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  1. R

    Is it possible to replace a 5 speed with an old 4 speed? I have reasons.

    The R141 is a 4sp aluminum case transmission introduced in 1990 for pz/hz engines. Canada got these for their mine trucks 1990-1994. I have seen h41 4speeds (cast iron case) with 21 spline input for 3b engines but those would be several inches longer than a hz input. Late model h41’s could swap...
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