The 1950 Sub that I just bought has a replacement engine that I washed up today, and I noticed oil lines coming from the front of the eng block, splits into 2 with 1 going to the oil filter (which is attached to the side cover bolts), and the other line returning to the rear of the block and in. There is a tee with a smaller ID tube going to the oil gauge ( 0-30-60 ) I thought the sixes were babbit pounders until late 53 (Auto tran) and all of 54. I have no idea with the GMC line. The lines are made from copper tubing. This engine number is A228460110 it has a crankcase vent tube with oil fill cap AND a valve cover with an oil fill spout/tube/ Thanks.
