Gear case size performance

FillupD

Petty Officer 1st Class
Joined
Jul 5, 2007
Messages
261
I've been reading about lower units and some refer to the small gear case units as a speedy or racing unit.
I'm going to play with a couple of motors and was curious what experience was out there. What would be the difference between a 1977 55hp small gear case and a 1973 50hp large gear case motor be as in performance.
I would assume the large gear case with the larger prop would have more torque, top end speed? Fuel usage?
Anyone have an opinion or experience with this sort of thing?
 
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