I am trying to ID the engine in my '46 Chevy Pickup. This was my Dads project before he passed and he was not the original owner. I think it was originally from Oklahoma.. I am going to paint the engine and when I started to clean things I finally uncovered some numbers on the block and head. I think the block is a '58, but I'm not sure. I don't know about the head. I have attached 3 photos. Any help would be good. Thanks in advance
1946 1/2 ton Chevy Pickup 1954 235 cu in 3 speed on the floor