Hi-Tech", 280B-6
Good for 1/8 Mile Drag or 1/4 to 3/8 Mile Oval Track
- Lifter Type: Solid Lifter
- Engine Family: Chevrolet 194-250 c.i. 6 CYL. 1963-1984
- Description: Solid-Good for 1/8 mile drag or, 1/4 to 3/8 mile oval track. Broad torque range.
- Cam Family: Hi-Tech" Mechanical Flat Tappet Camshafts
Specification:
- RPM Range: 3500 to 6500
- Valve Timing: 0.02
- Lobe Separation: 106°
- Intake Centerline: 106°
- Valve Lash: 0.022 Intake/ 0.024 Exhaust
- Duration: 280 Intake/ 284 Exhaust
- Duration @ .050" Lift: 242 Intake/ 246Exhaust
- Valve Lift: 0.591 Intake/0.57 Exhaust
- Lobe Lift: 0.339 Intake/ 0.326 Exhaust
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1973 - 1975 | Buick | Apollo | Base |
| 1975 | Buick | Apollo | SR |
| 1970 | Buick | Skylark | 350 |
| 1968 - 1971 | Buick | Skylark | Base, Custom |
| 1968 - 1969 | Buick | Special | Base |
| 1970 - 1974 | Checker | A11 | Base |
| 1970 - 1974 | Checker | A11E | Base |
| 1969 - 1970 | Checker | Deluxe | Base |
| 1971 - 1975 | Checker | Marathon | Aerobus |
| 1965 - 1979 | Checker | Marathon | Base |
| 1970 - 1979 | Checker | Marathon | Deluxe |
| 1965 - 1974 | Checker | Marathon | Town Custom |
| 1969 - 1974 | Checker | Taxicab | Base |
| 1963 - 1973 | Chevrolet | Bel Air | Base |
| 1963 - 1972 | Chevrolet | Biscayne | Base |
| 1969 - 1974 | Chevrolet | Blazer | Base |
| 1969 - 1972 | Chevrolet | Brookwood | Base |
| 1978 - 1980 | Chevrolet | C10 | Big Ten |
| 1975 - 1981 | Chevrolet | C10 | Cheyenne |
| 1975 - 1980 | Chevrolet | C10 | Custom Deluxe |
| 1981 | Chevrolet | C10 | Deluxe |
| 1975 - 1984 | Chevrolet | C10 | Scottsdale, Custom, Silverado |
| 1966 - 1967 | Chevrolet | C10 Panel | Base |
| 1963 - 1974 | Chevrolet | C10 Pickup | Base |
| 1967 - 1974 | Chevrolet | C10 Suburban | Base |
| 1975 - 1980 | Chevrolet | C10 Suburban | Custom Deluxe, Scottsdale, Silverado |
| 1975 - 1981 | Chevrolet | C20 | Cheyenne |
| 1981 - 1984 | Chevrolet | C20 | Custom |
| 1975 - 1980 | Chevrolet | C20 | Custom Deluxe |
| 1981 | Chevrolet | C20 | Deluxe |
| 1975 - 1984 | Chevrolet | C20 | Silverado, Scottsdale |
| 1967 | Chevrolet | C20 Panel | Base |
| 1963 - 1974 | Chevrolet | C20 Pickup | Base |
| 1967 - 1974 | Chevrolet | C20 Suburban | Base |
| 1975 - 1980 | Chevrolet | C30 | Silverado, Scottsdale, Custom Deluxe, Base, Cheyenne |
| 1966 | Chevrolet | C30 Panel | Base |
| 1963 - 1974 | Chevrolet | C30 Pickup | Base |
| 1967 - 1979 | Chevrolet | Camaro | Base, Z28 |
| 1979 | Chevrolet | Camaro | Berlinetta |
| 1973 - 1978 | Chevrolet | Camaro | LT |
| 1976 - 1978 | Chevrolet | Camaro | LT Rally Sport |
| 1976 - 1979 | Chevrolet | Camaro | Rally Sport |
| 1967 - 1975 | Chevrolet | Camaro | RS |
| 1967 - 1972 | Chevrolet | Camaro | SS |
| 1967 - 1974 | Chevrolet | Caprice | Base |
| 1973 - 1979 | Chevrolet | Caprice | Classic |
| 1977 - 1978 | Chevrolet | Caprice | Classic Estate |
| 1977 - 1979 | Chevrolet | Caprice | Classic Landau |
| 1973 - 1974 | Chevrolet | Caprice | Estate |
| 1979 | Chevrolet | Caprice | Landau, Classic Sport |
| 1967 - 1968 | Chevrolet | Chevelle | 300 |
| 1967 - 1969 | Chevrolet | Chevelle | 300 Deluxe |
| 1964 - 1972 | Chevrolet | Chevelle | Base, SS |
| 1967 - 1972 | Chevrolet | Chevelle | Concours |
| 1969 - 1972 | Chevrolet | Chevelle | Concours Estate, Greenbrier |
| 1965 - 1973 | Chevrolet | Chevelle | Deluxe |
| 1968 - 1972 | Chevrolet | Chevelle | Nomad, Malibu |
| 1962 - 1967 | Chevrolet | Chevy II | Base |
| 1962 - 1968 | Chevrolet | Chevy II | Nova |
| 1964 - 1967 | Chevrolet | Chevy II | Nova SS |
| 1964 - 1977 | Chevrolet | El Camino | Base |
| 1975 - 1977 | Chevrolet | El Camino | Classic |
| 1977 | Chevrolet | El Camino | Conquista |
| 1968 - 1974 | Chevrolet | El Camino | Custom |
| 1968 - 1977 | Chevrolet | El Camino | SS |
| 1969 - 1970 | Chevrolet | Estate | Base |
| 1983 | Chevrolet | G10 | Base |
| 1975 - 1984 | Chevrolet | G10 | Beauville, Sportvan, Chevy Van |
| 1981 - 1984 | Chevrolet | G10 | Bonaventure |
| 1967 - 1974 | Chevrolet | G10 Van | Base |
| 1972 - 1974 | Chevrolet | G10 Van | Sportvan |
| 1983 - 1984 | Chevrolet | G20 | Bonaventure |
| 1975 - 1984 | Chevrolet | G20 | Chevy Van, Beauville, Sportvan |
| 1978 - 1981 | Chevrolet | G20 | Nomad |
| 1967 - 1974 | Chevrolet | G20 Van | Base |
| 1968 - 1974 | Chevrolet | G20 Van | Sportvan |
| 1983 - 1984 | Chevrolet | G30 | Bonaventure |
| 1976 - 1984 | Chevrolet | G30 | Sportvan, Hi-Cube, Chevy Van, Beauville |
| 1972 - 1974 | Chevrolet | G30 Van | Base, Sportvan |
| 1963 - 1979 | Chevrolet | Impala | Base |
| 1977 | Chevrolet | Impala | Custom |
| 1977 - 1979 | Chevrolet | Impala | Landau |
| 1979 | Chevrolet | Impala | Sport |
| 1964 - 1967 | Chevrolet | Impala | SS |
| 1975 - 1981 | Chevrolet | K10 | Cheyenne |
| 1981 - 1984 | Chevrolet | K10 | Custom |
| 1975 - 1980 | Chevrolet | K10 | Custom Deluxe |
| 1981 | Chevrolet | K10 | Deluxe |
| 1975 - 1984 | Chevrolet | K10 | Silverado, Scottsdale |
| 1963 - 1974 | Chevrolet | K10 Pickup | Base |
| 1967 - 1974 | Chevrolet | K10 Suburban | Base |
| 1975 - 1980 | Chevrolet | K10 Suburban | Custom Deluxe, Silverado, Scottsdale |
| 1975 - 1980 | Chevrolet | K20 | Custom Deluxe, Silverado, Cheyenne, Scottsdale |
| 1967 | Chevrolet | K20 Panel | Base |
| 1963 - 1974 | Chevrolet | K20 Pickup | Base |
| 1967 - 1974 | Chevrolet | K20 Suburban | Base |
| 1968 - 1974 | Chevrolet | K30 Pickup | Base |
| 1976 | Chevrolet | K5 Blazer | Base |
| 1981 - 1982 | Chevrolet | K5 Blazer | Custom |
| 1975 - 1980 | Chevrolet | K5 Blazer | Custom Deluxe, Cheyenne |
| 1981 | Chevrolet | K5 Blazer | Deluxe |
| 1978 - 1982 | Chevrolet | K5 Blazer | Silverado |
| 1964 - 1977 | Chevrolet | Malibu | Base |
| 1974 - 1977 | Chevrolet | Malibu | Classic |
| 1975 - 1976 | Chevrolet | Malibu | Classic Estate |
| 1976 - 1977 | Chevrolet | Malibu | Classic Landau |
| 1977 | Chevrolet | Malibu | Classic Sport, Sport |
| 1973 - 1974 | Chevrolet | Malibu | Estate |
| 1976 | Chevrolet | Malibu | Landau |
| 1969 - 1979 | Chevrolet | Nova | Base |
| 1976 - 1977 | Chevrolet | Nova | Concours |
| 1973 - 1979 | Chevrolet | Nova | Custom |
| 1975 | Chevrolet | Nova | LN |
| 1975 - 1978 | Chevrolet | Nova | Police |
| 1977 - 1979 | Chevrolet | Nova | Rally |
| 1976 | Chevrolet | Nova | SS |
| 1963 - 1967 | Chevrolet | P10 Series | Base |
| 1973 - 1974 | Chevrolet | P10 Van | Base |
| 1963 - 1967 | Chevrolet | P20 Series | Base |
| 1973 - 1974 | Chevrolet | P20 Van | Base |
| 1976 - 1979 | Chevrolet | P30 | Step-Van, Base |
| 1963 - 1967 | Chevrolet | P30 Series | Base |
| 1973 - 1974 | Chevrolet | P30 Van | Base |
| 1963 - 1966 | Chevrolet | Suburban | Base |
| 1966 | GMC | 1000 | Base |
| 1963 - 1965 | GMC | 1000 Series | Base |
| 1966 | GMC | 1500 | Base |
| 1963 - 1965 | GMC | 1500 Series | Base |
| 1966 | GMC | 2500 | Base |
| 1963 - 1965 | GMC | 2500 Series | Base |
| 1963 - 1966 | GMC | 3000 | Base |
| 1963 - 1966 | GMC | 3500 | Base |
| 1975 - 1978 | GMC | C15 | Base, High Sierra, Sierra Classic, Sierra Grande |
| 1977 - 1978 | GMC | C15 | Heavy Half |
| 1977 | GMC | C15 | Indy Hauler |
| 1978 | GMC | C15 | Street Coupe |
| 1975 - 1978 | GMC | C15 Suburban | Base, Sierra Classic, Sierra Grande, High Sierra |
| 1967 - 1974 | GMC | C15/C1500 Pickup | Base |
| 1967 - 1974 | GMC | C15/C1500 Suburban | Base |
| 1979 - 1980 | GMC | C1500 | Heavy Half |
| 1979 - 1984 | GMC | C1500 | Sierra Classic, High Sierra, Base |
| 1979 - 1982 | GMC | C1500 | Sierra Grande, Street Coupe |
| 1979 - 1980 | GMC | C1500 Suburban | High Sierra, Sierra Grande, Sierra Classic, Base |
| 1975 - 1978 | GMC | C25 | Sierra Grande, Base, High Sierra, Sierra Classic |
| 1967 - 1974 | GMC | C25/C2500 Pickup | Base |
| 1967 - 1974 | GMC | C25/C2500 Suburban | Base |
| 1979 - 1984 | GMC | C2500 | High Sierra, Sierra Classic, Base |
| 1979 - 1982 | GMC | C2500 | Sierra Grande |
| 1975 - 1978 | GMC | C35 | High Sierra, Sierra Grande, Base, Sierra Classic |
| 1967 - 1974 | GMC | C35/C3500 Pickup | Base |
| 1979 - 1980 | GMC | C3500 | High Sierra, Sierra Classic, Sierra Grande, Base |
| 1963 - 1966 | GMC | G1000 Series | Base |
| 1975 - 1978 | GMC | G15 | Rally, Vandura, Rally STX |
| 1967 | GMC | G15/G1500 Van | Base |
| 1972 - 1974 | GMC | G15/G1500 Van | Rally, Vandura |
| 1983 - 1984 | GMC | G1500 | Rally Custom |
| 1979 - 1984 | GMC | G1500 | Rally, Rally STX, Vandura |
| 1978 | GMC | G25 | Rally STX, Rally, Vandura |
| 1967 - 1972 | GMC | G25/G2500 Van | Base |
| 1972 - 1974 | GMC | G25/G2500 Van | Rally, Vandura |
| 1983 - 1984 | GMC | G2500 | Rally Custom |
| 1979 - 1984 | GMC | G2500 | Vandura, Rally STX, Rally |
| 1978 | GMC | G35 | Rally STX, Rally, Vandura, Magnavan, Vandura Special, Rally Camper Special |
| 1970 - 1974 | GMC | G35/G3500 Van | Base |
| 1971 - 1974 | GMC | G35/G3500 Van | Vandura, Rally |
| 1979 - 1984 | GMC | G3500 | Rally Camper Special, Vandura, Vandura Special, Rally STX, Magnavan, Rally |
| 1982 - 1984 | GMC | G3500 | Rally Custom |
| 1964 - 1966 | GMC | I1000 | Base |
| 1965 - 1966 | GMC | I1500 | Base |
| 1965 - 1966 | GMC | I2500 | Base |
| 1966 | GMC | I3500 | Base |
| 1970 - 1982 | GMC | Jimmy | Base |
| 1975 - 1982 | GMC | Jimmy | Sierra Classic, High Sierra, Sierra Grande |
| 1978 - 1982 | GMC | Jimmy | Street Coupe |
| 1977 | GMC | K15 | Indy Hauler |
| 1975 - 1978 | GMC | K15 | Sierra Grande, Base, Sierra Classic, High Sierra |
| 1975 - 1978 | GMC | K15 Suburban | Sierra Classic, High Sierra, Base, Sierra Grande |
| 1967 - 1974 | GMC | K15/K1500 Pickup | Base |
| 1967 - 1974 | GMC | K15/K1500 Suburban | Base |
| 1979 - 1984 | GMC | K1500 | High Sierra, Sierra Classic, Base |
| 1979 - 1982 | GMC | K1500 | Sierra Grande |
| 1979 - 1980 | GMC | K1500 Suburban | Sierra Classic, Sierra Grande, High Sierra, Base |
| 1975 - 1978 | GMC | K25 | Sierra Grande, Base, Sierra Classic, High Sierra |
| 1967 - 1974 | GMC | K25/K2500 Pickup | Base |
| 1967 - 1974 | GMC | K25/K2500 Suburban | Base |
| 1980 | GMC | K2500 | High Sierra, Sierra Classic, Sierra Grande, Base |
| 1968 - 1974 | GMC | K35/K3500 Pickup | Base |
| 1966 - 1967 | GMC | LI3500 | Base |
| 1966 | GMC | P1000 | Base |
| 1973 - 1974 | GMC | P15/P1500 Van | Base |
| 1967 - 1974 | GMC | P25/P2500 Van | Base |
| 1967 - 1974 | GMC | P35/P3500 Van | Base |
| 1974 | GMC | P35/P3500 Van | Motorhome |
| 1963 - 1966 | GMC | PB1000 Series | Base |
| 1966 | GMC | PB15 Series | Base |
| 1963 - 1965 | GMC | PB1500 Series | Base |
| 1966 | GMC | PB25 Series | Base |
| 1963 - 1965 | GMC | PB2500 Series | Base |
| 1966 | GMC | PB2500 Van | Base |
| 1966 | GMC | PB3500 Van | Base |
| 1971 - 1977 | GMC | Sprint | Base |
| 1975 - 1977 | GMC | Sprint | Classic |
| 1972 - 1974 | GMC | Sprint | Custom |
| 1975 | GMC | Sprint | High Sierra |
| 1976 | GMC | Sprint | Sierra Madre Del Sur |
| 1975 - 1976 | GMC | Sprint | SP |
| 1963 - 1966 | GMC | Suburban | Base |
| 1975 | Oldsmobile | Cutlass | 442 |
| 1967 - 1975 | Oldsmobile | Cutlass | Base |
| 1967 | Oldsmobile | Cutlass | Holiday, Turnpike Cruiser |
| 1968 - 1976 | Oldsmobile | Cutlass | S |
| 1976 | Oldsmobile | Cutlass | Vista Cruiser, Colonnade S |
| 1975 - 1976 | Oldsmobile | Cutlass Supreme | Base |
| 1976 | Oldsmobile | Cutlass Supreme | Colonnade |
| 1975 | Oldsmobile | Cutlass Supreme | Hurst, Cruiser |
| 1966 - 1971 | Oldsmobile | F85 | Base |
| 1966 | Oldsmobile | F85 | Deluxe, Holiday |
| 1973 - 1976 | Oldsmobile | Omega | Base |
| 1975 | Oldsmobile | Omega | Salon |
| 1976 | Oldsmobile | Omega | SX, Brougham, F85 |
| 1974 | Pontiac | Catalina | Base, Safari |
| 1970 - 1976 | Pontiac | Firebird | Esprit, Formula, Trans Am, Base |
| 1975 - 1976 | Pontiac | Grand LeMans | Base |
| 1976 | Pontiac | Grand LeMans | LE, BR |
| 1975 | Pontiac | Grand LeMans | Safari |
| 1968 - 1976 | Pontiac | LeMans | Base |
| 1972 - 1974 | Pontiac | LeMans | Luxury |
| 1969 - 1975 | Pontiac | LeMans | Safari |
| 1974 | Pontiac | LeMans | Safari Luxury |
| 1970 - 1976 | Pontiac | LeMans | Sport |
| 1976 | Pontiac | LeMans | Sport Coupe |
| 1971 | Pontiac | LeMans | T37 |
| 1970 | Pontiac | Tempest | GT, Base |
| 1971 - 1976 | Pontiac | Ventura | Base |
| 1973 - 1975 | Pontiac | Ventura | Custom |
| 1974 | Pontiac | Ventura | GTO |
| 1975 | Pontiac | Ventura | S |
| 1975 - 1976 | Pontiac | Ventura | SJ |
| 1965 - 1966 | Studebaker | Commander | Base |
| 1965 - 1966 | Studebaker | Cruiser | Base |
| 1965 - 1966 | Studebaker | Daytona | Base |
| 1966 | Studebaker | Wagonaire | Base |