[quote author=twoclassics link=board=1;threadid=2010;start=0#msg13343 date=1123614070]
Where would you look to find the VIN number on a 390 x code engine to assure the car is numbers matching as advertised
[/quote]
The following casting #'s were used for 1968 - 390 Before 2-1-68 -- C8AE-6015-A
From 2-1-68 -- C8AE-6015-A or C
You need to be careful trying to identify a block by casting # alone since many engine families used the same casing #'s. As stated earlier it would be located on back rear of the block just above the bell housing area if it was stamped. I've talked to Signature Auto Classics here in Columbus (Rick Parker) and he told me not all VIN's were stamped into the blocks of the San Jose cars. He also mentioned you may find the VIN stamped into the block edge just under the intake manifold.
To give you a good example, my 68 GT 390 Coupe (San Jose) is not stamped but, my 68 GT/CS 390 is. My CS block also has a casting # of C8ME which supposidly is a 428 CJ block for 1968. He also stated you could even have a Casting # for 1967 (C6ME-6015-A or C6AE-6015-E or C7ME-6015-A) depending on your build date. What is even stranger yet, a friend of mine has a 68 GT 390 Coupe and when we rebuilt his block we were unable to find a casting # of any kind. His car was produced in New Jersey. To accurately identify his block we measured the bore size. Also realize many folks use the Casting #'s to say a car is numbers matching. For example many of the "C" code cars once torn down will have a "302" stamped in the oil galley of the engine. Rumor has it that Ford ran out of 289 blocks and started using 302 blocks with 289 2V heads. That has been discussed on this site before. The main thing is don't be discouraged if you are unable to find the VIN stamped into the block. If you have a casting # and your build date is within a few months of the date code on your block - odds are it's your original block that came with the car. Below is a link which will explain some of the unique features associated with the FE engine.
http://www.mustangandfords.com/techarticles/15999/
Sorry for the long post. Hope this helps.
Don
