Using 4 blade SSM III or IV props on a SSM II
 

Here is my situation. My boat has SSM II drives on it now. The props are 15x23 3 blade cleavers. Labor day weekend I bent the ear of one of the props and Johnnys prop shop in Detroit says they cant fix it, it is too thin. From what I have been reading my props are a 19 spline small shaft similar to the shaft in a SSM III. Will 3 or 4 blade props off a SSM III fit on my drives? I believe they are both 19 spline and 1 3/8 dia shafts

The SSM 2 3 4 all take the 19 spine prop except for the 3a 4a those take the the bigger spline like the #5
BBlades sell an adapter that lets you use the #5 28 spline props on the #2,3,4 19 spline drives Hope this helps

fixx
 

dont know if thease will clear the cavatation plate but their 4 blades
http://www.ebay.com/itm/Rolla-4-blad...#ht_500wt_1204