scorp508

Team Owner

Joined: Mar 2000

Posts: 83,383

Likes: 87

From: Boston, MA

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.

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