Thottle body question?


Founding Member
Sep 25, 2002
Ravena, NY
On a 90mm TB is the mounting holes the same as those of a 75mm. So basically if an intake manifold is made to accept a 90mm TB can I bolt up a 75mm TB for the time being or do I need to use a 90mm.
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It will bolt right up. The bolt pattern location is the same.

The intake opening is nothing more than the "casted out " diameter, it is not a reason to choose throttle body size or application.