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Comp Cams Part Number 12-423-8 is an Xtreme Energy 224/230 hydraulic roller camshaft designed for Chevrolet Small Block 262–400 engines (1958–1998). Built for high-performance street applications, this camshaft delivers strong torque, excellent throttle response, and improved vacuum while maintaining a choppy performance idle. Works best with supporting modifications including a 2000+ stall converter, aftermarket intake, gears, and headers.
Xtreme Energy camshafts bridge the gap between traditional street cams and race-only profiles by offering quicker lobe designs for enhanced torque, throttle response, and efficiency without sacrificing valve train durability.
Xtreme Energy series for strong street performance
Hydraulic roller camshaft
Choppy performance idle
Enhanced torque and responsiveness
Increased vacuum for better drivability
Works best with COMP roller rockers and matched springs
Requires supporting performance components for optimal results
3-bolt cam gear attachment
| Specification | Value |
|---|---|
| Camshaft Type | Hydraulic Roller |
| Series | Xtreme Energy |
| Engine Family | Chevrolet 262–400 c.i. (1958–1998) |
| RPM Range | 1,900–5,600 |
| Advertised Duration (Int/Exh) | 276 / 282 |
| Duration @ .050" (Int/Exh) | 224 / 230 |
| Valve Lift (Int/Exh) | 0.502 / 0.510 |
| Lobe Separation Angle | 110° |
| Intake Open (BTDC) | 32° |
| Intake Close (ABDC) | 64° |
| Exhaust Open (BBDC) | 75° |
| Exhaust Close (ATDC) | 27° |
| Valve Timing @ .006" | Not specified |
| Gear Attachment | 3-Bolt |
| Usage | Street/Performance |
| Lifter Type | Hydraulic Roller |
| Warranty | 12 Months |
| UPC | 036584025160 |
| Emissions Code | Not specified |
| California Proposition 65 | Cancer and Reproductive Harm (P65Warnings.ca.gov) |
Make: Chevrolet
Engine Family: 262–400 c.i. Small Block V8
Model Years: 1958–1998
Cam Gear Style: 3-bolt
