Trans E is E4OD, four speed automatic Overdrive. According to the owners manual on the 1990 F250 I bought for parts, 39 axle is a 6250 lb capacity Ford 10.25" 3.55 ratio open rear end. The parts truck has a C9 code axle for probably the same capacity, but limited slip. The tag on the axle says 3L55. If you need an owners manual, this one is going to be available.
Bill Vose (Old School Hot Rodder) 1986 F350 crew cab DRW 460ci EEC-V MAF/SEFI, E4OD, PMGR starter, 160 amp 3G alternator, 12X3 rear brakes, Traction lock 3.55
1995 Lincoln Continental (project car), 1994 Taurus LX (daily driver) http://www.oldschoolhotrodder.com
"growing old is inevitable, growing up is optional"
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