Strong torque thru low and mid-range, good idle.
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.
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.
Application Summary:
| Year | Make/Model |
|---|---|
| 1967-1975 | Chevrolet Bel Air |
| 1967-1972 | Chevrolet Biscayne |
| 1973-1974 | Chevrolet Blazer |
| 1969-1972 | Chevrolet Brookwood |
| 1975-1980 | Chevrolet C10 |
| 1968-1974 | Chevrolet C10 Pickup |
| 1968-1980 | Chevrolet C10 Suburban |
| 1990-1993 | Chevrolet C1500 |
| 1975-1986 | Chevrolet C20 |
| 1968-1974 | Chevrolet C20 Pickup |
| 1968-1986 | Chevrolet C20 Suburban |
| 1991-1995 | Chevrolet C2500 |
| 1994-1995 | Chevrolet C2500 Suburban |
| 1975-1986 | Chevrolet C30 |
| 1968-1974 | Chevrolet C30 Pickup |
| 1988-1995 | Chevrolet C3500 |
| 1967-1972 | Chevrolet Camaro |
| 1967-1976 | Chevrolet Caprice |
| 1967-1973 | Chevrolet Chevelle |
| 1968 | Chevrolet Chevy II |
| 1967-1974 | Chevrolet Corvette |
| 1967-1975 | Chevrolet El Camino |
| 1969-1970 | Chevrolet Estate |
| 1973-1974 | Chevrolet G10 Van |
| 1976 | Chevrolet G20 |
| 1973-1974 | Chevrolet G20 Van |
| 1975-1976 | Chevrolet G30 |
| 1988-1995 | Chevrolet G30 |
| 1973-1974 | Chevrolet G30 Van |
| 1967-1976 | Chevrolet Impala |
| 1976 | Chevrolet K10 |
| 1980 | Chevrolet K10 |
| 1968-1974 | Chevrolet K10 Pickup |
| 1968-1974 | Chevrolet K10 Suburban |
| 1976-1978 | Chevrolet K20 |
| 1968-1974 | Chevrolet K20 Pickup |
| 1968-1974 | Chevrolet K20 Suburban |
| 1985 | Chevrolet K20 Suburban |
| 1991-1995 | Chevrolet K2500 |
| 1994-1995 | Chevrolet K2500 Suburban |
| 1977 | Chevrolet K30 |
| 1980-1986 | Chevrolet K30 |
| 1968-1974 | Chevrolet K30 Pickup |
| 1988-1995 | Chevrolet K3500 |
| 1976-1978 | Chevrolet K5 Blazer |
| 1969-1972 | Chevrolet Kingswood |
| 1973-1975 | Chevrolet Laguna |
| 1967 | Chevrolet Malibu |
| 1973-1975 | Chevrolet Malibu |
| 1970-1975 | Chevrolet Monte Carlo |
| 1969-1972 | Chevrolet Nova |
| 1973 | Chevrolet P10 Van |
| 1976 | Chevrolet P20 |
| 1979 | Chevrolet P20 |
| 1970-1971 | Chevrolet P20 Van |
| 1973 | Chevrolet P20 Van |
| 1975-1997 | Chevrolet P30 |
| 1970-1971 | Chevrolet P30 Van |
| 1973-1974 | Chevrolet P30 Van |
| 1987-1988 | Chevrolet R20 |
| 1987-1988 | Chevrolet R20 Suburban |
| 1989 | Chevrolet R2500 |
| 1989-1991 | Chevrolet R2500 Suburban |
| 1987-1988 | Chevrolet R30 |
| 1989-1991 | Chevrolet R3500 |
| 1969-1972 | Chevrolet Townsman |
| 1987-1988 | Chevrolet V20 Suburban |
| 1990 | Chevrolet V2500 Suburban |
| 1987-1988 | Chevrolet V30 |
| 1989-1991 | Chevrolet V3500 |
| Attributes | |
| Advertised Exhaust Duration | 268, 268 |
| Advertised Intake Duration | 256, 256 |
| Amazon ASIN | B000CEQDA0 |
| ASIN | B000CEQDA0 |
| Assembly Lubricant Included | Yes, Yes |
| Basic Operating RPM Range | 1,000-5,200, 1,000-5,200 |
| C.A.R.B. E.O. Number | N/A |
| 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. |
| C.A.R.B. Exemption Reason | N/A |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Cam and Lifter Kit Upgrade | CL11-234-3, CL11-234-3 |
| Cam Type | Hydraulic Flat Tappet, Hydraulic Flat Tappet |
| Camshaft Gear Attachment | 3-Bolt, 3-Bolt |
| Camshaft Material | Cast Iron, Cast Iron |
| Camshaft Series | Xtreme Energy, Xtreme Energy |
| Country of Origin (Primary) | US |
| Emission Code | Not in CA |
| Engine Family | Chevrolet 396-454 c.i. 8 Cylinder (1967-1996), Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| Engine Make/Size | Chevy Big Block (396-454) |
| Exh. Duration @ .050 in. (Deg) | 218 |
| Exh. Duration Advertised (Deg) | 268 |
| Exhaust Duration at .050 inch Lift | 218, 218 |
| Exhaust Valve Lift | 0.485, 0.485 |
| Exhaust Valve Lift (in.) | 0.485 |
| Grind Number | XE256H, XE256H |
| Harmonized Tariff Code (Schedule B) | 8409914000 |
| Hazardous Material Code | Y |
| Int. Duration @ .050 in. (Deg) | 212 |
| Int. Duration Advertised (Deg) | 256 |
| Intake Duration at .050 Inch Lift | 212, 212 |
| Intake Valve Lift | 0.48, 0.48 |
| Intake Valve Lift (in.) | 0.480 |
| K-Kit Upgrade | K11-234-3, K11-234-3 |
| Life Cycle Status Code | Available to Order |
| Lifter Style | Hydraulic Flat Tappet |
| Lifter Type | Hydraulic Flat Tappet, Hydraulic Flat Tappet |
| Lifters Included | No, No |
| Lobe Separation | 110, 110 |
| NAFTA Preference Criterion Code | B |
| RPM Range | 1000-5200 |
| SDR Required Flag | Y |
| SDS Sheet Number | COMP4-107 |
| SK-Kit Upgrade | SK11-234-3, SK11-234-3 |
| Usage | Street/Performance, Street/Performance |
| Valve Springs Required | Yes, Yes |
| Warranty Time | 12 |
| GTIN | 00036584023678 |