| Manufacturer | Ford Motor Company |
|---|---|
| Production | 1964–1986 |
| Predecessor | Cruise-O-Matic |
| Successor | AOD |
| Class | 3-speed longitudinal automatic transmission |
| Related | Cruise-O-Matic |
The Ford C4 was a three-speed, medium-duty automatic transmission introduced in the 1964 model year and produced through 1986.
It featured an aluminum alloy three-piece case (bell housing, main case, and tailhousing). This was significantly lighter than earlier cast iron Cruise-O-Matic designs. It also used a Simpson planetary gearset.
It was used with Ford's inline six-cylinder engines and small V8 engines (see Ford Windsor engines), usually up to 302 in³ (5.0 L). By comparison, the 351 Windsor and 351 Cleveland small and intermediate-block engines were backed by the medium-duty FMX. A few C4s were built with a big-block bellhousing to use with Ford 335 engines, notably the 351M, but these are very rare.
The early model C4 (1964-1969) used a .788-inch 24-spline input shaft, which was upgraded in 1970 to 26-spline and .839-inch. The upgrade also included a matching clutch hub of 26-spline. In 1971, Ford went to a 26/24-spline input shaft, meaning the torque-converter side is 26-spline and the clutch hub is 24-spline.
It is especially notable as the original automatic transmission option in the Ford Mustang.
The C4 was also found with valve bodies requiring a different number of bolts, 8-bolt vs 9-bolt. A 9-bolt valvebody can be used on either case, but a nut & bolt must be used on the valve body in the empty hole, dropping the bolt in from the top and using the nut on the bottom/filter side.
Modified C4s remain popular with hot rodders and drag racers due to their simplicity and durability.
Year & Model breakdown:
- 1964–1966 Dual-Range, 24/24 spline, castings: C4, C5, C6
- 1967–1969 Select Shift, 24/24 spline, castings: C7, C8, C9
- 1970–1970 Select Shift, 26/26 spline, castings: D0
- 1971–1979 Select Shift, 26/24 spline, castings: D1, D2, D3, D4, D5, D6, D7, D8, D9
Applications:
- 1973–1977 Ford Bronco
- 1974–1982 Ford Cortina
- 1965–1983 Ford F-Series
- 1964–1970 Ford Fairlane
- 1978–1983 Ford Fairmont
- 1965–1970 Ford Falcon
- 1975–1982 Ford Granada
- 1975–1980 Ford LTD
- 1970–1977 Ford Maverick
- 1965–1981 Ford Mustang
- 1965–1979 Ford Ranchero
- 1968–1981 Ford Thunderbird
- 1968–1976 Ford Torino
- 1964–1981 Lincolns
- 1977–1980 Lincoln Versailles
- 1974–1980 Mercury Bobcat
- 1972–1981 Mercury Capri
- 1964–1977 Mercury Comet
- 1967–1981 Mercury Cougar
- 1975–1980 Mercury Monarch
- 1968–1976 Mercury Montego
- 1978–1981 Mercury Zephyr
C5
The C4 was replaced in 1982 by the C5, which was essentially an improved C4 with a lock-up clutch in the torque converter to improve highway fuel economy. It bore the casting numbers D2, D3, D4, D5, and D6, corresponding with the year it was produced. The C5 was phased out in 1986, replaced by the AOD. The production plant in Sharonville, Ohio was converted to production of the C6 transmission which was relocated from Livonia, Michigan, as the Livonia facility was converted to the AOD.
Applications:
- 1986 Ford Aerostar
- 1983–1986 Ford Ranger
- 1983–1985 Ford Bronco II
- 1983–1986 Ford LTD
- 1982–1986 Ford Thunderbird
- 1982–1986 Mercury Capri
- 1982–1986 Mercury Cougar
- 1983–1986 Mercury Marquis
- 1983 Mercury Zephyr
See also
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)
