FE Block Identification

[FFR428]

Originally Posted by pop66ltd

also Barry's link is not a drawing,it is an independent lab report to identify a particular section of what appearers to be an engine block it does not identify what block or if this block was even in production at that time,it is also from 1966,the 105 block was not produced until 1973 some 7 years later.

Pops, with all due respect I agree with Barry's claims. I believe the document in question is for the SK33135 blocks as noted. Pretty sure these were 427 blocks as if you note they were stress releived. Dave Shoe would be the one to correctly answer that since those are his scans. And a few other gentlemen at www.fordfe.com can answer your high nickle question the best. There was a recent discussion on the 72 "P" 427 blocks with some pretty interesting outcomes. SK parts are known as sketch parts and experimental parts. Could be Ford was playing with the foundry mix perhaps for NASCAR or other race programs involved at the time. So correct, that mix would not be for your normal production block. XE part numbers were preproduction parts to be slated for production. Once a production part it gets a C6XX or whatever decade and year is of said item. I doubt Barry's here to just make a sale. As yourself too I'd hope. He contributes to many forums I frequent on a regular basis with "non sales" information. So I think that was kind of a cheap shot. In a perfect world we'd have all the perfect answers. But alas it's not and here we are today. I do hope you take the time to speak with Dave Shoe, Dennis K, John V and a few others about the subject. If it's really of interest to you. Being your in the bizz I'd think it would and could only benefit knowledge. I've also read tensile strength of the 70's blocks may have been lowered. Perhaps the reason for the change to all HD castings. I'd exclude the 427 there. As there was still a race demand for good blocks. True or false?? I dunno. But the high nickle thing in std production blocks has been debated and debunked for years and can be proven to you if asked. It's a common misunderstanding some can see and understand.... and some cannot. It's a known fact the harder the block is to machine the more difficult it is and downtime there is. It was just not profitable for Ford to cast blocks and materials that were hard on equipment. Time is money.

PS...It's also been noted that some Model T blocks have a X mark on them.

All the best...G.