Did they use more than 1 stamp on the same day ? They both look to be original , one is a 388 B 18 9 and the other is a 618 C 17 9 the 1 s are totaly different .

Sure. common sense would tell you they would not just build 1 DZ engine and let it go at that, probably had a run with the same identical dates.

They used the same assembly code stamp for the entire day, unless the stamp, or one of the dies broke. The stamp was assembled at the beginning of the first shift each day and used until the end of the last shift each day. At about 60 DZ blocks being built a day, chances of breaking the stamp was pretty small.

The second one (where you can see the lifter bore) is a restamp. the other is real.

OUTCH thats mine !!! was there only one location where they assembled engines ? The block was never decked I will see if i can get a better picture tomorow .

OUTCH thats mine !!! was there only one location where they assembled engines ? The block was never decked I will see if i can get a better picture tomorow .

All "DZ"-code engines were built at Flint V-8. :thumbsup:

James even though the block is a restamp, you still have a GREAT looking Camaro! Kevin :thumbsup: