COMP Cams SK12-209-3 Dual Energy Hydraulic Flat Tappet Camshaft Kit for Chevy Small Block - 275H 262-400

The COMP Cams SK12-209-3 Dual Energy 275H Hydraulic Flat Tappet SK-Kit is engineered for Chevrolet Small Block engines (262–400 cubic inches) that need to overcome the limitations of restrictive stock exhaust systems. This complete SK-Kit includes the camshaft and matching valve timing components, making it a straightforward upgrade for enthusiasts seeking improved mid-range and top-end power.

The Dual Energy grind is the defining characteristic of this camshaft. Unlike symmetrical grinds, it features more exhaust duration and lift than the intake. This asymmetric profile is intentionally designed to push exhaust gases out more efficiently, compensating for the flow restrictions common in factory exhaust manifolds and stock exhaust systems. The result is stronger mid-range and upper RPM performance, with only a modest trade-off in low-end torque.

Key Features:

• Dual Energy grind with increased exhaust duration and lift over intake for improved scavenging
• Hydraulic flat tappet design — quiet operation and no periodic valve adjustment required
• Optimized for stock or mildly modified small block Chevy engines with restrictive exhaust
• Delivers increased mid and upper RPM power band
• SK-Kit format includes camshaft and timing components for a complete installation
• Compatible with Chevrolet Small Block 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 cubic inch engines

The 275H specification refers to the hydraulic flat tappet profile with approximately 275 degrees of advertised duration, delivering a noticeable performance improvement while remaining streetable. This makes the SK12-209-3 an excellent choice for daily drivers, trucks, and street/strip vehicles running factory or near-stock exhaust configurations where maximizing available airflow is critical to performance.