October 12, 201510 yr I'm wondering what the spline count is on the front differential stub shafts of an XT6 transmission. Will EA81 axles slide right on, or do I need to swap out the stub shafts for EA81 parts?
October 12, 201510 yr They (XT6) are the same as the EA82 Turbo or 25 splines. I have swapped in standard EA82 23 spline stubs from a dead "push-button" 5 speed donor. It has worked well for 7 years so far in my EJ swapped '83 GL.Wagon.
October 12, 201510 yr +1 same as EA82T highly unlikely, you're probably talking about a manual trans, but if it's an automatic the stub shafts just pop right out, only held in place with a circlip, and they can be swapped easily.
October 12, 201510 yr +1 same as EA82T highly unlikely, you're probably talking about a manual trans, but if it's an automatic the stub shafts just pop right out, only held in place with a circlip, and they can be swapped easily. BUT, there are no direct 23-spline options for the 4EAT. The only way to get a Subaru auto with 23-splines is the 3AT, which use the same stubs as the MT. The only difference between them is the groove for the circlip/snapring....so a skilled lathe operator could modify a pair of 23-spline MT stubs to work in place of the 4EAT stubs (I have a pair of stubs modified in just such a manner on my workbench).
October 13, 201510 yr Author Ok, good to know. Besides the 3.900 final drive on the XT6, is there any substantive differences in gearing between a FT4WD 5MT XT6 transmission and an FT4WD RX 5MT?
October 13, 201510 yr Yea. They're the same as a PT4WD EA82 trans. Same 1st gear, other 4 are all a bit taller. It will yield lower cruising rpms in 5th than the 3.7 RX trans.
October 13, 201510 yr Author I can't seem to find the old gear ratio chart for the old school chassis. Anyone still got the link?
October 14, 201510 yr Author Hmmm, that doesn't seem to show the EA82 S/R 5 speed trans, or the XT6 trans either...
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