COMP Cams 01-405-8 - CamShaft, CBVI XR252HR-10

COMP Cams Xtreme Energy XE252HR-10 Camshaft for Gen VI Big Block Chevy Hydraulic Roller - Xtreme Energy: Very strong low speed torque with excellent mileage. Hydraulic Roller - Xtreme Energy: Very strong low speed torque with excellent mileage.; 252/258 Advertised Duration, 200/206 Duration .050", .510"/.510" Lift, 110 Lobe Separation; Adjustable valve train required; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;