C5 intermediate band adjustment is fine-thread, while low-reverse is coarse-thread. At this point, power is flowing through the front planet carrier to the output shaft for a gear reduction of 1. Save time by slowing down and getting this right. Experts and racers generally believe the blended pan-fill C4 case is the strongest C4 case; however, it faces space limitations with subcompact, compact, and intermediate Fords. The ring gear then rotates around the front planet gears, which are tied to the front planet carrier, which is tied to the output shaft. Steels are driven by the clutch cylinder also called a clutch drum. This short tailshaft housing is for an application where it is supported from above instead of a crossmember underneath.
Step-6: Clean Clutch Frictions Always soak new clutch frictions in transmission fluid before installation. Note how the spring retainer, roller, and spring go together—with only one set installed here. Note: the reverse planet carrier and reverse-high clutch cylinder are already assembled. You get what you pay for. C4 band adjustments are coarse-thread and C5s are fine-thread. .
Note that is inch-pounds, not foot pounds. Hindrances to control pressure can cause slippage, heat, and wear. Flex Front Band - 2. . Because the C5 has a locking-clutch torque converter for improved efficiency, the converter is wider and, therefore, needs a wider six-bolt bellhousing. .
Clutch Pack Assembly Step-1: Begin Forward Clutch Assembly Forward clutch assembly begins with piston seals, which go on the clutch cylinder and clutch piston. Applying too much torque distorts the governor, rendering it useless. Intermediate Servo The C4 has been factory fitted with a variety of intermediateband servos for an even wider range of applications. However, fitment is tricky to impossible in compacts and intermediates, which leaves you with case-fill only. C5 - White Stripe - Push In.
You probably see more 157-tooths than anything because the C4 was installed in more compacts and intermediates than any other Ford transmission. In few places is this more true than clutches and bands. . Cold transmission fluid gives you an erroneous pressure reading on the high side because the fluid is more dense. To reduce line pressure, counterclockwise. One full rotation of the input shaft equals one full rotation of the output shaft.
Tailshaft length and housing are important considerations. Check fluid passages for debris. When power is applied, it flows to the forward ring gear, which drives the front planet carrier, which is splined to the output shaft. Best servos are H or R types for full-size Fords and trucks, which are the largest and provide the greatest apply area for better band hook up. Spline the forward clutch hub and ring gear into clutch frictions by gently working the ring gear back and forth until fully seated. When line pressure is too high, shifts become harsh.
Street and weekend-racing C4s can easily handle 250 to 600 hp without breaking a sweat. However, the eight-bolt valve body does not work with the nine-bolt 1970-on case. It is shown here with the low-reverse drum and hub. This gives you a 2. Locknuts to 35 to 45 ft-lbs.
The case-fill looks like this on the righthand side, with provision for a dipstick tube. Step-5: Remove Forward Clutch Segments Forward clutch segments are next, beginning with this steel. . From 1964 to 1969, the C4 had a. The case-fill seven-bolt bellhousing bolts directly to the front pump. When I ask transmission builders what they think of C4 versus C5 main cases, most take the C5 over the C4 when possible due to improved hydraulic circuitry and cooling.
So it's definitely something you want. Snap In Replacement Front Band. This ring gear drives the forward planet. It is easy to get the springs backward, which results in prompt transmission failure. Hard parts, such as planetaries, shafts, clutch drums, and the like, can be sourced from Transtar.
Pack pump cavities with transmission assembly lube for generous lubrication on startup. For 1970-on, there was yet another revised valve body eightbolt versus nine-bolt along with a corresponding change in the transmission case. In designing the C4, Ford used an aluminum alloy, three-piece case bell housing, main case, and tailhousing. Kevlar bands work quite well for allout drag racing but make no sense on the street. The main concern is cavity and gear condition, along with proper operation of the pressurerelief and drain-back valves.