Thanks for the info! The holes in the pushrod galley are plugged with square-head threaded plugs, so I could not have forgotten to put the line back. (see attached) I have an 848 head, and the engine casting is dated 1956, but no serial number stampings. The oil line on the drivers side has a tee, but I assumed the tee line is for an oil pressure gage, but I never saw the truck this came out of. I am really perplexed on what I should do from here. I did not have a line going around the back like yours, so I can't under stand how the oil gets to the valve train! It's great to have a site like this and I really appreciate your help!
55 GMC 3100 2nd Series 71 GMC 1500 Super Custom 1956 Thriftmaster 1954 Blue Flame 1962 Thriftmaster
