With the C4 you can build a serious heavy duty transmission in a small package. New stamped-steel pans are available from Scott Drake Reproductions dealers. They also offer the quickest release time, which is important to crisp performance. Beginning in 1970, Ford changed both the case and valve body to an eightbolt pattern making them incompatible with 1964—1969 units. Step-5: Install Parking Pawl The installed parking pawl, return spring, and gear. Written by George Reid and Republished with Permission of CarTech Inc. If you want to start out in second gear with the Dual-Range C4, you place the shifter at the small dot off detent, next to neutral where the transmission starts out in second gear and upshifts into final drive.
For further information and pictures describing these differences please check out the page created by Paul Pearson on Mustang Central on the following link. There is no gear activity in direct or final drive for a 1. I went with the lowest option which is the towing option. Do it on the cheap, and you have to go back inside sooner. C4 band adjustments are coarse-thread and C5s are fine-thread. Unless you have a 1962—1964 221-, 260-, or 289-ci engine with a five-bolt block, you need the improved six-bolt C4 bellhousing. If all else fails, one of the best sources is Transtar for new parts.
With a extra set of hands I dropped the transmission. The roller clutch not pictured allows low-reverse drum rotation one way, but not the other Step-4: Install Inner Race Documentation Required The inner race fits in the center of the roller clutch. There are no gaskets or seals here, just a snug interference fit. Bolt Pattern Another item to watch for is five- versus six-bolt bellhousing-toengine- block bolt patterns with C4 transmissions. Cold transmission fluid gives you an erroneous pressure reading on the high side because the fluid is more dense. The owner of this site is a Ford Mechanic and offers dvds on how-to projects including the C4.
From 1964 to 1969, the C4 had a. Note how the spring retainer, roller, and spring go together—with only one set installed here. Each chapter contains special notes, sidebars, and technical tips to assist the reader at every step in the process. Good thing I had lots of cat litter on hand. The smaller five-bolt bell left is for five-bolt small-block V-8s prior to August 1964.
After picking up the dvds and preparing for the big project I picked up a few other things. Another issue to watch out for is five- versus six-bolt bellhousings. On the street, you want longevity. Pack pump cavities with transmission assembly lube for generous lubrication on startup. Torque converters were also particular to the different flexplates. To increase control pressure, throttle valve adjustment needs to be clockwise. Valve body identification can get tricky, but not if you know what to look for.
You may also go with the 1982—1986 C5 stepped-bell, casefill main case and C4 bellhousing to achieve the most reliable C4 possible. Later, in the 1970s, Ford went to one large return spring to reduce costs and improve clutch performance. Install it smoothly until seal is submerged. It is those details missed that come back to haunt later. With this turn of events, power flows through the forward clutch to the front planetary-ring gear hub, which is tied to the output shaft.
Like a ratchet in your toolbox, the one-way clutch allows rotation only one way. In 1970, Ford went to a larger. What is the Bluefire Reader App? It is the most common intermediate servo you can find. Remember, the throttle valve is important to transmission control pressure, which means being careful with how you make adjustments. If you want fluid to run cooler, go with a cast finned aluminum pan.
Does the throttle valve work properly? The best pieces are factory C4 components that came along after 1970. Be sure you have inspected drive and driven gears along with the case, checking for abnormal wear patterns. One mistake I see made time and time again is not replacing all bushings. The sun gear is driven by the input shell, which drives the reverse planet gears. It's a favorite from rock racers to daily drivers.
The C5 differs with improved hydraulic circuitry and more generous oil flow. For improved performance, you want either the H or R servo and piston designed for full-sized Fords, or the C servo for 289 High-Performance V-8s. Case-Fill or Pan-Fill Although there were a variety of C4 castings produced between 1964 and 1981, there are but two basic types you can expect to find: stepped and blended-bell cases with a wide variety of tailshaft housings and bellhousings. At 3 inches of vacuum, expect to see 138 to 148 pounds of line pressure in any forward gear. The cause of transmission failure can be an important detail missed during assembly. Note primary right and secondary left valves.