Reply To: 10 hp QD differences

[Don]

Anonymous wrote:

Here is something you may not know, the 1956 and older models 18 &10 hp lower gear cases used a shorter drive shaft bushing than the 1957 18&10 hp cases and the 1958 and up 18hp cases. That gave more support for the driveshaft and spread out the load forces and gave longer wear life for the bushing.

So right, did not know that….But, am guessing that there is no difference in the driveshafts or other parts, and that the newer gear housings would be a direct replacement (older 55-56 part numbers would supercede to newer gear housings) for earlier housings.