PLEASE HELP! 1979 Johnson 55HP lower unit compatibility

marty53

Petty Officer 2nd Class
Joined
Aug 10, 2006
Messages
121
I was wondering if the lower unit from an 80's 50HP johnson would bolt on to my 1979. Specifically, a 1988, 50HP 20" shaft 14 spline. The specs seem to match up but I am not sure whether this would fit. Any help is much appreciated.

Or, if anyone can list which lower units from different engines would be compatible with mine, that would be even better.

Please help!

Marty
 

marty53

Petty Officer 2nd Class
Joined
Aug 10, 2006
Messages
121
Re: PLEASE HELP! 1979 Johnson 55HP lower unit compatibility

Can I bump this? There is an auction ending on eBay and I was trying to get my boat running by next weekend for a family camping trip. Thank you for your help
 

papasage

Senior Chief Petty Officer
Joined
Jan 12, 2003
Messages
785
Re: PLEASE HELP! 1979 Johnson 55HP lower unit compatibility

i have a 1079 55 hp. can`t tel you if it will work . yo might try this site to . http://www.themarinedoctor.com/cgi-bin/YaBB.pl. you will probabley need the year of both motors to know for sure . if there isent that menny years different then it might be possable . i have change a eletric shift to a mmanul . the eletric was 1972 and the manul shift was 1973 or 74 .
 

dsinger

Chief Petty Officer
Joined
Aug 6, 2004
Messages
424
Re: PLEASE HELP! 1979 Johnson 55HP lower unit compatibility

Go to outboardexchange and to used parts check there. They will lump them all into years and HP, the ones that fit up anyway.
 
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