I am looking at a 1954 Chevy 3100 5 window with a 4 speed hydramatic in it from the factory. I was not aware this was even an option but after reading the operators manual I see it was. The truck shifts smoothly and does not seam to have any trouble. My question is how rare is this and are there many out there? Are they reliable? I have seen hundreds of trucks and only gmc's with the hydramatic trans. Also is the chev and gmc trans the same?
