Took a few photos of my 1950 Fleetwin crank compared to what I am 99% sure is my 1953 Fleetwin crank.
Dimensionally they are identical and both spin freely in the front cover of the 1953 fleetwin block.
The 1950 crank has large weights attached to the counter balance sections. The 1953 has no such weights.
The 1950 also has the point cam ground into the crank where the 1953 has a separate point cam.
Both cranks have the splined drive shaft bottoms.
So, for sure it’s not a 1950 crank and since the splined drive shaft is required, I’m thinking more and more that it is a 1953 crank.
When did OMC go to a separate cam on the Fleetwin?
