COMP Cams 07-503-8 - CamShaft, LT1 XR276HR-12

COMP Cams Xtreme Energy XE276HR-12 Camshaft for LT1 Chevy Hydraulic Roller - Xtreme Energy: Best cam for modified LT1, better exhaust and 2000+ converter. Requires custom tuning. Hydraulic Roller - Xtreme Energy: Best cam for modified LT1, better exhaust and 2000+ converter. Requires custom tuning.; 276/281 Advertised Duration, 224/230 Duration .050", .503"/.510" Lift, 112 Lobe Separation; 1800 to 5800 RPM range; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;