Shift Improver Kit Automatic Transmission Shift Kit
The B&M Shift Improver kits feature two options to recalibrating your 1965-1987 GM TH400, TH375 and TH475 automatic transmissions. First is the HEAVY DUTY set-up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET/STRIP set-up. Be warned, this will deliver firm positive shifts you will feel, along with easily chirping the tires when shifting somewhat aggressively. This setting is recommend for high performance street/strip use, or for competitive events when you want the hardest, quickest shifts possible from a shift improver kit.
This Part Fits:
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1969-1974,1987 | Chevrolet | Blazer | |
| 1975-1986 | Chevrolet | C10 | |
| 1967-1984 | Chevrolet | C10 Suburban | |
| 1975-1986 | Chevrolet | C20 | |
| 1967-1986 | Chevrolet | C20 Suburban | |
| 1975-1986 | Chevrolet | C30 | |
| 1977-1987 | Chevrolet | G10 | |
| 1975-1987 | Chevrolet | G20 | |
| 1975-1987 | Chevrolet | G30 | |
| 1977-1982,1984-1986 | Chevrolet | K10 | |
| 1983 | Chevrolet | K10 | Custom |
| 1983 | Chevrolet | K10 | Scottsdale |
| 1983 | Chevrolet | K10 | Silverado |
| 1967-1974,1977-1984 | Chevrolet | K10 Suburban | |
| 1975-1986 | Chevrolet | K20 | |
| 1967-1986 | Chevrolet | K20 Suburban | |
| 1977-1986 | Chevrolet | K30 | |
| 1977-1986 | Chevrolet | K5 Blazer | |
| 1975-1987 | Chevrolet | P20 | |
| 1975-1987 | Chevrolet | P30 | |
| 1987 | Chevrolet | R10 | |
| 1987 | Chevrolet | R20 | |
| 1987 | Chevrolet | R20 Suburban | |
| 1987 | Chevrolet | R30 | |
| 1987 | Chevrolet | V10 | |
| 1987 | Chevrolet | V20 | |
| 1987 | Chevrolet | V20 Suburban | |
| 1987 | Chevrolet | V30 | |
| 1979-1986 | GMC | C1500 | |
| 1979-1984 | GMC | C1500 Suburban | |
| 1979-1986 | GMC | C2500 | |
| 1979-1986 | GMC | C2500 Suburban | |
| 1979-1986 | GMC | C3500 | |
| 1979-1987 | GMC | G1500 | |
| 1979-1987 | GMC | G2500 | |
| 1979-1980,1983-1984,1986 | GMC | G3500 | |
| 1970-1974,1977-1987 | GMC | Jimmy | |
| 1979-1986 | GMC | K1500 | |
| 1979-1984 | GMC | K1500 Suburban | |
| 1979-1986 | GMC | K2500 | |
| 1979-1986 | GMC | K2500 Suburban | |
| 1979-1986 | GMC | K3500 | |
| 1979-1980 | GMC | P1500 | |
| 1979-1987 | GMC | P2500 | |
| 1979-1987 | GMC | P3500 | |
| 1987 | GMC | R1500 | |
| 1987 | GMC | R2500 | |
| 1987 | GMC | R2500 Suburban | |
| 1987 | GMC | R3500 | |
| 1987 | GMC | V1500 | |
| 1987 | GMC | V2500 | |
| 1987 | GMC | V2500 Suburban | |
| 1987 | GMC | V3500 |