Most Ford half ton truck 9-inch rears from 1973-1985 had 31-spline axles. Ultraranger wrote:Most Ford half ton pickup 9-inch rears through 1972 had 28-spline axles. If the rear end tag reads '3L50', then it has either a Limited-Slip or Traction-Lok differential (again, it depends on the year model which differential type it would be). 50', for example, indicates an open differential. If the tag is still attached to the rear end's 3rd member, a '3. An 'H' in the '73-'85 models denotes 31-splines. If the axle code has an alpha-numeric, A2 or H4, for example, then the differential is a Limited-Slip or Traction-Lok (depending on what year model the vehicle is).īest I can remember, '67-'72 Ford trucks with an 'A' in the axle code denotes 28-splines. If there are (2) digits, 08, 09 or 17, for example, then the rear end has an open (single track) differential. If previous owners haven't changed out 3rd members/rear end assemblies and haven't swapped out the drivers side door, a quick way to determine if the donor truck has a locking differential is to look on the drivers side door tag under the "Axle" code. 28-spline are harder to find than 31-spline but you may get lucky if you are trying to locate a wrecking yard donor. Limited-Slip/Traction-Lok differentials can be hard to locate in the wrecking yards. The truck 9-inch housing widths changed over the years but any Ford 9-inch 3rd member will fit any 9-inch rear end housing (truck or car), so long as the axle spline count of the differential matches the spline count of the axles. Most Ford half ton pickup 9-inch rears through 1972 had 28-spline axles. From 1969 (1969-1985), the much improved differential was known as the Traction-Lok. Through 1968, it would have been the Limited-Slip differential. There were (2) optional Ford differentials produced in the bump side half ton pickups that directed power to both rear axles. Installation is a breeze but I'd have a professional set the gears. I went with the PowerTrax No Slip in mine for about $500. I got this info from a search on so I'm not 100% sure.ĮATON TT912A580 Differential True Trac 28 splineĮATON TT913A586 Differential True Trac 31 spline Rebuild kits for these are available for a modest cost. Be advised, depending on the year, they may have 31 spline axles instead of the 28 spline in our trucks. Not all will have the limited slip so find one with the ID tag to be sure. Locate the ID tag on the differential and looks for the letter L. These models/years were know to contain the Eaton limited slip differential. From Georgia! Your cheapest route would be at a salvage yard.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |