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Comp Cams Part Number 11-422-8 is an Xtreme Energy 218/224 hydraulic roller camshaft designed for Chevrolet Big Block 396–454 engines (1967–1996). Built for street/performance use, this cam delivers improved low- and mid-range torque, crisp throttle response, and a noticeable performance idle, all while maintaining excellent drivability in big block applications. Operates effectively within a 1,600–5,400 RPM range.
Xtreme Energy series hydraulic roller camshaft
Strong low- and mid-range performance
Ideal upgrade for street-driven big block Chevy builds
Noticeable idle with good overall drivability
3-bolt camshaft gear attachment
Suited for 396–454 c.i. engine platforms
| Specification | Value |
|---|---|
| Camshaft Type | Hydraulic Roller |
| Series | Xtreme Energy |
| Engine Family | Chevrolet 396–454 c.i. (1967–1996) |
| RPM Range | 1,600–5,400 |
| Advertised Duration (Int/Exh) | 270 / 276 |
| Duration @ .050" (Int/Exh) | 218 / 224 |
| Valve Lift (Int/Exh) | 0.510 / 0.510 |
| Lobe Separation Angle | 110° |
| Intake Open (BTDC) | 29° |
| Intake Close (ABDC) | 61° |
| Exhaust Open (BBDC) | 72° |
| Exhaust Close (ATDC) | 24° |
| Valve Timing @ .006" | Not specified |
| Gear Attachment | 3-Bolt |
| Usage | Street/Performance |
| Lifter Type | Hydraulic Roller |
| Warranty | 12 Months |
| UPC | 036584024835 |
| Emissions Code | Not specified |
| Make | Chevrolet |
| California Proposition 65 | Cancer and Reproductive Harm (P65Warnings.ca.gov) |
Make: Chevrolet
Engine Family: 396 / 402 / 427 / 454 c.i. Big Block V8
Model Years: 1967–1996
Cam Gear Style: 3-bolt
