COMP Cams 08-408-8 - CamShaft, CS XR258HR-10

COMP Cams Xtreme Energy XR 258HR-10 Camshaft for Small Block Chevrolet Carbureted Engines Originally Equipped with Hydraulic Roller Cams Hydraulic Roller - Xtreme Energy: Strong torque, good mileage. Stock to mildly modified combinations. Hydraulic Roller - Xtreme Energy: Strong torque, good mileage. Stock to mildly modified combinations.; 258/264 Advertised Duration, 206/212 Duration .050", .480"/.487" Lift, 110 Lobe Separation; 1000 to 5000 RPM range; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;