318 gurus/historians

Like mentioned above, the numbers. I wonder if there is "T" stamped below left head too. I have seen it on B, RB blocks but those were from Trenton Engine. 318's were from Mound Road Engine. All were blue that year, at least in the Truck Plant. There may have been a different color on the Mitsubishi diesel in 1978, but everything I saw for years in the 1970's was blue. If your engine came out of passenger car, oil pan was likely swapped because trucks had a rear sump pan. Also, distributor tag number is a clue, but only that, a hint or clue.