90 F-250 Tc
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Trans is probably the ZF and t-case is probably the BW-1356. Other t-case choice would be the BW-1345, used mostly in the F150 and Bronco. My '92 F350 4x4 with 351 & C6 has the BW-1356. Both are part time aluminum case and chain drive. Likely not as strong as an NP205, but strong enough that Ford put the 1356 in 3/4 tons and 1 tons at least up to '97.
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