lower unit swap 1978 merc 70hp 3cyl with 1984 mariner 75hp 4cyl..

[appleo]

is it my lucky day that these lower units are interchsngeable?

any mercury experts out there?

 

[Laddies]

Re: lower unit swap 1978 merc 70hp 3cyl with 1984 mariner 75hp 4cyl..

No.