The Ford Barn

raceron1120 · 10-04-2023, 08:11 AM

I understand why owners are concerned about the true identity of their Yblocks. After decades of them being around, being rebuilt and modified, actually knowing the cid can be a challenge. I remember way back in another life (almost), I worked Ford Parts at a dealership in the metro Detroit area. A guy comes in, asking what engine is in his '55 F100. I went over to his shop and he had Yblock parts scattered from June to Christmas on the floor! From 239s to 312s, a true duke's mixture. After considerable debate and discussion, he/we concluded that except for the 239s, he could use any of them for his '55. He was building a driver & not a show piece so casting #s weren't an issue. Later when asked what engine he had, he simply said "one that fit". So I guess only he and his doctor knew for sure. Recently I gave away 3 mostly complete & rebuildable Yblocks, ID #s said 2 were 272s and one 292. And sent other one - yeah a true 312 - to the scrapyard.

10-04-2023, 08:11 AM	#10
raceron1120 Senior Member Join Date: May 2010 Location: Ellsworth Michigan Posts: 1,835	Re: Engine size I understand why owners are concerned about the true identity of their Yblocks. After decades of them being around, being rebuilt and modified, actually knowing the cid can be a challenge. I remember way back in another life (almost), I worked Ford Parts at a dealership in the metro Detroit area. A guy comes in, asking what engine is in his '55 F100. I went over to his shop and he had Yblock parts scattered from June to Christmas on the floor! From 239s to 312s, a true duke's mixture. After considerable debate and discussion, he/we concluded that except for the 239s, he could use any of them for his '55. He was building a driver & not a show piece so casting #s weren't an issue. Later when asked what engine he had, he simply said "one that fit". So I guess only he and his doctor knew for sure. Recently I gave away 3 mostly complete & rebuildable Yblocks, ID #s said 2 were 272s and one 292. And sent other one - yeah a true 312 - to the scrapyard.