Porting SB Chevy VORTEC heads for real pro results

The internet is flooded with would be head porters showing how they port the SB Chevy Vortec heads. Most give very poor to even negative advice. Here race engine development engineer and university lecturer David Vizard gives you the low down of what does and dose not work with these already well developed heads. Here you get the real low down on porting these heads - all done with advanced flow bench testing.