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COMP Cams Xtreme Energy 248/254 Hydraulic Roller Cam Big Block GEN VI for Chevrolet and GMC
Part # 01-427-8
Description
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 Exhaust Duration | 306 deg |
|---|---|
| Advertised Intake Duration | 300 deg |
| Assembly Lubricant Included | No |
| Basic Operating RPM Range | 3,000-6600 RPM |
| C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965? | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967? | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? | Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for On-Road Vehicles? | No |
| C.A.R.B. Exempt for Racing and Off-Road Only Vehicles? | Yes, but must be a race/competition only vehicle. |
| Cam and Lifter Kit Upgrade | CL01-427-8 |
| Cam Type | Hydraulic Roller |
| Camshaft Gear Attachment | 3-Bolt |
| Camshaft Material | Austempered Ductile Iron |
| Camshaft Series | Xtreme Energy |
| Engine Family | Chevrolet GEN VI 454 and 502 c.i. 8 Cylinder (1996-1999) |
| Exhaust Duration at .050 inch Lift | 254 deg |
| Exhaust Valve Lift | 0.58 in |
| Grind Number | XR300HR-14 |
| Intake Duration at .050 Inch Lift | 248 deg |
| Intake Valve Lift | 0.56 in |
| K-Kit Upgrade | K01-427-8 |
| Lifter Type | Hydraulic Roller |
| Lifters Included | No |
| Lobe Separation | 114 deg |
| SK-Kit Upgrade | SK01-427-8 |
| Usage | Street/Performance |
| Valve Springs Required | Yes |
| UPC / GTIN | 00036584079958 |
| Year | Make | Model | Submodel | Engine |
|---|---|---|---|---|
| 1996 - 1997 | Chevrolet | C2500 | Base, Cheyenne, Silverado | 7.4L V8 |
| 1998 | Chevrolet | C2500 | Cheyenne, Silverado, WT | 7.4L V8 |
| 1999 - 2000 | Chevrolet | C2500 | Base, LS | 7.4L V8 |
| 1996 - 1997 | Chevrolet | C2500 Suburban | Base, LS, LT | 7.4L V8 |
| 1998 - 1999 | Chevrolet | C2500 Suburban | Base, LS | 7.4L V8 |
| 1996 - 1997 | Chevrolet | C3500 | Base, Cheyenne, Silverado | 7.4L V8 |
| 1998 | Chevrolet | C3500 | Cheyenne, Silverado | 7.4L V8 |
| 1999 - 2000 | Chevrolet | C3500 | Base, LS | 7.4L V8 |
| 1996 - 2000 | Chevrolet | Express 3500 | Base, LS | 7.4L V8 |
| 1996 | Chevrolet | G30 | Beauville, Chevy Van, Hi-Cube, Sportvan | 7.4L V8 |
| 1996 - 1997 | Chevrolet | K2500 | Base, Cheyenne, Silverado | 7.4L V8 |
| 1998 | Chevrolet | K2500 | Cheyenne, Silverado, WT | 7.4L V8 |
| 1999 - 2000 | Chevrolet | K2500 | Base, LS | 7.4L V8 |
| 1996 - 1997 | Chevrolet | K2500 Suburban | Base, LS, LT | 7.4L V8 |
| 1998 - 1999 | Chevrolet | K2500 Suburban | Base, LS | 7.4L V8 |
| 1996 - 1997 | Chevrolet | K3500 | Base, Cheyenne, Silverado | 7.4L V8 |
| 1998 | Chevrolet | K3500 | Cheyenne, Silverado | 7.4L V8 |
| 1999 - 2000 | Chevrolet | K3500 | Base, LS | 7.4L V8 |
| 1996 - 1999 | Chevrolet | P30 | Base | 7.4L V8 |
| 1996 - 2000 | GMC | C2500 | Sierra SL, Sierra SLE, Sierra SLT | 7.4L V8 |
| 1996 - 1999 | GMC | C2500 Suburban | Base, SLE, SLT | 7.4L V8 |
| 1996 - 2000 | GMC | C3500 | Sierra SL, Sierra SLE, Sierra SLT | 7.4L V8 |
| 1996 | GMC | G3500 | Magnavan, Rally, Rally Camper Special, Rally STX, Vandura, Vandura Special | 7.4L V8 |
| 1996 - 2000 | GMC | K2500 | Sierra SL, Sierra SLE, Sierra SLT | 7.4L V8 |
| 1996 - 1999 | GMC | K2500 Suburban | Base, SLE, SLT | 7.4L V8 |
| 1996 - 2000 | GMC | K3500 | Sierra SL, Sierra SLE, Sierra SLT | 7.4L V8 |
| 1996 - 1999 | GMC | P3500 | Base | 7.4L V8 |
| 1996 - 2000 | GMC | Savana 3500 | Base, SLE | 7.4L V8 |