Difference In Gearcases

waterman556

Cadet
Joined
Sep 22, 2008
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13
What is the difference in a 1974 70 hp Evinrude gearcase and a 1978 75 hp gearcase . Will you have a change in hp or rpms if you put the 70 hp gearcase on the 75 hp Thanks for any help Randy
 
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