I have a Cartek ported LS6 intake with ported stock TB and 85mm TB. I am contemplating doing heads on my cam only Lq9 and am wondering how much of a gain I would potentially see with going to a FAST 90mm or bigger over my ported LS6?? I have seen pleanty of LS6 to FAST comparisons, but not Ported LS6 to FAST.

thanks!

 

Porting an LS6 doesnt really do anything so I imagine the gains would be similar to going from a stock LS6 intake to the FAST. Maybe a couple hp less.