631 Cam

S&S Cams are tested on the dyno, street and track before being offered to the publicWith hundreds of hours of testing on each cam, you know you are getting the best cam S&S can produceMakes best power from 4500 rpm and upWorks with solid or hydraulic tappetsRequires high-lift springsFor all high-compression engines 11:1 and up compressionInstaller must check coil bind, valve-to-valve clearance, valve-to-piston clearance and cam lobe to case clearance.Made in the U.S.A.