I think you are going to run into all sorts of performance problems.
My Bravo II has a 2.0 ratio on a 22 x 22 prop @ 4000 rpm = 2000 prop
turns. I think if you run a light crankshaft as is in the automotive
engine you will;

A. Never get the prop turns right.
B. Burn out the main bearings due to overload.
C. Have an engine and trans that overheats all the time.
D. Waste a car load of money on the shaft engineering.
E. Probably blow yourself and any passengers to kingdom come, because
auto parts do not meet USCG marine safety requirements.

Please! for your own safety, become conversant with United States Coast
Guard Marine Safety requirements and SAE standards for: Starters,
Carburetors, Flame Arrestors, Alternators, Fuel Pumps and Ignition Systems.





http://www.uscg.org

http://www.uscgaux.org/~0701408/

Capt. Frank

wrote:

Just got a 21' 73 sportcraft boat. Have a recked an 80 camaro w/ a good
267 (v8) and tranny. The boat is pretty rough and has a 165hp
mercruiser. I'm wondering for the pain in the ass of getting it
running with water under it and so-on maybe I could just put the prop
onto the drive-shaft of the 267 and figure a mount. the only issues I
can think of are the seal arround the shaft, and the ratio. Anyone know
a mercruiser's ratio? How bout the ratio of a 267 V8 to the drive-shaf
for the 80 camaro? I figure the tranny would be really cool for
choosing fast or pulling a skier.
Thanks,
Elliott