Overview Reviews Product Description Camshaft - Xtreme Energy - Hydraulic Flat Tappet - Lift 0.520 / 0.523 in - Duration 274 / 286 - 110 LSA - 1800 / 6000 RPM - Oldsmobile V8 - Each Product Videos Custom Field Product Reviews Write a Review Write a Review × COMP CAMS COMP CAMS Olds V8 Xtreme Hyd. Cam XE274H-10 COM42-224-4 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *