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Fits 1980 to 1984 Buick Century, Electra, Estate Wagon and 2 more models, and 5 more makes. See every vehicle
The B&M® Transpak is the next step up from the B&M Shift Improver kit. It has all the features in the Shift Improver kit, plus it provides additional driver manual control (GM TH-400, 350, Ford C-6 and Chrysler Torqueflite only). B&M® Transpak™ kit for 1980-1986 GM TH350C (Lockup) automatic transmissions. Most stock automatic transmissions won't downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear you're in. With the Transpak, you can downshift at any speed, and you can hold the transmission in first gear to any speed that you want! This is an asset when you've got a modified engine, and you want additional RPMs, or you're towing a trailer or driving heavy loads downhill. Stage 1. Heavy Duty is for street rods, normal passenger vehicles or other heavy duty use. Firmer shift feel but not harsh. Improves transmission performance and life dramatically without loss of comfort and offers normal automatic operation when in Drive. Stage 2 is for Hi-Performance street use. Essentially the same as Heavy Duty mode except shifts are much quicker. Retains full automatic features and standard shift points with selector in Drive. Notes: Does Not Fit 1968-1980 GM TH350 (non-Lock-up) transmissions.
Warranty: Manufacturer's Limited 12 Month Warranty
| Year | Make | Model | Submodel | Engine |
|---|---|---|---|---|
| 1980 | Buick | Century | Base, Estate, Limited | 4.3L 265 V8 |
| 1981 | Buick | Century | Base, Estate, Limited | 5.7L 350 V8 |
| 1980 | Buick | Electra | Estate Wagon, Limited, Park Avenue | 5.7L 350 V8 |
| 1981 | Buick | Electra | Estate Wagon, Limited, Park Avenue | 5.0L 307 V8 |
| 1982 | Buick | Electra | Limited, Park Avenue | 4.1L 252 V6 |
| 1980 - 1983 | Buick | Estate Wagon | Base | 5.7L 350 V8 |
| 1980 | Buick | LeSabre | Base, Limited | 5.7L 350 V8 |
| 1981 | Buick | LeSabre | Base, Limited, Sport | 5.0L 307 V8 |
| 1982 | Buick | LeSabre | Custom, Limited, Limited Edition F/E | 3.8L 231 V6 |
| 1980 | Buick | Regal | Base, Limited | 4.9L 301 V8 |
| 1981 | Buick | Regal | Base, Limited, Sport | 5.7L 350 V8 |
| 1982 - 1983 | Buick | Regal | Base, Estate Wagon, Limited | 5.7L 350 V8 |
| 1984 | Buick | Regal | Base, Grand National, Limited, T-Type | 3.8L 231 V6 |
| 1982 | Cadillac | DeVille | Base, Cabriolet, d'Elegance | 4.1L 250 V8 |
| 1982 | Cadillac | Fleetwood | Brougham, Brougham d'Elegance | 5.7L 350 V8 |
| 1982 - 1984 | Chevrolet | C10 | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1986 | Chevrolet | C10 | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1982 | Chevrolet | C10 Suburban | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1983 | Chevrolet | C10 Suburban | Custom, Silverado | 5.7L 350 V8 |
| 1984 | Chevrolet | C10 Suburban | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1982 - 1984 | Chevrolet | C20 | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1986 | Chevrolet | C20 | Base, Cheyenne, Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1982 | Chevrolet | C20 Suburban | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1983 | Chevrolet | C20 Suburban | Custom, Silverado | 5.7L 350 V8 |
| 1984 | Chevrolet | C20 Suburban | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1986 | Chevrolet | C20 Suburban | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1982 - 1984 | Chevrolet | C30 | Custom, Scottsdale, Silverado | 7.4L 454 V8 |
| 1986 | Chevrolet | C30 | Custom, Scottsdale, Silverado | 7.4L 454 V8 |
| 1981 | Chevrolet | Camaro | Berlinetta, Sport, Z28 | 5.7L 350 V8 |
| 1980 | Chevrolet | Caprice | Base, Classic, Classic Landau, Classic Sport | 5.7L 350 V8 |
| 1981 | Chevrolet | Caprice | Base, Classic, Classic Estate, Classic Landau | 5.7L 350 V8 |
| 1982 | Chevrolet | Caprice | Base, Classic, Classic Estate | 5.7L 350 V8 |
| 1983 - 1984 | Chevrolet | Caprice | Classic | 5.7L 350 V8 |
| 1981 | Chevrolet | Corvette | Base | 5.7L 350 V8 |
| 1980 | Chevrolet | El Camino | Base, Royal Knight, SS | 5.0L 305 V8 |
| 1981 | Chevrolet | El Camino | Base, Conquista, Royal Knight, SS | 5.0L 305 V8 |
| 1982 | Chevrolet | El Camino | Base, Conquista, SS | 5.0L 305 V8 |
| 1983 - 1984 | Chevrolet | El Camino | Base, Conquista, SS | 5.7L 350 V8 |
| 1982 | Chevrolet | G10 | Sportvan | 5.7L 350 V8 |
| 1984 | Chevrolet | G10 | Sportvan | 5.7L 350 V8 |
| 1986 | Chevrolet | G10 | Bonaventure, Sportvan | 5.7L 350 V8 |
| 1982 | Chevrolet | G20 | Beauville, Chevy Van, Sportvan | 5.7L 350 V8 |
| 1984 | Chevrolet | G20 | Beauville, Bonaventure, Chevy Van, Sportvan | 5.7L 350 V8 |
| 1986 | Chevrolet | G20 | Beauville, Chevy Van, Sportvan | 5.7L 350 V8 |
| 1982 | Chevrolet | G30 | Beauville, Chevy Van, Hi-Cube, Sportvan | 5.7L 350 V8 |
| 1984 | Chevrolet | G30 | Beauville, Bonaventure, Chevy Van, Hi-Cube, Sportvan | 5.7L 350 V8 |
| 1986 | Chevrolet | G30 | Beauville, Chevy Van, Hi-Cube, Sportvan | 5.7L 350 V8 |
| 1980 | Chevrolet | Impala | Base, Sport | 5.7L 350 V8 |
| 1981 - 1982 | Chevrolet | Impala | Base, Estate | 5.7L 350 V8 |
| 1983 - 1984 | Chevrolet | Impala | Base | 5.7L 350 V8 |
| 1982 | Chevrolet | K10 | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1986 | Chevrolet | K10 | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1982 | Chevrolet | K10 Suburban | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1981 | Chevrolet | K20 | Cheyenne, Custom, Deluxe, Scottsdale, Silverado | 5.7L 350 V8 |
| 1982 | Chevrolet | K20 | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1986 | Chevrolet | K20 | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1982 | Chevrolet | K20 Suburban | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1986 | Chevrolet | K20 Suburban | Custom, Scottsdale, Silverado | 5.7L 350 V8 |
| 1982 | Chevrolet | K30 | Custom, Scottsdale, Silverado | 7.4L 454 V8 |
| 1986 | Chevrolet | K30 | Custom, Scottsdale, Silverado | 7.4L 454 V8 |
| 1982 | Chevrolet | K5 Blazer | Custom, Silverado | 5.7L 350 V8 |
| 1986 | Chevrolet | K5 Blazer | Custom, Silverado | 5.7L 350 V8 |
| 1980 | Chevrolet | Malibu | Base, Estate, Sport | 5.7L 350 V8 |
| 1981 | Chevrolet | Malibu | Base, Classic, Classic Landau | 5.0L 305 V8 |
| 1982 | Chevrolet | Malibu | Classic | 5.7L 350 V8 |
| 1983 | Chevrolet | Malibu | Classic | 5.0L 305 V8, 5.7L 350 V8 |
| 1980 | Chevrolet | Monte Carlo | Landau, Sport | 5.0L 305 V8 |
| 1982 | Chevrolet | Monte Carlo | Base | 5.7L 350 V8 |
| 1983 | Chevrolet | Monte Carlo | Base, CL, SS | 5.7L 350 V8 |
| 1984 | Chevrolet | Monte Carlo | Base | 5.7L 350 V8 |
| 1982 | GMC | C1500 | Base, High Sierra, Sierra Classic, Sierra Grande, Street Coupe | 5.7L 350 V8 |
| 1983 - 1984 | GMC | C1500 | Base, High Sierra, Sierra Classic | 5.7L 350 V8 |
| 1986 | GMC | C1500 | Base, High Sierra, Sierra Classic | 5.7L 350 V8 |
| 1982 | GMC | C1500 Suburban | Base, High Sierra, Sierra Classic, Sierra Grande | 5.7L 350 V8 |
| 1983 - 1984 | GMC | C1500 Suburban | Base, High Sierra, Sierra Classic | 5.7L 350 V8 |
| 1982 | GMC | C2500 | Base, High Sierra, Sierra Classic, Sierra Grande | 5.7L 350 V8 |
| 1983 - 1984 | GMC | C2500 | Base, High Sierra, Sierra Classic | 5.7L 350 V8 |
| 1986 | GMC | C2500 | Base, High Sierra, Sierra Classic | 5.7L 350 V8 |
| 1982 | GMC | C2500 Suburban | Base, High Sierra, Sierra Classic, Sierra Grande | 5.7L 350 V8 |
| 1983 - 1984 | GMC | C2500 Suburban | Base, High Sierra, Sierra Classic | 5.7L 350 V8 |
| 1986 | GMC | C2500 Suburban | Base, High Sierra, Sierra Classic | 5.7L 350 V8 |
| 1982 | GMC | C3500 | Base, High Sierra, Sierra Classic, Sierra Grande | 7.4L 454 V8 |
| 1983 - 1984 | GMC | C3500 | Base, High Sierra, Sierra Classic | 7.4L 454 V8 |
| 1986 | GMC | C3500 | Base, High Sierra, Sierra Classic | 7.4L 454 V8 |
| 1981 | GMC | Caballero | Amarillo, Base, Conquista, Diablo, Royal Knight | 3.8L 229 V6, 3.8L 231 V6, 4.4L 267 V8, 5.0L 305 V8 |
| 1982 | GMC | Caballero | Amarillo, Base, Diablo | 3.8L 229 V6, 3.8L 231 V6, 4.4L 267 V8, 5.0L 305 V8 |
| 1983 - 1984 | GMC | Caballero | Amarillo, Base, Diablo | 3.8L 229 V6, 3.8L 231 V6, 5.0L 305 V8, 5.7L 350 V8 |
| 1982 | GMC | G1500 | Rally, Rally STX | 5.7L 350 V8 |
| 1984 | GMC | G1500 | Rally, Rally Custom, Rally STX | 5.7L 350 V8 |
| 1986 | GMC | G1500 | Rally, Rally STX | 5.7L 350 V8 |
| 1982 | GMC | G2500 | Rally, Rally STX | 5.7L 350 V8 |
| 1984 | GMC | G2500 | Rally, Rally Custom, Rally STX, Vandura | 5.7L 350 V8 |
| 1986 | GMC | G2500 | Rally, Rally STX, Vandura | 5.7L 350 V8 |
| 1982 | GMC | G3500 | Magnavan, Rally, Rally Camper Special, Rally Custom, Rally STX, Vandura, Vandura Special | 5.7L 350 V8 |
| 1984 | GMC | G3500 | Magnavan, Rally, Rally Camper Special, Rally Custom, Rally STX, Vandura, Vandura Special | 5.7L 350 V8 |
| 1986 | GMC | G3500 | Magnavan, Rally, Rally Camper Special, Rally Custom, Rally STX, Vandura, Vandura Special | 5.7L 350 V8 |
| 1982 | GMC | Jimmy | Base, High Sierra, Sierra Classic, Sierra Grande, Street Coupe | 5.7L 350 V8 |
| 1986 | GMC | Jimmy | Base, Sierra Classic, Silverado | 5.7L 350 V8 |
| 1982 | GMC | K1500 | Base, High Sierra, Sierra Classic, Sierra Grande | 5.7L 350 V8 |
| 1986 | GMC | K1500 | Base, High Sierra, Sierra Classic | 5.7L 350 V8 |
| 1982 | GMC | K1500 Suburban | Base, High Sierra, Sierra Classic, Sierra Grande | 5.0L 305 V8, 5.7L 350 V8, 6.2L 379 V8 |
| 1982 | GMC | K2500 | Base, High Sierra, Sierra Classic, Sierra Grande | 5.7L 350 V8 |
| 1986 | GMC | K2500 | Base, High Sierra, Sierra Classic | 5.7L 350 V8 |
| 1982 | GMC | K2500 Suburban | Base, High Sierra, Sierra Classic, Sierra Grande | 4.8L 292 I6, 5.7L 350 V8, 6.2L 379 V8 |
| 1986 | GMC | K2500 Suburban | Base, High Sierra, Sierra Classic | 5.7L 350 V8, 6.2L 379 V8 |
| 1982 | GMC | K3500 | Base, High Sierra, Sierra Classic, Sierra Grande | 4.8L 292 I6, 5.7L 350 V8, 6.2L 379 V8, 7.4L 454 V8 |
| 1986 | GMC | K3500 | Base, High Sierra, Sierra Classic | 4.8L 292 I6, 5.7L 350 V8, 6.2L 379 V8, 7.4L 454 V8 |
| 1980 | Oldsmobile | 98 | Luxury, Regency | 5.0L 307 V8, 5.7L 350 V8 |
| 1981 | Oldsmobile | 98 | Luxury, Regency | 4.1L 252 V6, 5.0L 307 V8, 5.7L 350 V8 |
| 1982 - 1983 | Oldsmobile | 98 | Regency, Regency Brougham | 4.1L 252 V6, 5.0L 307 V8, 5.7L 350 V8 |
| 1980 - 1983 | Oldsmobile | Custom Cruiser | Base | 5.0L 307 V8, 5.7L 350 V8 |
| 1980 | Oldsmobile | Cutlass | Base, Brougham, LS | 3.8L 231 V6, 4.3L 260 V8, 5.0L 305 V8, 5.7L 350 V8 |
| 1981 | Oldsmobile | Cutlass | Brougham, LS, Supreme | 3.8L 231 V6, 4.3L 260 V8, 4.4L 267 V8, 5.7L 350 V8 |
| 1980 | Oldsmobile | Cutlass Calais | Base | 3.8L 231 V6, 4.3L 260 V8, 5.0L 305 V8, 5.7L 350 V8 |
| 1981 | Oldsmobile | Cutlass Calais | Base | 3.8L 231 V6, 4.3L 260 V8, 5.7L 350 V8 |
| 1982 | Oldsmobile | Cutlass Calais | Base | 3.8L 231 V6, 4.3L 260 V6, 4.3L 260 V8, 4.4L 267 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1983 - 1984 | Oldsmobile | Cutlass Calais | Base, Hurst | 3.8L 231 V6, 4.3L 260 V6, 5.0L 305 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1980 | Oldsmobile | Cutlass Cruiser | Base, Brougham | 3.8L 231 V6, 4.3L 260 V8, 5.0L 305 V8, 5.7L 350 V8 |
| 1981 | Oldsmobile | Cutlass Cruiser | Base, Brougham | 3.8L 231 V6, 4.3L 260 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1982 | Oldsmobile | Cutlass Cruiser | Base | 3.8L 231 V6, 4.3L 260 V8, 4.4L 267 V8, 5.0L 305 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1983 | Oldsmobile | Cutlass Cruiser | Base | 3.8L 231 V6, 5.0L 305 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1980 | Oldsmobile | Cutlass Salon | Base, Brougham | 3.8L 231 V6, 4.3L 260 V8, 5.0L 305 V8, 5.7L 350 V8 |
| 1980 | Oldsmobile | Cutlass Supreme | Base, Brougham | 3.8L 231 V6, 4.3L 260 V8, 5.0L 305 V8, 5.7L 350 V8 |
| 1981 | Oldsmobile | Cutlass Supreme | Base, Brougham, LS | 3.8L 231 V6, 4.3L 260 V8, 5.7L 350 V8 |
| 1982 | Oldsmobile | Cutlass Supreme | Base, Brougham | 3.8L 231 V6, 4.3L 260 V6, 4.3L 260 V8, 4.4L 267 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1983 | Oldsmobile | Cutlass Supreme | Base, Brougham | 3.8L 231 V6, 4.3L 260 V6, 5.0L 305 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1984 | Oldsmobile | Cutlass Supreme | Base, Brougham | 3.8L 231 V6, 4.3L 260 V6, 5.0L 307 V8, 5.7L 350 V8 |
| 1980 | Oldsmobile | Delta 88 | Base, Holiday, Royale, Royale Brougham | 3.8L 231 V6, 4.3L 260 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1981 | Oldsmobile | Delta 88 | Base, Holiday, Royale, Royale Brougham | 3.8L 231 V6, 4.3L 260 V8, 4.4L 267 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1982 | Oldsmobile | Delta 88 | Base, Royale, Royale Brougham | 3.8L 231 V6, 4.3L 260 V8, 4.4L 267 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1983 | Oldsmobile | Delta 88 | Base, Royale, Royale Brougham | 3.8L 231 V6, 5.0L 307 V8, 5.7L 350 V8 |
| 1982 - 1983 | Oldsmobile | Toronado | Brougham | 4.1L 252 V6, 5.0L 307 V8, 5.7L 350 V8 |
| 1980 | Pontiac | Bonneville | Base, Brougham, Safari | 3.8L 231 V6, 4.3L 265 V8, 4.9L 301 V8, 5.7L 350 V8 |
| 1981 | Pontiac | Bonneville | Base, Brougham, Safari | 3.8L 231 V6, 4.3L 265 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1982 | Pontiac | Bonneville | Base, Brougham | 3.8L 231 V6, 4.1L 252 V6, 5.7L 350 V8 |
| 1983 | Pontiac | Bonneville | Base, Brougham | 3.8L 231 V6, 5.0L 305 V8, 5.7L 350 V8 |
| 1984 | Pontiac | Bonneville | Base, Brougham, LE | 3.8L 231 V6, 5.0L 305 V8, 5.7L 350 V8 |
| 1980 | Pontiac | Catalina | Base, Safari | 3.8L 229 V6, 3.8L 231 V6, 4.3L 265 V8, 4.4L 267 V8, 4.9L 301 V8, 5.0L 305 V8, 5.7L 350 V8 |
| 1981 | Pontiac | Catalina | Base, Safari | 3.8L 231 V6, 4.3L 265 V8, 4.4L 267 V8, 5.0L 305 V8, 5.0L 307 V8, 5.7L 350 V8 |
| 1981 | Pontiac | Firebird | Base, Esprit, Formula, Trans Am | 3.8L 231 V6, 4.3L 265 V8, 4.4L 267 V8, 4.9L 301 V8, 5.0L 305 V8 |
| 1980 | Pontiac | Grand Am | Base | 4.9L 301 V8, 5.0L 305 V8 |
| 1980 | Pontiac | Grand LeMans | Base, LE, Safari | 3.8L 229 V6, 3.8L 231 V6, 4.3L 265 V8, 4.4L 267 V8, 4.9L 301 V8, 5.0L 305 V8 |
| 1981 | Pontiac | Grand LeMans | Base, LE, SA, Safari | 3.8L 229 V6, 3.8L 231 V6, 4.3L 265 V8, 4.4L 267 V8, 4.9L 301 V8, 5.0L 305 V8 |
| 1980 | Pontiac | Grand Prix | Base, LJ, SJ | 3.8L 231 V6, 4.3L 265 V8, 4.9L 301 V8, 5.0L 305 V8 |
| 1981 | Pontiac | Grand Prix | Base, Brougham, LJ | 3.8L 231 V6, 4.3L 265 V8, 4.4L 267 V8, 5.7L 350 V8 |
| 1982 | Pontiac | Grand Prix | Base, Brougham, LJ | 3.8L 231 V6, 4.1L 252 V6, 4.4L 267 V8, 5.7L 350 V8 |
| 1983 | Pontiac | Grand Prix | Base, Brougham, LJ | 3.8L 231 V6, 5.0L 305 V8, 5.7L 350 V8 |
| 1984 | Pontiac | Grand Prix | Base, Brougham, LE | 3.8L 231 V6, 5.0L 305 V8, 5.7L 350 V8 |
| 1980 - 1981 | Pontiac | LeMans | Base, Safari | 3.8L 229 V6, 3.8L 231 V6, 4.3L 265 V8, 4.4L 267 V8, 4.9L 301 V8, 5.0L 305 V8 |
| 1983 - 1984 | Pontiac | Parisienne | Base, Brougham | 3.8L 231 V6, 5.0L 305 V8, 5.7L 350 V8 |