Last night I was looking at my log book of sequential "SK" numbers used by Ford EEE engineers to create special race oriented parts. Lo and behold I find about 7 that reference 427 blocks and specific materials to be used to make them. The first three specify ACB iron to be used , and the next four list the elements and specific percentages to be used. Unfortunately I left the book at home so I can't immediately post the SK numbers AND dates "today" and the info will have to wait until I return on Monday Jan 3.
Several have referred to "mythical" high nickle blocks and it does appear that they WERE made. "I" know funny car racer Tommy Grove had them in '68 and they were the reason he continued to run the Cammer into '72 , even in the Barry Setzer VEGA funny car!!!!!