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Comp Cams Part Number 51-224-4 is an Xtreme Energy 230/236 hydraulic flat tappet camshaft designed for Pontiac 265–455 V8 engines (1955–1981). Built for high-performance street applications, this cam delivers very strong mid-range power, a performance-oriented idle, and excellent throttle response. Recommended for combinations using headers and a 2200+ stall converter.
Xtreme Energy series hydraulic flat tappet camshaft
Strong midrange power and crisp throttle response
Ideal for high-performance street Pontiac builds
Works best with headers and 2200+ stall
1-bolt camshaft gear attachment
Suitable for 265–455 Pontiac V8 platforms
| Specification | Value |
|---|---|
| Camshaft Type | Hydraulic Flat Tappet |
| Series | Xtreme Energy |
| Engine Family | Pontiac 265–455 c.i. (1955–1981) |
| RPM Range | 1,800–6,000 |
| Advertised Duration (Int/Exh) | 274 / 286 |
| Duration @ .050" (Int/Exh) | 230 / 236 |
| Valve Lift (Int/Exh) | 0.488 / 0.491 |
| Lobe Lift (Int/Exh) | 0.325 / 0.327 |
| Lobe Separation Angle | 110° |
| Intake Centerline | 106° |
| Intake Open (BTDC) | 31° |
| Intake Close (ABDC) | 63° |
| Exhaust Open (BBDC) | 77° |
| Exhaust Close (ATDC) | 29° |
| Valve Timing @ .006" | Not specified |
| Gear Attachment | 1-Bolt |
| Usage | Street/Performance |
| Lifter Type | Hydraulic Flat Tappet |
| Warranty | 12 Months |
| UPC | 036584047308 |
| Emissions Code | Not specified |
| Make | Pontiac |
| California Proposition 65 | Cancer and Reproductive Harm (P65Warnings.ca.gov) |
Make: Pontiac
Engine Family: 265 / 287 / 301 / 326 / 350 / 389 / 400 / 421 / 428 / 455 c.i. V8
Model Years: 1955–1981
Cam Gear Style: 1-bolt
