Originally Posted by jr4x4
yea the number on that pad is C 95610. the letter C is like a inch before the number on the metal plaque beteeen cylinder 2 & 3. its pretty clear. i sanded all the paint off.
That format is wrong for a factory build date. They haven't had the engine size ("C") first since 1960. Is there any sign of another number?
Is it possible the original number was ground off and the rebuilder re-numbered it?
You may have to drop the pan to get the casting number off the crank. That part is likely the source of your problems.