tclederman On that 1951 235 , Chevrolet never put a powerglide on the 41 to53(???) 235 did they ?? Wouldn't have been enough gear box for the trucks those came in.I think you could use the 235 babbitt engine ,if it has the mount plate you can drill,otherwise gotta tear it all down (not easy). Mine in a 48 big truck is not very powerful. Don,t know if that powerglide would be a bolt-up,either. Correct as needed.