MCM vs. Alpha 1 outdrive swap

[m*a*baity]

Will an mcm and an Alpha 1 out drive interchange? All looks identical except for the shafts that go into the engine. One is shorter than the other. Anyone ever tried? Thanks

 

[TilliamWe]

Re: MCM vs. Alpha 1 outdrive swap

They will interchange. What you have, with the shorter shaft, is one drive that came off an inline 6 engine. It got a shorter shaft than the 4 cyls and the V8s.

Of course, switch the shaft and use the one you need for your application.

 

[Bondo]

Re: MCM vs. Alpha 1 outdrive swap

Will an mcm and an Alpha 1 out drive interchange?

Ayuh,... What are you calling an MCM,..??

The Mod.1s, R drives, MR drives,+ the Alpha 1 drives will all interchange....
The 8+" input shafts are for the GM based In-Line motors...
The V-motors,+ the later drives use the 9+" input shafts...
The Shorter input shafts went away with the Intro of the MR drives I believe...
Possibly the R drives...

Of course,... There's still the gear Ratio question......??...

 

[Don S]

Re: MCM vs. Alpha 1 outdrive swap

MCM stands for Mercruiser Marine (I/O's) as opposed to MIE that stands for Mercruiser Inboard Engines.

MCM does not stand for any particular type outdrive.