COMP Cams 01-775-8 - CamShaft, CBVI XR271HR-12

COMP Cams Xtreme Energy Computer Controlled XR271HR-12 Camshaft for Gen VI Big Block Chevy Hydraulic Roller - Xtreme Energy Computer Controlled: Works well with ported heads, serious valve train upgrade required, needs 2200+ stall. Hydraulic Roller - Xtreme Energy Computer Controlled: Works well with ported heads, serious valve train upgrade required, needs 2200+ stall.; 271/279 Advertised Duration, 224/232 Duration .050", .591"/.601" Lift, 112 Lobe Separation; Adjustable valve train required; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;