[Woodz428]

I'd thought about all that ,but haven't come up with any # that I feel is the partial vin.I haven't been able to find one on the back left where I've seen them before, did find one that has a different # than any casting date stuff stamped on the left front machined pad (small one on the left front corner below the head). I'll check the rear pad better, but it was my understanding that Ford didn't start stamping the blocks until '68,but felt that since the 428 wasn't a regular production engine probably had some type of stamping. The one I found reads (I believe) CA10(7)7 , I'm not sure that the first 7 is there or it's a space, I'm going to put some better light and some dye to see if I can get it to appear better or not appear at all. (hours later) I've deducted that those #'s are the production date of the engine 6 (not C)A10 and then a space and 7. Jan 10,1966, the 7 is a plant code. That doesn't seem right though,because the casting date (I was reading it upside down) is 6M5 or Dec.5,1966. With prussia blue and a magnifying glass it appears that there might be another # lightly stamped before the 6(which looks like possibly an S with the glass) and the A1077 ( the first 7 is barely visible but appears to have the same lines as the second 7) so it may be the VIN (SA1077?). When I break it down for cleanup,I'll check more thorougly, but those seem to be the only #'s that have any resemblance to a vin, they would be below the left front exhaust port. If that is a possible Shelby # that would probably be it.