COMP Cams Camshafts 54-103-11 FSL 210/218 Hydraulic Roller Cam for GM LS GEN III/IV First 50-state legal grind for the GM Gen III LS1/LS3 three-bolt family of engines. Drop-in with stock components and tune can produce 30 to 90 HP increase in peak COMP Cams Camshaft Chevrolet/GM LS1 & LS6 FSL Series