Xtreme EnergyT, XR300HR: Cam & Lifters
HYDRAULIC ROLLER: Pro street/ Bracket racing, 10:1 compression, 3500+ stall good intake, headers.
Specification
Lifter Type: Hydraulic Roller Lifter
Engine Family: Chevrolet 396-454 c.i. 8 CYL. 1965-1996
Cam Family: Xtreme EnergyT Retro-Fit Hydraulic Roller Camshafts
RPM Range: 3200 to 6200
Valve Timing: 0.006
Lobe Separation: 110°
Intake Centerline: 106°
Valve Lash: Hyd.(Intake)/ Hyd.(Exhaust)
Duration: 300(Intake)/ 300(Exhaust)
Duration @ .050" Lift: 248(Intake)/ 254(Exhaust)
Valve Lift: 0.56(Intake)/ 0.58(Exhaust)
Lobe Lift: 0.33(Intake)/ 0.342(Exhaust)
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1967 - 1975 | Chevrolet | Bel Air | Base |
| 1967 - 1972 | Chevrolet | Biscayne | Base |
| 1973 - 1974 | Chevrolet | Blazer | Base |
| 1969 - 1972 | Chevrolet | Brookwood | Base |
| 1978 - 1980 | Chevrolet | C10 | Big Ten |
| 1975 - 1980 | Chevrolet | C10 | Custom Deluxe, Custom, Silverado, Cheyenne, Scottsdale |
| 1968 - 1974 | Chevrolet | C10 Pickup | Base |
| 1968 - 1974 | Chevrolet | C10 Suburban | Base |
| 1975 - 1980 | Chevrolet | C10 Suburban | Custom Deluxe, Silverado, Scottsdale |
| 1990 - 1993 | Chevrolet | C1500 | 454 SS, Silverado, WT, Cheyenne |
| 1990 - 1991 | Chevrolet | C1500 | Base |
| 1990 - 1992 | Chevrolet | C1500 | Scottsdale |
| 1986 | Chevrolet | C20 | Base |
| 1981 - 1986 | Chevrolet | C20 | Custom |
| 1975 - 1980 | Chevrolet | C20 | Custom Deluxe |
| 1981 | Chevrolet | C20 | Deluxe |
| 1975 - 1986 | Chevrolet | C20 | Scottsdale, Cheyenne, Silverado |
| 1968 - 1974 | Chevrolet | C20 Pickup | Base |
| 1968 - 1974 | Chevrolet | C20 Suburban | Base |
| 1981 - 1986 | Chevrolet | C20 Suburban | Custom |
| 1975 - 1980 | Chevrolet | C20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C20 Suburban | Deluxe |
| 1975 - 1986 | Chevrolet | C20 Suburban | Silverado, Scottsdale |
| 1993 | Chevrolet | C2500 | Custom, 400 SS |
| 1991 - 1992 | Chevrolet | C2500 | Scottsdale |
| 1991 - 1995 | Chevrolet | C2500 | Silverado, Cheyenne, Base |
| 1994 - 1995 | Chevrolet | C2500 | WT |
| 1992 - 1995 | Chevrolet | C2500 Suburban | Base |
| 1995 | Chevrolet | C2500 Suburban | LS, LT |
| 1992 - 1994 | Chevrolet | C2500 Suburban | Silverado |
| 1975 - 1982 | Chevrolet | C30 | Base |
| 1975 - 1981 | Chevrolet | C30 | Cheyenne |
| 1981 - 1986 | Chevrolet | C30 | Custom |
| 1975 - 1980 | Chevrolet | C30 | Custom Deluxe |
| 1981 | Chevrolet | C30 | Deluxe |
| 1975 - 1986 | Chevrolet | C30 | Silverado, Scottsdale |
| 1968 - 1974 | Chevrolet | C30 Pickup | Base |
| 1994 - 1995 | Chevrolet | C3500 | Base |
| 1988 - 1992 | Chevrolet | C3500 | Scottsdale |
| 1988 - 1995 | Chevrolet | C3500 | Silverado, Cheyenne |
| 1967 - 1972 | Chevrolet | Camaro | SS, Base, RS, Z28 |
| 1967 - 1974 | Chevrolet | Caprice | Base |
| 1973 - 1976 | Chevrolet | Caprice | Classic |
| 1976 | Chevrolet | Caprice | Classic Estate, Classic Landau |
| 1975 - 1976 | Chevrolet | Caprice | Classic Sport |
| 1973 - 1974 | Chevrolet | Caprice | Estate |
| 1975 | Chevrolet | Caprice | Estate Wagon |
| 1967 - 1968 | Chevrolet | Chevelle | 300 |
| 1967 - 1969 | Chevrolet | Chevelle | 300 Deluxe |
| 1967 - 1972 | Chevrolet | Chevelle | Concours, Base, SS |
| 1967 - 1973 | Chevrolet | Chevelle | Deluxe |
| 1969 - 1972 | Chevrolet | Chevelle | Greenbrier, Concours Estate |
| 1968 - 1972 | Chevrolet | Chevelle | Nomad, Malibu |
| 1968 | Chevrolet | Chevy II | Nova |
| 1967 - 1974 | Chevrolet | Corvette | Base |
| 1967 - 1975 | Chevrolet | El Camino | Base |
| 1975 | Chevrolet | El Camino | Classic |
| 1968 - 1974 | Chevrolet | El Camino | Custom |
| 1968 - 1975 | Chevrolet | El Camino | SS |
| 1969 - 1970 | Chevrolet | Estate | Base |
| 1973 - 1974 | Chevrolet | G10 Van | Base, Sportvan |
| 1976 | Chevrolet | G20 | Beauville, Sportvan, Chevy Van |
| 1973 - 1974 | Chevrolet | G20 Van | Base, Sportvan |
| 1975 - 1996 | Chevrolet | G30 | Beauville, Chevy Van, Hi-Cube, Sportvan |
| 1973 - 1974 | Chevrolet | G30 Van | Base, Sportvan |
| 1967 - 1976 | Chevrolet | Impala | Base |
| 1975 - 1976 | Chevrolet | Impala | Custom, Sport |
| 1976 | Chevrolet | Impala | S, Custom Landau |
| 1967 | Chevrolet | Impala | SS |
| 1976 - 1980 | Chevrolet | K10 | Scottsdale, Silverado, Custom Deluxe, Cheyenne |
| 1968 - 1974 | Chevrolet | K10 Pickup | Base |
| 1968 - 1974 | Chevrolet | K10 Suburban | Base |
| 1976 - 1980 | Chevrolet | K20 | Custom Deluxe, Silverado, Scottsdale, Cheyenne |
| 1968 - 1974 | Chevrolet | K20 Pickup | Base |
| 1968 - 1974 | Chevrolet | K20 Suburban | Base |
| 1985 | Chevrolet | K20 Suburban | Scottsdale, Custom, Silverado |
| 1991 - 1995 | Chevrolet | K2500 | Cheyenne, Silverado |
| 1991 - 1992 | Chevrolet | K2500 | Scottsdale |
| 1994 - 1995 | Chevrolet | K2500 | WT, Base |
| 1992 - 1995 | Chevrolet | K2500 Suburban | Base |
| 1995 | Chevrolet | K2500 Suburban | LS, LT |
| 1992 - 1994 | Chevrolet | K2500 Suburban | Silverado |
| 1977 - 1981 | Chevrolet | K30 | Cheyenne |
| 1981 - 1986 | Chevrolet | K30 | Custom |
| 1977 - 1980 | Chevrolet | K30 | Custom Deluxe |
| 1981 | Chevrolet | K30 | Deluxe |
| 1977 - 1986 | Chevrolet | K30 | Scottsdale, Silverado |
| 1968 - 1974 | Chevrolet | K30 Pickup | Base |
| 1994 - 1995 | Chevrolet | K3500 | Base |
| 1988 - 1995 | Chevrolet | K3500 | Cheyenne, Silverado |
| 1988 - 1992 | Chevrolet | K3500 | Scottsdale |
| 1976 | Chevrolet | K5 Blazer | Base |
| 1976 - 1978 | Chevrolet | K5 Blazer | Cheyenne |
| 1977 - 1978 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1978 | Chevrolet | K5 Blazer | Silverado |
| 1969 - 1972 | Chevrolet | Kingswood | Estate, Base |
| 1973 - 1975 | Chevrolet | Laguna | Base |
| 1973 | Chevrolet | Laguna | Estate |
| 1975 | Chevrolet | Laguna | S3 |
| 1974 | Chevrolet | Laguna | Type S-3 |
| 1967 - 1975 | Chevrolet | Malibu | Base |
| 1974 - 1975 | Chevrolet | Malibu | Classic |
| 1975 | Chevrolet | Malibu | Classic Estate |
| 1973 - 1974 | Chevrolet | Malibu | Estate |
| 1970 - 1974 | Chevrolet | Monte Carlo | Base |
| 1973 - 1974 | Chevrolet | Monte Carlo | Landau |
| 1973 - 1975 | Chevrolet | Monte Carlo | S |
| 1969 - 1972 | Chevrolet | Nova | Base |
| 1973 | Chevrolet | P10 Van | Base |
| 1976 - 1979 | Chevrolet | P20 | Step-Van, Base |
| 1970 - 1973 | Chevrolet | P20 Van | Base |
| 1975 - 1997 | Chevrolet | P30 | Base |
| 1975 - 1990 | Chevrolet | P30 | Step-Van |
| 1970 - 1974 | Chevrolet | P30 Van | Base |
| 1988 | Chevrolet | R20 | Cheyenne |
| 1987 - 1988 | Chevrolet | R20 | Custom Deluxe, Scottsdale, Silverado |
| 1987 | Chevrolet | R20 Suburban | Custom Deluxe |
| 1987 - 1988 | Chevrolet | R20 Suburban | Scottsdale, Silverado |
| 1989 | Chevrolet | R2500 | Silverado, Cheyenne, Scottsdale |
| 1989 - 1991 | Chevrolet | R2500 Suburban | Silverado, Scottsdale |
| 1988 | Chevrolet | R30 | Cheyenne |
| 1987 - 1988 | Chevrolet | R30 | Silverado, Custom Deluxe, Scottsdale |
| 1989 - 1991 | Chevrolet | R3500 | Cheyenne, Silverado |
| 1989 - 1990 | Chevrolet | R3500 | Scottsdale |
| 1969 - 1972 | Chevrolet | Townsman | Base |
| 1987 | Chevrolet | V20 Suburban | Custom Deluxe |
| 1987 - 1988 | Chevrolet | V20 Suburban | Silverado, Scottsdale |
| 1990 | Chevrolet | V2500 Suburban | Scottsdale, Silverado |
| 1988 | Chevrolet | V30 | Cheyenne |
| 1987 - 1988 | Chevrolet | V30 | Custom Deluxe, Silverado, Scottsdale |
| 1989 - 1990 | Chevrolet | V3500 | Scottsdale |
| 1989 - 1991 | Chevrolet | V3500 | Silverado, Cheyenne |
| 1972 - 1979 | Excalibur | Phaeton | Base |
| 1977 - 1978 | GMC | C15 | Heavy Half |
| 1977 | GMC | C15 | Indy Hauler |
| 1975 - 1978 | GMC | C15 | Sierra Classic, Sierra Grande, Base, High Sierra |
| 1978 | GMC | C15 | Street Coupe |
| 1975 - 1978 | GMC | C15 Suburban | Sierra Classic, Base, Sierra Grande, High Sierra |
| 1968 - 1974 | GMC | C15/C1500 Pickup | Base |
| 1968 - 1974 | GMC | C15/C1500 Suburban | Base |
| 1979 - 1980 | GMC | C1500 | High Sierra, Sierra Grande, Heavy Half, Sierra Classic, Base, Street Coupe |
| 1979 - 1980 | GMC | C1500 Suburban | Sierra Grande, Base, Sierra Classic, High Sierra |
| 1975 - 1978 | GMC | C25 | High Sierra, Sierra Classic, Sierra Grande, Base |
| 1975 - 1978 | GMC | C25 Suburban | Base, High Sierra, Sierra Classic, Sierra Grande |
| 1968 - 1974 | GMC | C25/C2500 Pickup | Base |
| 1968 - 1974 | GMC | C25/C2500 Suburban | Base |
| 1979 - 1986 | GMC | C2500 | Sierra Classic, High Sierra, Base |
| 1979 - 1982 | GMC | C2500 | Sierra Grande |
| 1994 - 1995 | GMC | C2500 | Sierra SL, Sierra SLT |
| 1991 - 1995 | GMC | C2500 | Sierra SLE |
| 1991 - 1993 | GMC | C2500 | Sierra, Sierra SLX |
| 1979 - 1995 | GMC | C2500 Suburban | Base |
| 1979 - 1986 | GMC | C2500 Suburban | Sierra Classic, High Sierra |
| 1979 - 1982 | GMC | C2500 Suburban | Sierra Grande |
| 1992 - 1995 | GMC | C2500 Suburban | SLE |
| 1995 | GMC | C2500 Suburban | SLT |
| 1975 - 1978 | GMC | C35 | Sierra Classic, High Sierra, Sierra Grande, Base |
| 1968 - 1974 | GMC | C35/C3500 Pickup | Base |
| 1979 - 1986 | GMC | C3500 | Base, High Sierra, Sierra Classic |
| 1979 - 1982 | GMC | C3500 | Sierra Grande |
| 1988 - 1995 | GMC | C3500 | Sierra SLE |
| 1994 - 1995 | GMC | C3500 | Sierra SLT, Sierra SL |
| 1988 - 1993 | GMC | C3500 | Sierra, Sierra SLX |
| 1975 - 1976 | GMC | G25 | Rally, Rally STX, Vandura |
| 1976 | GMC | G35 | Rally, Rally STX, Vandura Special, Vandura, Magnavan, Rally Camper Special |
| 1974 | GMC | G35/G3500 Van | Base |
| 1973 - 1974 | GMC | G35/G3500 Van | Rally, Vandura |
| 1988 - 1996 | GMC | G3500 | Rally Camper Special, Vandura, Rally STX, Vandura Special, Magnavan, Rally |
| 1988 | GMC | G3500 | Rally Custom |
| 1973 - 1976 | GMC | Jimmy | Base |
| 1976 | GMC | Jimmy | Sierra Grande, Sierra Classic, High Sierra |
| 1976 | GMC | K15 | High Sierra, Sierra Grande, Base, Sierra Classic |
| 1968 - 1974 | GMC | K15/K1500 Pickup | Base |
| 1968 - 1974 | GMC | K15/K1500 Suburban | Base |
| 1979 - 1980 | GMC | K1500 | Sierra Classic, Base, Sierra Grande, High Sierra |
| 1976 - 1978 | GMC | K25 | Base, Sierra Grande, High Sierra, Sierra Classic |
| 1976 - 1977 | GMC | K25 Suburban | Base, High Sierra, Sierra Grande, Sierra Classic |
| 1968 - 1974 | GMC | K25/K2500 Pickup | Base |
| 1968 - 1974 | GMC | K25/K2500 Suburban | Base |
| 1991 - 1995 | GMC | K2500 | Sierra SLE |
| 1994 - 1995 | GMC | K2500 | Sierra SLT, Sierra SL |
| 1991 - 1993 | GMC | K2500 | Sierra SLX, Sierra |
| 1992 - 1995 | GMC | K2500 Suburban | Base, SLE |
| 1995 | GMC | K2500 Suburban | SLT |
| 1968 - 1974 | GMC | K35/K3500 Pickup | Base |
| 1979 - 1986 | GMC | K3500 | Base, High Sierra, Sierra Classic |
| 1979 - 1982 | GMC | K3500 | Sierra Grande |
| 1994 - 1995 | GMC | K3500 | Sierra SL, Sierra SLT |
| 1988 - 1995 | GMC | K3500 | Sierra SLE |
| 1988 - 1993 | GMC | K3500 | Sierra SLX, Sierra |
| 1979 | GMC | P1500 | Base, Value Van |
| 1970 - 1971 | GMC | P25/P2500 Van | Base |
| 1975 - 1978 | GMC | P35 | Value Van, Base |
| 1970 - 1974 | GMC | P35/P3500 Van | Base |
| 1974 | GMC | P35/P3500 Van | Motorhome |
| 1979 - 1997 | GMC | P3500 | Base |
| 1979 - 1990 | GMC | P3500 | Value Van |
| 1987 - 1989 | GMC | R2500 | Sierra Classic, Base, High Sierra |
| 1987 - 1991 | GMC | R2500 Suburban | Base |
| 1987 | GMC | R2500 Suburban | High Sierra |
| 1987 - 1989 | GMC | R2500 Suburban | Sierra Classic |
| 1990 | GMC | R2500 Suburban | SLE |
| 1987 - 1991 | GMC | R3500 | Base |
| 1987 - 1989 | GMC | R3500 | Sierra Classic, High Sierra |
| 1990 - 1991 | GMC | R3500 | SLE |
| 1971 - 1975 | GMC | Sprint | Base |
| 1975 | GMC | Sprint | Classic, SP, High Sierra |
| 1972 - 1974 | GMC | Sprint | Custom |
| 1987 - 1991 | GMC | V3500 | Base |
| 1987 - 1989 | GMC | V3500 | High Sierra, Sierra Classic |
| 1990 - 1991 | GMC | V3500 | SLE |
| 1969 - 1974 | Iso | Grifo | Base |