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What has a C4 transmission?
The Ford C4 is also called the Dual-Range Cruise-O-Matic, FMX transmission and it was produced around 1964 and was used until 1981. Specifically, the vehicles that came with a C4 transmission were the Ford Bronco between 1973 to 1977, and the Ford F-series between 1965 to 1981.
How does a C4 transmission shift?
The C4 automatic transmission was introduced by Ford in 1964. It is equipped with a vacuum modulator that senses change in the engine’s vacuum due to throttle position and load changes. As these changes occur, the modulator adjusts the shift timing of the transmission according to the demand of the engine.
How do I identify a C4 transmission?
The easiest way is to check the transmission identification tag, which is located under one of the servo bolts on the passenger-side servo. On some transmissions the tag may be located under one of the driver-side servo bolts. There should be a series of numbers and letters which tell what year it is.
Is it hard to rebuild a C4 transmission?
Ford’s C4 Cruise-O-Matic transmission is the most reliable automatic Ford has ever produced. It is simple by design. In fact, it is so simple you can tear it down and rebuild it in your home garage using the Ford Shop Manual because no special tools are required.
How much HP can a stock C4 handle?
I’d say at least 400 ponys as long as it is in good shape. The question is more about “How long will it last” to me. There are guys running C4’s behind built 351C’s at the strip but they are highly modified. A stocker IMHO will take a 400 HP street blast every once in a while without grenading.
Is a Cruise-O-Matic a C4?
Cruise-O-Matic was just the type of Automatic Transmission that the C4 was called. Long Before the C4, There was the FORD-O-MATIC Auto transmission… I think that there were even C6 Trannies called Cruise-O-Matic as well.. The early ’64 thru ’66 Trannies were called “green dot” trannies.
How much horsepower can a C4 transmission handle?
A built C4 for the street will hold 500HP, and a race C4 will hold over 700HP, but unfortunately the stock C4 behind a 450HP motor isn’t going to last long, do yourself a favor and rebuild the one you have.
Is a Cruise O Matic a C4?
Are all C4 transmissions the same?
A redesigned C4 valve body and transmission case came along in 1970, which was used for the C4’s production life through 1981. In Drive, the C4 shifts the same as the Dual-Range at the large green dot with a normal 1-2-3 upshift program and the same gear ratios throughout.
What year C4 transmission do I have?
Changes to the C4 by Year
| Years | Transmission Code | Valve Body |
|---|---|---|
| 1965-1966 C4 Transmission | 6 | C4 or C5 casting number |
| 1967-1969 C4 Transmission | W | C7 Casting Number |
| 1970 C4 Transmission | W | D0-D7 Casting Number |
| 1971-1980 C4 Transmission | W | D0-D7 Casting Number |
How much does it cost to rebuild a C4?
They range from $800 to $1,300. The bulk of them are in the $850 to $950 range. Not sure how the C6 and C4 compare, but I would think the work and parts should be about the same.
What’s better C4 or C6 transmission?
The C4 transmission was primarily used in cars. The C6 transmission could handle more power. Due to the ability to handle more power, the C6 transmission was used in many Ford trucks with bigger engines, and in larger cars that were manufactured with bigger engines.
What can I do about the C4 transmission?
One of the most popular modifications is to outfit the C4 transmission with an aftermarket torque converter. One major advantage of an aftermarket torque converter is the ability to set your own stall speed.
Why is the C4 transmission called the Green Dot?
At the time, the C4 was referred to as the dual-range Cruise-O-Matic, but many enthusiasts refer to it as the green dot transmission. This nickname stems from the two dots on the gear selector.
What kind of engine does a C6 transmission fit?
There’s also the small-block C6 originally intended for 351W and 351C engines, which fits any six-bolt 289/302/351W/351C small-block bell-housing bolt pattern. Finally, there was a C6 for Diesel engines beginning in the 1980s, before the E4OD (4R100) was introduced in 1989, punctuating this transmission’s reputation for durability.
What kind of flex plates are in a C4 transmission?
As the C4 evolved, other design changes were introduced. There were C4 transmissions with pan-fill dipstick tubes (blended case and bell-housing with 164-tooth flex-plates). Most C4s were case-fill (notched case and bell-housing with 157-, or 148-tooth flex-plates).