When did the HD C4 shift pattern change?

When did the HD C4 shift pattern change?

This basic HD C4 was again redesigned in 1982 with a convertor clutch and a number of other different internals and named the C5. All three versions can be either case-fill or pan fill.Of course there are a couple bastard versions you may run across. The 1965-1966 “green dot” shift pattern versions are in a ton of Mustangs.

What should the clearance be on a C4 transmission?

Clearance in the packs should be .005″ for each lined plate in the pack. A 5 plate pack should have .025″ clearance. The easiest mod for the governor is to replace the secondary valve that is in it with Ford # C4OP-7C053-A. This will make it shift at full throttle at 5800 RPM.

How do you Ream a C4 transmission case?

Ream both sides of the front cooler passage from the fitting side and the pump side. Check the fittings to see that the holes through them are larger than the 3/16″ reamer. If it is not then ream them to 7/32″. Clean the case with compressed air to remove any chips.

What’s the best way to Hotrod a C4 transmission?

Ream the rear cooler line passage in the case to 3/16″ with a long reamer. Do this carefully because you don’t want to increase the depth of the passage just the diameter. Ream both sides of the front cooler passage from the fitting side and the pump side. Check the fittings to see that the holes through them are larger than the 3/16″ reamer.

Ream both sides of the front cooler passage from the fitting side and the pump side. Check the fittings to see that the holes through them are larger than the 3/16″ reamer. If it is not then ream them to 7/32″. Clean the case with compressed air to remove any chips.

Clearance in the packs should be .005″ for each lined plate in the pack. A 5 plate pack should have .025″ clearance. The easiest mod for the governor is to replace the secondary valve that is in it with Ford # C4OP-7C053-A. This will make it shift at full throttle at 5800 RPM.

Ream the rear cooler line passage in the case to 3/16″ with a long reamer. Do this carefully because you don’t want to increase the depth of the passage just the diameter. Ream both sides of the front cooler passage from the fitting side and the pump side. Check the fittings to see that the holes through them are larger than the 3/16″ reamer.

What should the half stick reading be on a Ford C4?

If not, add fluid in small amounts until the dipstick shows at least “half.” Then, start the engine. You want a half-stick reading because fluid expands as it warms. Operating temperature is 150 to 170 degrees F.