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.
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 |
| 1975-1986 | Chevrolet C20 |
| 1968-1974 | Chevrolet C20 Pickup |
| 1968-1986 | Chevrolet C20 Suburban |
| 1975-1986 | Chevrolet C30 |
| 1968-1974 | Chevrolet C30 Pickup |
| 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 |
| 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 |
| 1977 | Chevrolet K30 |
| 1980-1986 | Chevrolet K30 |
| 1968-1974 | Chevrolet K30 Pickup |
| 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 |
| 1975-1989 | Chevrolet P30 |
| 1970-1971 | Chevrolet P30 Van |
| 1973-1974 | Chevrolet P30 Van |
| 1987-1988 | Chevrolet R30 |
| 1989 | Chevrolet R3500 |
| 1969-1972 | Chevrolet Townsman |
| 1987-1988 | Chevrolet V30 |
| 1989 | Chevrolet V3500 |
| 1972-1979 | Excalibur Phaeton |
| 1975-1978 | GMC C15 |
| 1975-1978 | GMC C15 Suburban |
| 1968-1974 | GMC C15/C1500 Pickup |
| 1968-1974 | GMC C15/C1500 Suburban |
| 1979-1980 | GMC C1500 |
| 1979-1980 | GMC C1500 Suburban |
| 1975-1978 | GMC C25 |
| 1975-1978 | GMC C25 Suburban |
| 1968-1974 | GMC C25/C2500 Pickup |
| 1968-1974 | GMC C25/C2500 Suburban |
| 1979-1986 | GMC C2500 |
| 1979-1986 | GMC C2500 Suburban |
| 1975-1978 | GMC C35 |
| 1968-1974 | GMC C35/C3500 Pickup |
| 1979-1986 | GMC C3500 |
| 1975-1976 | GMC G25 |
| Attributes | |
| Advertised Exhaust Duration | 306, 306, 306 |
| Advertised Intake Duration | 300, 300, 300 |
| Amazon ASIN | B000P5B64O, B000P5B64O |
| ASIN | B000P5B64O |
| Assembly Lubricant Included | No, No, No |
| Basic Operating RPM Range | 3200-6,200, 3200-6,200, 3200-6,200 |
| C.A.R.B. E.O. Number | N/A, N/A |
| C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967? | Yes, but must meet tailpipe emission standards for year of vehicle., Yes, but must meet tailpipe emission standards for year of vehicle. |
| C.A.R.B. Exempt for On-Road Vehicles? | No, No |
| C.A.R.B. Exempt for Racing and Off-Road Only Vehicles? | Yes, but must be a race/competition only vehicle., Yes, but must be a race/competition only vehicle. |
| C.A.R.B. Exemption Reason | N/A, N/A |
| California Proposition 65 | WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Cam and Lifter Kit Upgrade | CL11-444-8, CL11-444-8, CL11-444-8 |
| Cam Type | Hydraulic Roller, Hydraulic Roller, Hydraulic Roller |
| Camshaft Gear Attachment | 3-Bolt, 3-Bolt, 3-Bolt |
| Camshaft Material | Austempered Ductile Iron, Austempered Ductile Iron, Austempered Ductile 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), Chevrolet 396-454 c.i. 8 Cylinder (1967-1996) |
| Engine Make/Size | Chevy Big Block (396-454) |
| Exh. Duration @ .050 in. (Deg) | 254 |
| Exh. Duration Advertised (Deg) | 306 |
| Exhaust Duration at .050 inch Lift | 254, 254, 254 |
| Exhaust Valve Lift | 0.58, 0.58, 0.58 |
| Exhaust Valve Lift (in.) | 0.58 |
| Grind Number | XR300HR, XR300HR |
| Harmonized Tariff Code (Schedule B) | 8409914000 |
| Hazardous Material Code | N |
| Int. Duration @ .050 in. (Deg) | 248 |
| Int. Duration Advertised (Deg) | 300 |
| Intake Duration at .050 Inch Lift | 248, 248, 248 |
| Intake Valve Lift | 0.56, 0.56, 0.56 |
| Intake Valve Lift (in.) | 0.560 |
| K-Kit Upgrade | K11-444-8, K11-444-8, K11-444-8 |
| Life Cycle Status Code | Available to Order |
| Lifter Style | Hydraulic Roller |
| Lifter Type | Hydraulic Roller, Hydraulic Roller, Hydraulic Roller |
| Lifters Included | No, No, No |
| Lobe Separation | 110, 110, 110 |
| NAFTA Preference Criterion Code | B |
| RPM Range | 3200-6200 |
| SDR Required Flag | N |
| SDS Sheet Number | N/A |
| SK-Kit Upgrade | SK11-444-8, SK11-444-8, SK11-444-8 |
| Usage | Street/Performance, Street/Performance |
| Valve Springs Required | Yes, Yes, Yes |
| Warranty Time | 12 |
| GTIN | 00036584024897 |