Cam - 508 Series - Big TwinCaracteristicas: S&S Cams are tested on the dyno, street and track before being offered to the public With hundreds of hours of testing on each cam, you know you are getting the best cam S&S can produce Provides best power in low to mid range S&S' best bolt in cam Works well in all size motors up to 10: 1 compression Quiet valve train Made in the U. S. A. Installer must check coil bind, valve to valve clearance, valve to piston clearance and cam lobe