I may have stumbled onto something that deserves it's own thread. During the past week, I have been posting thoughts and info regarding the authenticity/originality of our 1960 Sunliner's 352/360 HP engine. A lot of good information was exchanged. Until this past week, everything that I have read concerning this rare engine has stated that there was no way of identifying the block as the HP engine. The casting number (C9AE6015D) merely identified it as a 352 engine. Thanks to information obtained on this board, I located additional identifiers stamped on the block where the oil dipstick is located. There are two markings on our car: "HP" and "3-0C22J." The "HP" designation clearly identifies the block as a 352/360. However, I could not figure out what the other marking indicated. This morning, as I was looking at the mountain of paperwork that I have collected, it hit me. That number matches exactly the numbers on the data plate. The date code of March 22, 1960 and the paint code "J." Is this possible? It cannot be a coincidence. I would love any and all feedback regarding this discovery. Needless to say, I am stoked! Has this been documented anywhere else? It would be very cool if has not...
