Iowa Chapter Director
Join Date: Jul 2002
Location: Ames, Iowa
well I usually go over everything with a flapper wheels, which makes a somewhat smooth, but slightly rough surface. This is said to be the best finish for porting, as I've heard from several pros.
It is beneficial to port as far as you can reach with a dremel, the gain isnt really from removing meterial, just smoothing out the casting flashes and making that rough surface (Which flows better than smooth). There's probably a 10hp gain from doing just that.
1988 Notch Mustang: - 438W, direct port n2o, t56
2003 SVT Focus: - SCT X3 tuner