COMP Cams 08-417-8 - CamShaft, CS XM 270HR-12

COMP Cams Xtreme Marine XM 270HR-12 Camshaft for Small Block Chevrolet Engines Originally Equipped with Hydraulic Roller Cams Hydraulic Roller - Xtreme Marine: Largest for inboard/outboard, very good mid-range. Hydraulic Roller - Xtreme Marine: Largest for inboard/outboard, very good mid-range.; 270/276 Advertised Duration, 218/224 Duration .050", .495"/.503" Lift, 112 Lobe Separation; 1200 to 5200 RPM range; Valve spring upgrade required; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump