420 will bolt up to GM bell housing. Retainer dia. Should be 4.875”, so make sure bell housing is not 5.125”, otherwise need spacer from AA.
Ed
Hi Ed,
This one is bolted to a '53 235, I'm just not sure what the rear end is yet. Any idea why it won't go into reverse? It has the safety lever on it that you have to pull up to move it all the way to the left but once there it won't go back into reverse. I had it in there once while it was parked and not running but I can't seem to get it there now. It goes into all 4 forward gears just fine.
Also, if it's out of a '53, based on the engine casting number, shouldn't it be a closed drive system? This is why I'm not sure what the rest of the drive line is.
Joe
