COMP Cams 54-446-11 - CAMSHAFT, LS1 XER281HR-12

CAMSHAFT, LS1 XER281HR-12 HYDRAULIC ROLLER - XFI XE-R: XTREME ENERGY XE-R DESIGN FOR STANDARD DISPLACEMENT LS6 AND LS1. RACE ONLY APPLICATIONS. CUSTOM TUNING REQUIRED. 281/283 ADVERTISED DURATION, 232/234 DURATION @ .050", .595"/.598" LIFT, 112 LOBE SEPARATION USE DUAL VALVE SPRING PART #26925-16 WITH THIS CAMSHAFT COMP Cams XFI XE-R XER281HR-12 Camshaft for LS Gen III/IV, Three-Bolt HYDRAULIC ROLLER - XFI XE-R: Xtreme Energy XE-R design for standard displacement LS6 and LS1. Race only applications. Custom tuning required.