I just bought a 1942 1.5 ton flat bed and I was trying to turn the motor over but the bottem end is siezed, Before I try anything farther I wanted to know if there is any tricks I should try I have pulled the plugs and put about 2 tbs of diesel in and let that set for a week with no hope and I have tapped the valves and they all move and the rocker arms move free to. I have tried to find the numbers on the block but I can't find them.