Will 1975 vintage 115 HP heads fit on a 1981 vintage 115 HP Johnson 4 cyl

wired247

Lieutenant Commander
Joined
Oct 8, 2011
Messages
1,557
Will 1975 vintage 115 HP heads fit on a 1981 vintage 115 HP Johnson 4 cyl cross flow? Will they bolt up and work? I realize the compression would be higher but would it be too high? The coils would have to mount some other place but thats not a big deal. Is it do-able? I want to raise my compression some and I can get a good deal on the early heads but I don't know if they are 100% compatible.
 

Shane7

Petty Officer 3rd Class
Joined
Jan 4, 2012
Messages
81
Re: Will 1975 vintage 115 HP heads fit on a 1981 vintage 115 HP Johnson 4 cyl

Try it the worst that can happen is they won't fit
 
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