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Stock LS3 intake manifold

2K views 3 replies 3 participants last post by  Vega$69 
#1 ·
Hey guys, I am away from my car and I'm wondering if anybody knows the bore diameter of the stock intake where the throttle body connects, I know the throttle body is 90mm but what is the intake, also I guess I'm asking can I go to a 102mm TB or is the intake diameter smaller then that and I would have to change intake thanks :wink2:
 
#4 ·
There are no intakes for LS3 that out perform the stock intake.

A larger throttlebody will do virtually nothing to help you with power

you can port The original throttlebody and pick up a little bit but it's probably not worth it
 
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