COMP Cams K12-207-3 Dual Energy 255H Hydraulic Flat Tappet Cam K-Kit for Chevrolet Small Block

The COMP Cams K12-207-3 is a complete Dual Energy 255H Hydraulic Flat Tappet Cam K-Kit engineered for Chevrolet Small Block 262-400 c.i.d. engines. This kit delivers everything needed for a full camshaft upgrade in one package, including the camshaft, hydraulic flat tappet lifters, valve springs, retainers, locks, seals, and timing set.

The Dual Energy grind uses a split-profile design, featuring more exhaust duration and lift than the intake side. This unique approach is engineered to overcome the flow limitations of restrictive stock exhaust manifolds and systems, unlocking mid-range and upper RPM horsepower that would otherwise be choked off. The result is a noticeable improvement in mid and upper RPM power output while maintaining a streetable idle quality.

With an RPM operating range of 1,200–5,500 RPM, this cam is well-suited to daily-driven street builds where a stock or mildly modified exhaust system is retained. The idle remains smooth enough to support power accessories such as power brakes, power steering, and air conditioning without issue.

Camshaft Specifications:

• Camshaft Type: Hydraulic Flat Tappet
• Advertised Duration: 255° Intake / 261° Exhaust
• Valve Lift (w/ 1.5:1 Rockers): 0.421" Intake / 0.451" Exhaust
• Lobe Separation Angle: 110°
• RPM Operating Range: 1,200–5,500 RPM
• Application: Chevrolet Small Block 262-400 c.i.d.

K-Kit Includes:

• Hydraulic flat tappet camshaft
• Hydraulic flat tappet lifters
• Valve springs
• Retainers and locks
• Valve seals
• Timing set

The Dual Energy cam series is an excellent choice for stock or near-stock small block Chevy builds where exhaust flow is a limiting factor. The additional exhaust duration compensates for restrictive OEM exhaust, making this a practical street performance upgrade that requires no major supporting modifications to deliver results.