Instead, it used a redesigned valve body offering a P-R-N-D-2-1 shift pattern known as Select-Shift. The one-piece casing with its integral bellhousing means each C6 is limited to the series of engines its bolt pattern will accept, and its sheer physical size and length means it is awkward to fit it in many cars. Both the C4 and C6 transmissions are still used in some instances. Count the number of bolts which hold the transmission's oil pan to the transmission. The 1964—1966 C4 was known as the Dual-Range Cruise-O-Matic due to its dual-range shift pattern, which included two driving ranges based on shifter position. The 1964—1969 C4 input shaft and clutch hub size was.
You can be methodical and cover all the bases during a rebuild and still things can go wrong. This video should answer most of these questions. Which Ford Auto Transmission Is Right For You? Determine whether the transmission's bell housing can be detached from the transfer case. These are nothing that cannot be fixed however. Operating temperature is 150 to 170 degrees F. Clutch pack capacity is increased and valve body is modified for improved shifts and lube transfer.
Unlike the C4 transmission, which features a bell housing that can be separated from the transfer case, the C6 is a one-piece unit, meaning that the bell housing cannot be removed from the transmission. This article does not any. By the 1970s, Ford had a respectable lineup of modern lightweight automatic transmissions. Cores can be purchased and rebuilt to suit the needs of a specific vehicle for much less than a comparably rebuilt modern overdrive automatic transmission with electronic controls. The C6 transmission is also used by those who enjoy going off road with their trucks.
Includes our Torque Max torque converter in stall speeds up to 2400 rpm. One of the major differences between the C4 transmission and the C6 transmission used by Ford was the amount of power that they could handle. For 1971—1981, the C4 valve body changed significantly and does not interchange with 1964—1969 bodies due to changes in the case. Expect to see all kinds of mismatched transmissions. The following are common symptoms and their likely causes. Another big difference in the Ford C4 and C6 transmissions are the years that each transmission was used in the manufacture of Ford vehicles. The B intermediate servo cover indicates mismatched parts because the B servo is for six-cylinder engines.
Because automatic transmissions encompass dozens of tiny parts—clips, balls, pins, valves, springs, and other items—your workspace must be well-lit, neat, orderly. The absence of control pressure to components happens for several reasons: pump not making pressure, torque converter cavitated, stuck pressure relief valves, manual shift valve not working, valve body malfunction, failed servo piston, or failed clutch piston seals to name a few possibilities. The 90-degree Fairlane small-block V-8s followed in 1962. Ford called its C4 the Cruise-O-Matic while Mercury called its C4 the Merc-O-Matic. When Ford Falcon and Mercury Comet were introduced for 1960, they were available with a new lightweight Ford-O-Matic 2-speed transmission. Counting the number of bolts is necessary, as the pan for the C4 transmission uses a total of only 11 bolts.
If the transmission was placed in third gear, the transmission would start in first gear, then shift to second and third gear as normal. This obviously depends on how much you want to spend and how you use your car. You can be methodical and cover all the bases during a rebuild and still things can go wrong. For Ford C4 and Ford C6 application. The C6 was produced with four basic bellhousing bolt patterns over its long production life and is a very rugged transmission designed for high-power applications. With the engine running, listen closely for abnormal noise such as torque converter improperly seated, which can cause squealing, no control pressure, and an inoperative transmission. As with just about any type of troubleshooting, begin with the simplest item first and work the problem from there.
The other gear ratios are: 2. The C4 ceased being used in Ford vehicles in 1986. From 1971 to 1982, the C4 had a split-spline count. If there is fluid on the dipstick, check the manual shift valve, which is where control pressure begins. If a seam exists between the bell housing and the center of the transmission, the transmission is not a C6.
Written by George Reid and Republished with Permission of CarTech Inc. The production plant in was converted to production of the which was relocated from , as the Livonia facility was converted to the. Versions of the C4 have also been produced for big-blocks. Transmissions that are overfull tend to foam or aerate causing air bubbles to be drawn into the torque converter and pump, which causes a great disruption in control pressure. The bell housing in located on the front of the transmission.
Bellhousing and main case were cast as one to reduce weight and reduce the likelihood of leakage. This gave it the capability to handle 475 ft-lb of torque. With a normally aspirated motor and maybe a mild cam, you should be looking at a 70 mph cruising speed of around 2,000-2,200 rpm. Although these transmissions were rugged and dependable, they were heavy, complex, and not easily adapted to performance applications. We also carry custom installation components to fit 1967-1970 Mustangs for easy installation and conversion to overdrive, ask your salesman for details.
We sell the total package, not something that will cost more in the long run or cost more after you buy everything you need one part at a time. It is a standard replacement mount that fits most Fords and is not uncommon, as metric fasteners have been used on domestic vehicles for over 25 years. Ford first introduced an automatic transmission in the Fifties discounting the Hydramatic offered in 1949-54 Lincoln Continentals , with the three-speed Ford-O-Matic, in service from 1951 to 1968. Think of a torque converter like a water wheel in an old saw mill: the waterwheel is driven by fluid in motion. The C4 transmission was smaller and not able to handle a heavy load.