I guess I just took the easy way. I knew it was going to need a rebuild so I dropped the pan and proceeded to take the whole engine apart. With head, crank and cam removed the pistons came right out. GMC 248 but how much different is it? I guess I have never run into a piston seized to the bore yet.


1947.2 GMC 1/2T SWB panel
1947.2 GMC 1/2T long bed
1948 GMC 1/2T short bed