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Comp Cams Part Number 11-250-3 is an Xtreme Energy 240/246 hydraulic flat tappet camshaft designed for Chevrolet Big Block 396–454 engines (1967–1996). Built for street/strip performance, this camshaft delivers a strong midrange and upper-RPM powerband with a performance-oriented idle. Ideal for enthusiasts seeking a responsive and aggressive upgrade for big block Chevrolet applications.
Xtreme Energy series hydraulic flat tappet camshaft
Strong midrange and top-end power
Suitable for street/strip performance builds
Performance-oriented idle
3-bolt camshaft gear attachment
Compatible with 396–454 big block Chevrolet engines
| Specification | Value |
|---|---|
| Camshaft Type | Hydraulic Flat Tappet |
| Series | Xtreme Energy |
| Engine Family | Chevrolet 396–454 c.i. (1967–1996) |
| RPM Range | 2,300–6,500 |
| Advertised Duration (Int/Exh) | 284 / 296 |
| Duration @ .050" (Int/Exh) | 240 / 246 |
| Valve Lift (Int/Exh) | 0.574 / 0.578 |
| Lobe Lift (Int/Exh) | 0.339 / 0.341 |
| Lobe Separation Angle | 110° |
| Intake Centerline | 106° |
| Intake Open (BTDC) | 36° |
| Intake Close (ABDC) | 68° |
| Exhaust Open (BBDC) | 82° |
| Exhaust Close (ATDC) | 34° |
| Valve Timing @ .006" | Not specified |
| Gear Attachment | 3-Bolt |
| Usage | Street/Performance |
| Lifter Type | Hydraulic Flat Tappet |
| Warranty | 12 Months |
| UPC | 036584023715 |
| Emissions Code | Not specified |
| 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
