BBC Cam&Lifter Kit 270H (Hyd Lifter #812-16)

The COMP Cams BBC Camshaft and Lifter Kit 270H (Hyd Lifter #812-16) is a complete hydraulic flat tappet camshaft and lifter assembly designed specifically for big block Chevrolet engines. This kit pairs a precision-ground 270-degree duration camshaft with hydraulic roller lifters, delivering reliable valve actuation across the engine's operating range from 1500 to 5800 RPM. The matched components eliminate compatibility guesswork and provide a ready-to-install solution for engine builders and restorers targeting moderate performance gains without sacrificing streetability.

The 270-degree duration specification on both intake and exhaust lobes with a 110-degree lobe separation angle produces 0.510-inch lift per cylinder. This symmetrical profile generates consistent power band characteristics and supports efficient scavenging across mid-range RPM where most street and light performance applications operate. The hydraulic lifter design automatically compensates for thermal expansion and mechanical wear, eliminating the need for manual valve lash adjustment and reducing maintenance complexity. The #812-16 hydraulic lifter assembly is engineered to work within OEM pushrod geometry while providing enhanced reliability compared to worn solid tappet configurations.

This kit addresses the needs of big block Chevy engine builders restoring original muscle cars, upgrading tired stroker builds, or assembling turnkey performance packages where proven component compatibility matters. The moderate 270-degree duration and hydraulic actuation make this choice ideal for applications prioritizing idle quality and drivability over extreme high-RPM performance. Street rods, trucks, and vintage Chevrolet restorations benefit from the balanced torque curve this specification delivers without requiring upgraded valve springs, rocker arms, or extensive cylinder head porting.

COMP Cams maintains extensive experience in big block Chevrolet applications, and this 270H configuration represents a proven middle ground between stock and aggressive street performance. The kit ships as a complete, matched assembly—camshaft and lifter set pre-selected for proper clearance and operation. This eliminates fitment risk and ensures the hydraulic lifters will function within design parameters immediately upon installation.