Soft Lok: Chevrolet 55-85 SBC: 70-90 BBC: 11 x 1-3/16 x 18 Spline: 168T: Aftermarket Transmission
The McLeod Soft Lok assembly is the most widely used McLeod clutch for drag racers. This unit is NOT recommended for street use. As a NHRA and IHRA record holder, this assembly has low static pressure for a light pedal effort and soft clutch engagement. This unit leaves the starting line harder with less tire spin. The Soft Lok is equipped with adjustable spring pressure and is available with counterweights. Included is a pressure plate, sintered iron disc, and aluminum flywheel.
The McLeod Soft Lok assembly is the most widely used McLeod clutch for drag racers. This unit is NOT recommended for street use. As a NHRA and IHRA record holder, this assembly has low static pressure for a light pedal effort and soft clutch engagement. This unit leaves the starting line harder with less tire spin. The Soft Lok is equipped with adjustable spring pressure and is available with counterweights. Included is a pressure plate, sintered iron disc, and aluminum flywheel.
- • Low Static Pressure. • Soft Clutch Engagement. • Leave Line Harder with Less Tire Spin. • Adjustable Spring Pressure. • Available with Counterweights.
Information:
Additional Counter Weight Kit RequiredApplication Summary:
| Year | Make/Model |
|---|---|
| 1957-1973 | Chevrolet Bel Air |
| 1958-1972 | Chevrolet Biscayne |
| 1969-1974 | Chevrolet Blazer |
| 1969-1972 | Chevrolet Brookwood |
| 1975-1985 | Chevrolet C10 |
| 1967-1984 | Chevrolet C10 Suburban |
| 1982-1985 | Chevrolet C15 |
| 1975-1985 | Chevrolet C20 |
| 1967-1984 | Chevrolet C20 Suburban |
| 1975-1985 | Chevrolet C30 |
| 1983-1985 | Chevrolet C35 |
| 1967-1985 | Chevrolet Camaro |
| 1966-1972 | Chevrolet Caprice |
| 1964-1977 | Chevrolet Chevelle |
| 1963-1967 | Chevrolet Chevy II |
| 1957-1961 | Chevrolet Corvette |
| 1965-1981 | Chevrolet Corvette |
| 1984-1985 | Chevrolet Corvette |
| 1958 | Chevrolet Del Ray |
| 1959-1960 | Chevrolet El Camino |
| 1964-1981 | Chevrolet El Camino |
| 1975-1985 | Chevrolet G10 |
| 1975-1985 | Chevrolet G20 |
| 1967-1974 | Chevrolet G20 Van |
| 1975-1985 | Chevrolet G30 |
| 1958-1973 | Chevrolet Impala |
| 1975-1985 | Chevrolet K10 |
| 1967-1984 | Chevrolet K10 Suburban |
| 1975-1985 | Chevrolet K20 |
| 1967-1984 | Chevrolet K20 Suburban |
| 1977-1985 | Chevrolet K30 |
| 1975-1985 | Chevrolet K5 Blazer |
| 1969-1971 | Chevrolet Kingswood |
| 1975 | Chevrolet Malibu |
| 1978-1981 | Chevrolet Malibu |
| 1970-1979 | Chevrolet Monte Carlo |
| 1981 | Chevrolet Monte Carlo |
| 1976-1979 | Chevrolet Monza |
| 1958-1961 | Chevrolet Nomad |
| 1969-1979 | Chevrolet Nova |
| 1957 | Chevrolet One-Fifty Series |
| 1975 | Chevrolet P10 |
| 1977-1979 | Chevrolet P10 |
| 1975-1985 | Chevrolet P20 |
| 1975-1985 | Chevrolet P30 |
| 1957-1958 | Chevrolet Sedan Delivery |
| 1969-1971 | Chevrolet Townsman |
| 1957-1958 | Chevrolet Truck |
| 1957 | Chevrolet Two-Ten Series |
| 1958 | Chevrolet Yeoman |
| Attributes | |
| Alignment Tool Included | Yes, Yes |
| Clutch Disc Quantity | 1 |
| Clutch Usage | Drag Racing, Performance |
| Counter Weight Kit if Required | 560222 (sold separately) |
| Counterweight Assist | Yes |
| Country of Origin (Primary) | US |
| Crankshaft to Flywheel Bolt Quantity | 6-bolt |
| Disc Diameter | 11In. |
| Disc Diameter (in.) | 11.000 |
| Disc Material | Sintered Iron, Sintered Iron |
| Disc Style | Full face, Solid Hub |
| Emission Code | Legal US |
| Engine | 1955-85 SBC 2pc Seal |
| Engine Balance | Internal Balance, Internal |
| Flywheel Included | Yes, Yes |
| Flywheel Material | Aluminum, Billet aluminum |
| Hardware Included | Yes |
| Harmonized Tariff Code (Schedule B) | 8708935000 |
| Hazardous Material Code | N |
| Hub Style | Solid, Solid |
| Input Shaft Diameter (in.) | 1.188 |
| Input Spline Quantity | 18 |
| Life Cycle Status Code | Available to Order |
| Make | Chevrolet, Chevrolet |
| NAFTA Preference Criterion Code | B |
| Note | Also fits 1991-2022 crate BBC 1pc Seal large crank flange. |
| Note 2 | Aftermarket Transmission |
| Number of Discs | Single |
| Pilot Bushing Included | No, No |
| Pilot Bushing Material | N/A |
| Pressure Plate Style | Long |
| Quantity | Sold as a kit. |
| Racing Application | Drag Racing |
| Rear Main Seal Style | 2-piece |
| Ring Gear | 168 tooth |
| Ring Gear Tooth Quantity | 168-tooth |
| SDR Required Flag | N |
| SDS Sheet Number | N/A |
| Spline | 1 3/16In. x 18 |
| Throwout Bearing Included | No, No |
| Throwout Bearing Style | Standard |
| Warranty Time | 90 |
| GTIN | 00887753673978 |