Does anyone know where i can buy a ported and polished throttle body for my 3500 v6? Also what kind of gains would i be seeing with one.

 

I would say probably your best bet would be having a machine shop do it to yours you have now. The aftermarket on 3500s are slim and I wouldn't think you would gain much honestly. You would be better off trying to find a bigger throttle body that would bolt right up probably.

 

Im not much of an expert on this. What do you think would work that could fit easily?

 

I am unsure. It is drive by cable right? best bet would be to research other DBC gm cars and see if something might fit that is a little bigger. My stock throttle body on my ls4 is junk it is far too small.