Magnum, 305H: Cam & Lifters
Lifter Type: Hydraulic Lifter
Engine Family: Pontiac 265-455 c.i. 8 cyl. 1955-1981
Description: Hydraulic-Racy idle. Bracket Racing cam. Needs 10.5:1 compression and 3500 stall. Low gear ratio..
Cam Family: Magnum" Hydraulic Flat Tappet Camshafts
RPM Range: 3000 to 6500
Valve Timing: 0.006
Lobe Separation: 110°
Valve Lash: Hyd Intake/Hyd Exhaust
Duration: 305 Intake/305 Exhaust
Duration @ .050" Lift: 253 Intake/253 Exhaust
Valve Lift:0.525 Intake/0.525 Exhaust
Vehicle Fitments:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1980 | Buick | Century | Base, Estate |
| 1979 | Buick | Century | Special, Custom |
| 1979 - 1980 | Buick | Century | Sport, Limited |
| 1980 | Buick | Electra | Park Avenue, Estate Wagon, Limited |
| 1980 | Buick | Estate Wagon | Base |
| 1977 - 1980 | Buick | LeSabre | Base |
| 1977 - 1978 | Buick | LeSabre | Custom |
| 1977 | Buick | LeSabre | Custom Sport |
| 1979 - 1980 | Buick | LeSabre | Limited |
| 1978 - 1980 | Buick | LeSabre | Sport |
| 1979 - 1980 | Buick | Regal | Limited, Sport, Base |
| 1977 | Buick | Skylark | SR, Base, S |
| 1979 | Oldsmobile | Delta 88 | Base, Royale |
| 1976 - 1980 | Pontiac | Bonneville | Brougham |
| 1959 - 1962 | Pontiac | Bonneville | Custom |
| 1959 - 1980 | Pontiac | Bonneville | Safari, Base |
| 1964 - 1967 | Pontiac | Catalina | 2+2 |
| 1959 - 1980 | Pontiac | Catalina | Base, Safari |
| 1971 - 1972 | Pontiac | Catalina | Brougham |
| 1962 - 1970 | Pontiac | Catalina | Ventura |
| 1967 - 1970 | Pontiac | Executive | Base, Safari |
| 1967 | Pontiac | Firebird | 326 |
| 1968 - 1969 | Pontiac | Firebird | 350 |
| 1969 | Pontiac | Firebird | 350 HO |
| 1967 - 1969 | Pontiac | Firebird | 400, Sprint |
| 1967 - 1981 | Pontiac | Firebird | Base |
| 1970 - 1981 | Pontiac | Firebird | Formula, Esprit |
| 1967 - 1968 | Pontiac | Firebird | HO |
| 1969 - 1981 | Pontiac | Firebird | Trans Am |
| 1973 - 1980 | Pontiac | Grand Am | Base |
| 1975 - 1981 | Pontiac | Grand LeMans | Base, Safari |
| 1976 | Pontiac | Grand LeMans | BR |
| 1976 - 1981 | Pontiac | Grand LeMans | LE |
| 1981 | Pontiac | Grand LeMans | SA |
| 1962 - 1980 | Pontiac | Grand Prix | Base |
| 1975 - 1980 | Pontiac | Grand Prix | LJ, SJ |
| 1971 - 1978 | Pontiac | Grand Safari | Base |
| 1971 - 1974 | Pontiac | Grandville | Base |
| 1975 | Pontiac | Grandville | Brougham |
| 1964 - 1973 | Pontiac | GTO | Base |
| 1970 - 1971 | Pontiac | GTO | The Judge |
| 1963 - 1981 | Pontiac | LeMans | Base |
| 1972 - 1974 | Pontiac | LeMans | Luxury |
| 1969 - 1981 | Pontiac | LeMans | Safari |
| 1974 | Pontiac | LeMans | Safari Luxury |
| 1970 - 1977 | Pontiac | LeMans | Sport |
| 1976 - 1977 | Pontiac | LeMans | Sport Coupe |
| 1971 | Pontiac | LeMans | T37 |
| 1959 - 1966 | Pontiac | Star Chief | Base |
| 1966 | Pontiac | Star Chief | Executive |
| 1961 - 1970 | Pontiac | Tempest | Base |
| 1970 | Pontiac | Tempest | GT |
| 1961 - 1962 | Pontiac | Tempest | LeMans |
| 1961 - 1969 | Pontiac | Tempest | Safari, Custom |
| 1960 - 1977 | Pontiac | Ventura | Base |
| 1973 - 1975 | Pontiac | Ventura | Custom |
| 1974 | Pontiac | Ventura | GTO |
| 1975 | Pontiac | Ventura | S |
| 1975 - 1977 | Pontiac | Ventura | SJ |