COMP Cams 01-451-8 - CamShaft, CBVI XM284HR-12

COMP Cams Xtreme Marine XM284HR-12 Camshaft for Gen VI Big Block Chevy Hydraulic Roller - Xtreme Marine: Good for jet boat with A impeller. Great for pleasure or mild performance use. Hydraulic Roller - Xtreme Marine: Good for jet boat with A impeller. Great for pleasure or mild performance use.; 284/290 Advertised Duration, 230/236 Duration .050", .547"/.547" Lift, 112 Lobe Separation; Adjustable valve train required; Must use bronze tip fuel pump pushrod when using high pressure or high volume pump;