Thanks ; Very helpful info. The first letter is definately a V. The second a P, so it looks like a trans. out of 1952 ,4000 or6000 series. Before I took the engine out for rebuild I drove the truck and it shifted fairly good and smooth. Made kind of a growling noise when I let off on the gas. Everything else seemed good. I am wondering if I should take it out now and have it rebuilt. I am taking apart the body peice by peice right down to the frame so it would be easy to take it out. Does anyone know aproximately how much it would cost for the rebuild, parts and labor. Thanks again for all the good advice.