1975 402 thunderbolt merc 40 hp

grizzreaper

Petty Officer 2nd Class
Joined
Oct 8, 2007
Messages
160
i was wondering if i could interchange my motors. i have a long shaft merc and a short shaft merc both the same year and hp. my transom is not quite 19 inches. i see that 15 to 17 inches is for short shaft and 19 plus is for a long shaft. could i get away with the short shaft or should i swap out bottom ends. if so how hard is it to swap out .
 
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