COMP Cams CL11-564-4 Nitrous HP Hydraulic Flat Cam & Lifter Kit for Chevy BBC 396-454

The COMP Cams CL11-564-4 Nitrous HP camshaft and lifter kit is engineered specifically for nitrous oxide-equipped big block Chevrolet engines from 396 to 454 cubic inches. This complete kit delivers aggressive performance with a 230/244 duration split designed to maximize power under nitrous injection while maintaining strong naturally aspirated performance.

Camshaft Specifications:

• Advertised Duration: 280°/288° intake/exhaust
• Duration at .050": 230°/244° intake/exhaust
• Valve Lift: .510"/.540" intake/exhaust (with 1.7:1 rocker ratio)
• Lobe Separation Angle: 110°
• Hydraulic flat tappet design for excellent street manners
• Optimized for nitrous oxide systems up to 250 HP

Complete Kit Includes:

• Hydraulic flat tappet camshaft
• Assembly lube for proper break-in
• Installation instructions
• COMP Cams decals

This camshaft works best with 9.5:1 to 11:1 compression ratios and produces a strong idle with excellent throttle response. The split duration pattern helps scavenge cylinders effectively under nitrous load while the hydraulic design eliminates the need for valve lash adjustments. Ideal for street/strip applications running periodic nitrous injection.

Recommended Components: Requires upgraded valve springs (not included), performance pushrods, and 1.7:1 or higher rocker arms to achieve advertised lift specifications.