Mercruiser Drive Coupler Question

ddrieck said:

Had a rod knocking in my 1985 Mercruiser 470
I bought another 470 and I suspect is a bit older
Serial number on the valve cover is gone so don't know the year
Question:
Will these drive couplers interchange and work with the outdrive shaft on my 1985 470
Coupler 1 is the same as my 1985 470
Coupler 2 is like the one on the engine I bought

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Bondo said:

Ayuh,...... The outdrive won't care, but the motor might with the set-back on the long, : short coupled,......
The crankshaft bolt pattern should also be the same,.

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Bondo said:

Ayuh,...... The outdrive won't care, but the motor might with the set-back on the long, : short coupled,......
The crankshaft bolt pattern should also be the same,....

Click to expand...