What diameter is the stock TB on my LS1?
Seeing all these ads for intake upgrades... talking about FAST 90, FAST 92, etc... am now wondering exactly what the stocker measures, if I wanted to get a new intake manifold, but not sure about getting a new TB.
(Trying to make this a better C5 Section by asking questions I know would be answered in 30 seconds flat elsewhere
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::: crickets :::