the "C" [2WD] and "K" [4x4] designations didn't begin until 1960 [see tech tip], younger folks seem to use them because they haven't seen the 3xxx designations much .... see the GM spec info here or any of the '46 manuals here .... your 3/4T is a 3600 model

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics