According to this thread it's a 11":

https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=975674

So I will try to find a flywheel here. Only issue I have now is what splines is on end on The sm420. I have read that the 2-ton had 35-spline but can't find it now. I must remove first it seems.


My Chevy Viking 1959

Ulf Hedlund. Eskilstuna. Sweden
[email protected]
Also:
Ford Galaxie 4 dr 1959
Ford Custom 4 dr 1964
Ford Mustang GT 2005