Re: Can 1955 mark 25 lower drive unit fit 1956 mark 25

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March 9, 2016 at 10:46 am #33151
Leon
Participant

    I would run 24:1 on that.

    Would the innards work from one, to the other? That may be a good time to re-seal the lower and check all the gears out, anyway. Plus you won’t have to do any mods to the lower unit housing. You do have lower the lower to yours, correct?