The COMP Cams CS 270H camshaft kit is designed for high-performance applications on Chevrolet Gen 1 Small Block engines, including models from 262 to 400 cubic inches. This comprehensive kit includes a durable camshaft, lifters, valve springs, retainers, valve locks, valve stem seals, a timing chain set, assembly lube for flat tappet applications, decals, and detailed instructions. Engineered to deliver a mild rough idle with significant power gains, this kit is ideal for enthusiasts seeking enhanced performance without extensive modifications.
The CS 270H provides a substantial upgrade over stock cams, especially when paired with a stall converter above 2000 RPM and lower gear ratios. It is compatible with a wide range of Chevrolet small blocks manufactured before the mid-1980s, excluding LT1, LT4, and later roller cam engines. To ensure proper fitment, remove the intake or timing cover to verify whether the engine block is a factory flat tappet or roller design. This kit does not fit LS-based engines, including LS1, LS2, LS3, or any variants like the 4.8, 5.3, 5.7, 6.0, and 6.2-liter engines.
Please note that engines from 1955-1957 with a 265 cubic inch displacement require a groove on the fifth cam journal for proper oiling. For detailed compatibility and installation guidance, contact our support team. The CS 270H camshaft kit is a reliable choice for restoring or upgrading classic Chevy small blocks, delivering performance improvements suitable for street and mild racing applications. The kit complies with Prop 65 regulations and is intended for off-road use only, requiring acknowledgment of carburetor restrictions during installation.
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