Best/Largest throttlebody for an LS6 intake?
I cant port mine out as I dont have the tools.
Porting won't make your TB bigger, it will remain at 78mm (I think, if not it's 75mm can't remember off the top off my head). But it will open up the opening of the TB, this will imporve air flow and is worth a reasonable amount of HP, even more so when you consider the cost.
TPIS offer a 90mm round and a 90mm oval TB for the LS6 intake, but the manifold also needs to be modified. Personally I don't think you can beat a STOCK ported TB, many people have made BIG bhp using them.
http://www.neweraperformanceparts.com/default.asp?S=503&A=E&PKV=tbportcf|0








