I'm 99.9% certain the THM-350 output shaft spline counts remain the same for the 70's and 80's, 2WD OR 4WD.
You can replace an 80's 700R-4 with a 70's THM-350 in a 4X4 application and keep the driveshaft length the same by using a tranny with a short 2WD driveshaft, and cutting off part of the splined area, then mate it to the transfer case using an adapter that's about 1-2/2" or 2" thick. So the splines ARE the same. (You wind up with an output shaft that's a little longer than the factory part, but shorter than the shortest 2WD version.)
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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