Alumacraft F7 long shaft?

I just bought an Alumacraft F7 from 1975. The transom is 16"+ to the bottom of the keel. Short shaft motors are 15" and long shaft motors are 20".

I found a great long shaft motor (1984 Evinrude 8hp with very little use for $500). Is there a problem running a long shaft on this boat? The caveat to a short shaft is possible cavitation. Besides drag from a long shaft, are there any caveats to running a long shaft?

Thoughts? I hope someone in the past has experience with both motors on this F7 hull.

Thanks,
Andy

you can buy or make a transom riser to make a long shaft work.

On a low horsepower motor like that you won't have any problems with a short or long shaft. Motor position is a variable even for powerful boats.

https://media.channelblade.com/boat_graphics/templatesites/dts/dealerlibraries/8441/copetipstricks.pdf

Welcome Aboard, Andy.

measure the transom with a carpenters square from the bottom
of the hull up to the top of the transom and see if the numbers are different.
the measurements should be taken perpendicular vs parallel.


Shaugh - that is really good reference material !! thanks for sharing.






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