If it is a 2 ton, then that would correspond with the 261 in USA trucks.
I do know that the 261 was available in 3/4 and 1 tons in '61 and '62. I had a shop teacher that had a '61 3/4 ton that had one.
BTW, the 235 in my '55 was originally blue, and the #s are correct for the application, original engine to the truck.
