COMP Cams CL12-209-3 Dual Energy 275H Hydraulic Flat Tappet Cam and Lifter Kit for Chevy Small Block 262-400

The COMP Cams CL12-209-3 Dual Energy 275H is a hydraulic flat tappet camshaft and lifter kit engineered for Chevrolet small block engines. Unlike symmetrical grinds, the Dual Energy profile features more exhaust duration and lift than the intake, a design strategy aimed at overcoming the power-robbing effects of restrictive factory exhaust systems. The result is stronger mid-range and upper-RPM power output with minimal sacrifice at the low end.

With an operating RPM range of 2,000–6,000, this cam is well-suited for high-performance street builds and weekend performance vehicles that need a broad, usable power band. It is compatible with a stock torque converter, making it a practical upgrade for driver-quality street machines. Note that upgraded valve springs are required for proper installation.

Key Specifications:

• Camshaft Series: Dual Energy
• Grind Number: 275DEH
• Cam Type: Hydraulic Flat Tappet
• Advertised Intake Duration: 275°
• Advertised Exhaust Duration: 277°
• Duration at .050" Lift – Intake: 219°
• Duration at .050" Lift – Exhaust: 229°
• Intake Valve Lift: 0.462"
• Exhaust Valve Lift: 0.482"
• Lobe Separation Angle: 110°
• Camshaft Material: Cast Iron
• Camshaft Gear Attachment: 3-Bolt
• Engine Family: Chevrolet 262–400 c.i. V8 (1958–1998)
• Basic Operating RPM Range: 2,000–6,000

Kit Contents and Notes:

• Includes hydraulic flat tappet lifters and assembly lubricant
• Valve springs not included — upgrade required
• Works with stock torque converter
• 3-bolt camshaft gear attachment
• Produces a choppy, performance-style idle

COMP Cams manufactures all camshafts to strict tolerances with rigorous quality inspection. The CL12-209-3 is an ideal choice for enthusiasts seeking increased mid-to-upper RPM power from a stock or mildly modified small block Chevy without replacing the torque converter or making major drivetrain changes.