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COMP Cams 11-444-8 Xtreme Energy 248/254 Hydraulic Roller Cam for Chevrolet Big Block 396-454
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Enter your Engine Family Number and we will confirm whether this exact converter is street-legal for your vehicle.
Pro Street/bracket racing, 10:1+ compression, 3500+ stall, good intake, headers.
Featuring a quicker valve opening, the Xtreme Energy camshaft profile provides increased responsiveness and more area under the lift curve than older, slower grinds. Designed to increase performance without sacrificing driveability and creature comforts, the Xtreme Energy grind family offers gains in torque and horsepower while still delivering adequate vacuum for power brakes and other vacuum dependent accessories. Xtreme Energy camshafts work great in carbureted applications, but offer the best performance with aftermarket intake manifolds, lower gear ratios, headers and free flowing exhaust.
Specifications
| Advertised Intake Duration | 300 DD |
| Advertised Exhaust Duration | 306 DD |
| Lobe Separation | 110 DD |
| Intake Valve Lift | 0.56 IN |
| Exhaust Valve Lift | 0.58 IN |
| Lifters Included | No |
| Valve Springs Required | Yes |
| Assembly Lubricant Included | No |
| Camshaft Gear Attachment | 3-Bolt |
| Camshaft Material | Austempered Ductile Iron |
| Engine Family | Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| Cam and Lifter Kit Upgrade | CL11-444-8 |
| K-Kit Upgrade | K11-444-8 |
| Lifter Type | Hydraulic Roller |
| SK-Kit Upgrade | SK11-444-8 |
| Exhaust Duration at .050 inch Lift | 254 DD |
| Intake Duration at .050 Inch Lift | 248 DD |
| Basic Operating RPM Range | 3200-6,200 R3 |
| Grind Number | XR300HR |
| Cam Type | Hydraulic Roller |
| Usage | Street/Performance |
| Camshaft Series | Xtreme Energy |
| Grind Number | XR300HR |
⚠️ California Proposition 65 Warning
California Residents: This product can expose you to chemicals which are known to the State of California to cause cancer or other reproductive harm. Please visit www.p65warnings.ca.gov for more information.
Warranty: 12 Months
Please check the product description for the manufacturer’s application details, or ask a specialist — we’ll confirm whether it fits your vehicle before you buy.
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Shipping: Free to the USA.
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