COMP Cams K11-564-4 Nitrous HP Hydraulic Flat Tappet Camshaft Complete Kit for Chevy Big Block 396-454

The COMP Cams K11-564-4 Nitrous HP Camshaft Kit is specifically engineered for Chevrolet Big Block 396-454 cubic inch engines running a 100-150 horsepower nitrous oxide system or small supercharger. This complete K-Kit delivers everything needed for a professional camshaft upgrade designed to maximize power gains from forced induction applications.

Performance Specifications:

• Hydraulic flat tappet design with CB NX274H grind profile
• Advertised duration: 274° intake / 292° exhaust
• Duration at .050" lift: 230° intake / 244° exhaust
• Valve lift with factory rockers: .553" intake / .568" exhaust
• Lobe separation angle: 113 degrees
• Operating RPM range: 2,000-6,500 RPM
• Requires 2,500 RPM stall converter

Complete K-Kit Includes:

• Cast iron camshaft with 3-bolt gear attachment
• Hydraulic flat tappet lifters
• High-performance valve springs (1.509" OD outer spring)
• Valve spring retainers and locks
• Valve stem seals
• Double non-roller timing chain set
• Assembly lubricant
• Installation instructions and decals

Key Features and Benefits:

• Unique intake cam lobes optimize cylinder filling for more complete combustion when using nitrous
• Spread exhaust lobes reduce overlap and maximize combustion chamber scavenging
• Wider lobe separation and increased exhaust duration shift power band to higher RPM for nitrous applications
• Early exhaust opening efficiently evacuates spent gases from forced induction
• Maintains excellent throttle response and torque for street driving
• Manufactured to strict tolerances and rigorously quality tested

Designed for street/strip use on 1965-1996 Chevrolet Big Block Mark IV engines including 396, 402, 427, 454, 496, 502, 572, and 632 cubic inch applications. Ideal for Chevelle, Corvette, Camaro, Monte Carlo, Caprice, and truck applications. Note: Camshaft does not feature oiling groove in rear journal for 1965-66 models.