BBC Cam & Lifter Kit 260H (Hyd Lifter #812-16

The COMP Cams BBC Cam & Lifter Kit 260H with Hydraulic Flat Tappet Lifters (#812-16) is a complete camshaft and lifter assembly engineered for big block Chevy engines seeking a mid-range solid performance profile. This kit delivers 0.475 inches of lift on both intake and exhaust, with a 260-degree duration specification and a 110-degree lobe separation angle (LSA). The combination establishes an operating range from 1200 to 5200 RPM, making it suited for street and light performance applications where drivability and fuel economy balance against increased power output.

The hydraulic flat tappet design uses self-adjusting lifters that automatically maintain zero valve lash as the engine runs, eliminating the need for manual valve clearance adjustment. This design reduces valve train noise and extends component life by minimizing wear on rocker arms and pushrods. The 260-degree duration at both intake and exhaust means symmetrical valve events, providing predictable combustion characteristics and smoother idle quality compared to wild, high-duration profiles. The 110-degree LSA provides overlap that encourages scavenging without excessive overlap-induced losses, a critical balance for street-driven big block engines.

This kit is intended for engine builders and enthusiasts upgrading stock or mildly modified big block Chevy powerplants. The 260H profile sits in the sweet spot for engines running stock or mildly ported heads, carbureted or port-injected fuel systems, and cast iron or aluminum blocks. The 1200–5200 RPM power band makes this cam responsive in cruising situations while maintaining usability without extensive internal modifications. Installation requires attention to proper timing set and lifter preload specifications, and lifter-to-bore clearance verification is essential for reliable operation.