
Hooker 12647HKR - Engine Swap Crossmember Adapter Kit
Hooker LS Engine Swap Transmission Crossmembers are made from high-strength, low-alloy steel and then black powdercoated for maximum durability. They provide an engineered 3 to 3. 5 degree engine/transmission inclination angle that is critical for obtaining suitable U-joint working angles. Integral component of the complete Hooker swap system for this application. Component features unique geometry that is not compatible for use with any other brand of engine mounting components. Direct bolt-in installation on 70-74 subframes, installation on 75-81 subframes requires four horizontal holes to be drilled in subframe sidewall, no hole sawing or vertical drilling required.
Key Features:- Engine Swap Crossmember
- Crossmember Adapter For GM G-Body

The Hooker line of Super Competition and Competition headers, mufflers and cat-back exhaust systems are the most complete and wanted on the market. Since the golden era of drag racing in the 1960, Hooker has helped more racers than any other header company. Hooker became part of Holley's family in 1999.
Year | Make | Model | Submodel | Engine Size |
---|---|---|---|---|
1978 | BUICK | REGAL | BASE, LIMITED, SPORT | 3.2L V6 GAS, 3.8L V6 GAS, 5.0L V8 GAS |
1979 | BUICK | REGAL | BASE, LIMITED, SPORT | 3.2L V6 GAS, 3.8L V6 GAS, 4.9L V8 GAS, 5.0L V8 GAS |
1980 | BUICK | REGAL | BASE, LIMITED, SPORT | 3.8L V6 GAS, 4.3L V8 GAS, 4.9L V8 GAS, 5.0L V8 GAS |
1981 | BUICK | REGAL | BASE, LIMITED, SPORT | 3.8L V6 GAS, 4.3L V8 GAS, 5.7L V8 Diesel |
1982 | BUICK | REGAL | BASE, Estate Wagon, LIMITED, Limited Turbo, SPORT | 3.8L V6 GAS, 4.1L V6 GAS, 4.3L V6 Diesel, 5.7L V8 Diesel |
1983 | BUICK | REGAL | BASE, Estate Wagon, LIMITED, T-Type | 3.8L V6 GAS, 4.1L V6 GAS, 4.3L V6 Diesel, 5.7L V8 Diesel |
1984 | BUICK | REGAL | BASE, Grand National, LIMITED, T-Type | 3.8L V6 GAS, 4.1L V6 GAS, 4.3L V6 Diesel, 5.7L V8 Diesel |
1985 | BUICK | REGAL | BASE, Grand National, LIMITED, T-Type | 3.8L V6 GAS, 4.3L V6 Diesel, 5.7L V8 Diesel |
1986 | BUICK | REGAL | BASE, Grand National, LIMITED, T-Type | 3.8L V6 GAS, 5.0L V8 GAS |
1987 | BUICK | REGAL | BASE, GNX, Grand National, LIMITED | 3.8L V6 GAS, 5.0L V8 GAS |
1978 | CHEVROLET | EL CAMINO | BASE, Conquista, SS | 3.3L V6 GAS, 3.8L V6 GAS, 5.0L V8 GAS, 5.7L V8 GAS |
1979 | CHEVROLET | EL CAMINO | BASE, Conquista, ROYAL KNIGHT, SS | 3.3L V6 GAS, 3.8L V6 GAS, 4.4L V8 GAS, 5.0L V8 GAS, 5.7L V8 GAS |
1980 - 1981 | CHEVROLET | EL CAMINO | BASE, Conquista, ROYAL KNIGHT, SS | 3.8L V6 GAS, 4.4L V8 GAS, 5.0L V8 GAS |
1982 | CHEVROLET | EL CAMINO | BASE, Conquista, SS | 3.8L V6 GAS, 4.4L V8 GAS, 5.0L V8 GAS |
1983 - 1984 | CHEVROLET | EL CAMINO | BASE, Conquista, SS | 3.8L V6 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1985 - 1986 | CHEVROLET | EL CAMINO | BASE, Conquista, SS | 4.3L V6 GAS, 5.0L V8 GAS |
1987 | CHEVROLET | EL CAMINO | BASE, SS | 4.3L V6 GAS, 5.0L V8 GAS |
1978 | CHEVROLET | MONTE CARLO | Landau, SPORT | 3.3L V6 GAS, 3.8L V6 GAS, 5.0L V8 GAS |
1979 | CHEVROLET | MONTE CARLO | BASE, Landau, SPORT | 3.3L V6 GAS, 3.8L V6 GAS, 4.4L V8 GAS, 5.0L V8 GAS |
1980 | CHEVROLET | MONTE CARLO | BASE, Landau, SPORT | 3.8L V6 GAS, 4.4L V8 GAS, 5.0L V8 GAS |
1981 | CHEVROLET | MONTE CARLO | BASE, Landau | 3.8L V6 GAS, 4.4L V8 GAS, 5.0L V8 GAS |
1982 | CHEVROLET | MONTE CARLO | BASE | 3.8L V6 GAS, 4.3L V6 Diesel, 4.4L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1983 | CHEVROLET | MONTE CARLO | BASE, CL, SS | 3.8L V6 GAS, 4.3L V6 Diesel, 5.0L V8 GAS, 5.7L V8 Diesel |
1984 | CHEVROLET | MONTE CARLO | BASE, SS | 3.8L V6 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1985 | CHEVROLET | MONTE CARLO | BASE, SS | 4.3L V6 GAS, 5.0L V8 GAS |
1986 - 1987 | CHEVROLET | MONTE CARLO | BASE, LS, SS | 4.3L V6 GAS, 5.0L V8 GAS |
1978 | OLDSMOBILE | CUTLASS | Vista Cruiser | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 GAS |
1979 | OLDSMOBILE | CUTLASS | Vista Cruiser, Vista Cruiser Brougham | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel, 5.7L V8 GAS |
1980 | OLDSMOBILE | CUTLASS | BASE, Brougham, LS | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel, 5.7L V8 GAS |
1981 | OLDSMOBILE | CUTLASS | Brougham, LS | 3.8L V6 GAS, 4.3L V8 GAS, 5.7L V8 Diesel |
1978 | OLDSMOBILE | CUTLASS CALAIS | BASE | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS |
1979 | OLDSMOBILE | CUTLASS CALAIS | BASE | 3.8L V6 GAS, 4.3L V8 Diesel, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 GAS |
1980 | OLDSMOBILE | CUTLASS CALAIS | BASE | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel, 5.7L V8 GAS |
1981 | OLDSMOBILE | CUTLASS CALAIS | BASE | 3.8L V6 GAS, 4.3L V8 GAS, 5.7L V8 Diesel |
1982 | OLDSMOBILE | CUTLASS CALAIS | BASE | 3.8L V6 GAS, 4.3L V6 Diesel, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1983 - 1984 | OLDSMOBILE | CUTLASS CALAIS | BASE, Hurst | 3.8L V6 GAS, 4.3L V6 Diesel, 5.0L V8 GAS, 5.7L V8 Diesel |
1982 | OLDSMOBILE | CUTLASS CIERA | BASE, Brougham, LS | 2.5L L4 GAS, 3.0L V6 GAS, 4.3L V6 Diesel |
1983 | OLDSMOBILE | CUTLASS CIERA | BASE, Brougham, ES, LS | 2.5L L4 GAS, 3.0L V6 GAS, 4.3L V6 Diesel |
1984 | OLDSMOBILE | CUTLASS CIERA | Brougham, Cruiser LS, ES, LS | 2.5L L4 GAS, 3.0L V6 GAS, 3.8L V6 GAS, 4.3L V6 Diesel |
1985 | OLDSMOBILE | CUTLASS CIERA | Brougham, Cruiser LS, ES, GT, Holiday, LS | 2.5L L4 GAS, 3.0L V6 GAS, 3.8L V6 GAS, 4.3L V6 Diesel |
1986 | OLDSMOBILE | CUTLASS CIERA | Brougham, ES, GT, Holiday, LS, S, SL | 2.5L L4 GAS, 2.8L V6 GAS, 3.8L V6 GAS |
1987 | OLDSMOBILE | CUTLASS CIERA | Brougham, GT, LS, S, SL | 2.5L L4 GAS, 2.8L V6 GAS, 3.8L V6 GAS |
1980 | OLDSMOBILE | CUTLASS CRUISER | BASE, Brougham | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel, 5.7L V8 GAS |
1981 | OLDSMOBILE | CUTLASS CRUISER | BASE, Brougham | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1982 | OLDSMOBILE | CUTLASS CRUISER | BASE | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1983 | OLDSMOBILE | CUTLASS CRUISER | BASE | 5.0L V8 GAS, 5.7L V8 Diesel |
1987 | OLDSMOBILE | CUTLASS CRUISER | Brougham, LS | 2.5L L4 GAS, 2.8L V6 GAS, 3.8L V6 GAS |
1978 | OLDSMOBILE | CUTLASS SALON | 442, BASE, Brougham | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS |
1979 | OLDSMOBILE | CUTLASS SALON | 442, BASE, Brougham, Hurst | 3.8L V6 GAS, 4.3L V8 Diesel, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 GAS |
1980 | OLDSMOBILE | CUTLASS SALON | BASE, Brougham | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1981 - 1984 | OLDSMOBILE | CUTLASS SALON | BASE | 3.8L V6 GAS, 5.7L V8 Diesel |
1985 | OLDSMOBILE | CUTLASS SALON | 442, BASE | 3.8L V6 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1986 | OLDSMOBILE | CUTLASS SALON | 442, BASE | 3.8L V6 GAS, 5.0L V8 GAS |
1987 | OLDSMOBILE | CUTLASS SALON | BASE | 3.8L V6 GAS, 5.0L V8 GAS |
1978 | OLDSMOBILE | CUTLASS SUPREME | BASE, Brougham | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 GAS |
1979 | OLDSMOBILE | CUTLASS SUPREME | BASE, Brougham | 3.8L V6 GAS, 4.3L V8 Diesel, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel, 5.7L V8 GAS |
1980 | OLDSMOBILE | CUTLASS SUPREME | BASE, Brougham | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel, 5.7L V8 GAS |
1981 | OLDSMOBILE | CUTLASS SUPREME | BASE, Brougham, LS | 3.8L V6 GAS, 4.3L V8 GAS, 5.7L V8 Diesel |
1982 | OLDSMOBILE | CUTLASS SUPREME | BASE, Brougham, LS | 3.8L V6 GAS, 4.3L V6 Diesel, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1983 - 1984 | OLDSMOBILE | CUTLASS SUPREME | BASE, Brougham, LS | 3.8L V6 GAS, 4.3L V6 Diesel, 5.0L V8 GAS, 5.7L V8 Diesel |
1985 | OLDSMOBILE | CUTLASS SUPREME | BASE, Brougham, LS | 3.8L V6 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1986 | OLDSMOBILE | CUTLASS SUPREME | BASE, Brougham | 3.8L V6 GAS, 5.0L V8 GAS |
1987 | OLDSMOBILE | CUTLASS SUPREME | 442, BASE, Brougham | 3.8L V6 GAS, 5.0L V8 GAS |
1978 - 1979 | PONTIAC | GRAND PRIX | BASE, LJ, SJ | 3.8L V6 GAS, 4.9L V8 GAS, 5.0L V8 GAS |
1980 | PONTIAC | GRAND PRIX | BASE, LJ, SJ | 3.8L V6 GAS, 4.3L V8 GAS, 4.9L V8 GAS, 5.0L V8 GAS |
1981 | PONTIAC | GRAND PRIX | BASE, Brougham, LJ | 3.8L V6 GAS, 4.3L V8 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1982 | PONTIAC | GRAND PRIX | BASE, Brougham, LJ | 3.8L V6 GAS, 4.1L V6 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1983 | PONTIAC | GRAND PRIX | BASE, Brougham, LJ | 3.8L V6 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1984 | PONTIAC | GRAND PRIX | BASE, Brougham, LE | 3.8L V6 GAS, 5.0L V8 GAS, 5.7L V8 Diesel |
1985 | PONTIAC | GRAND PRIX | BASE, Brougham, LE | 3.8L V6 GAS, 5.0L V8 GAS |
1986 - 1987 | PONTIAC | GRAND PRIX | BASE, Brougham, LE | 3.8L V6 GAS, 4.3L V6 GAS, 5.0L V8 GAS |