Joe,
I guess you can count me in with the group that believes that all of the 1968 427 cars were transplants; at least with the data available at this time.
I know that there have been several articles written about an "MV" code 427 in 1968. I have personally seen one of these "MV" blocks (and am still trying to purchase it
); it is most definitely a standard bore 396, casting number 3916323. The information stamped on the pad is for a 1968 Camaro with casting and assembly dates in early 1968. The owner of the block was told that the car was delivered to Yenko Chevrolet and subsequent data I have received from NCIB records confirm this. The final piece of evidence would be to find the car that this engine belongs to, but so far, I haven't been successful in locating it.
Regardless, I believe that what has been discovered to this point rules out the possibility of an "MV" code 427 (I don't see GM using the same broadcast codes for both a 396 and a 427 during the same model year). The more likely scenario is a special code assigned to the L-78s installed in COPO 9737 Camaros in 1968.
Regards,
Stan Falenski
[Edited by Rowdy Rat (02-20-2001 at 08:52 AM).]