Lower unit compatibility

[Blakerosenbaum]

I have a 70s evinrude 115hp starflite 135580-e. Wondering if a jet lower unit from a 70s starflite 125hp 125183-c be compatible? Thanks

 

[racerone]

---Up to 72 was electric shift with coarse spline.----73 to 76 was oil pressure assisted shift and different driveshaft spline..----later models were mechanical shift.---I would say it is a NO GO on this one.

 

[Blakerosenbaum]

---Up to 72 was electric shift with coarse spline.----73 to 76 was oil pressure assisted shift and different driveshaft spline..----later models were mechanical shift.---I would say it is a NO GO on this one.

Yeah mine is electric shift. I’m having him check what his is. Thanks!

 

[racerone]

The 1975 model parts on a 1971 ---WILL NOT FIT.----Driveshaft splines are different between 1971 and 1975 models !!