LS6 intake question ?
u can see my mods on my sig.

thanx
since the stock opening is 75mm....there is very little to be gained from putting a 90mm throttle body on.
unless the intake manifold is modified like TPIS does.
basically you're fine with a ported stock throttle body.
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while some places machine the bore bigger, you then have to put a bigger blade in.





