Most of the medium-duty trucks in the 1940s and early 50s had 235 cubic inch spray-oiler engines. The block casting number can confirm that- - - -it's located on the passenger's side front of the block above the oil pan rail, near the fuel pump. There is also a stamped number on a machined pad behind the distributor. Post both of those numbers and one of our part number crunchers will be able to tell you exactly what you have. If you happen to be looking at bare engine blocks, the 235s are 1/8" taller from the top of the block to the oil pan rail than the 216s- - - -to account for the slightly longer stroke crankshaft in the 235.

A frame reinforcing plate usually means you have a 2 ton chassis- - - - -does it also have a 2 speed vacuum shift rear axle?
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!