S&S Cycle - CNC Head Porting with Wally Cahill - Part 1 of 3
Justin Bramstedt tells Wally Cahill how the port shape for the S&S CNC porting service for 1999-up Harley-Davidson® big twins was developed. He talks about keeping the port velocity high while maintaining CFM. Let S&S port your stock heads for an increase of 10 to 15 horsepower.
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