An 1986 CJ7 could possibly have a Dana 44 rear differential, they put them on some models of that year. If so it is one of the better CJ7. I had an 1984 with the T5 5-speed. It was a smooth transmission and shifted well but not known to be very strong. The best transmission that was put in a CJ7 was a Tremac 4-speed, it was much stronger than the 5-speed.
As good as the T18?
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