Quote:
Originally Posted by willowbilly3
True but also Ford ran batches of intakes, heads ect You could very easi;y have parts with date codes 2-3 months older than the build date of the car I did read that whole article, very interest but nothing really on numbers matching
Maybe you could clue me in on what numbers are supposed to match
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You mean before vehicle assembly date, correct?
You will also have an engine (or any other component) assembly date. Much will depend on the actual vehicle assembly plant.
Let me go a little farther and hope it doesn't add to the confusion.
ENGINEERING PART NUMBERS- There is actually more than one. What you see stamped/cast onto the part identifies the base part. There is another PN assigned for differing machining protocol and/or assembly and yet another if the part is included in an assembly, say intake manifold with all attaching parts ready for complete engine assembly.
One example is the ECZ-B 4V intake that has a vacuum provision on the front runner.
As for GM numbers matching, I would a$$-u-me that they are much like FORD, casting/stamping ID NOS and these would be converted to actual Service PN's. If you mean VIN ID on the actual part(s), all manufacturers were required to ID major components beginning in 1968.
The greatest example(s) of non number matching cars to me is the Resto-Mods you see in auction houses not being what they claim to be and bringing in big bucks. It is like flipping houses with poor quality workmanship and materials. The owner will not be aware of it until years afterwards.
I don't know how to explain it more exactly than what I have. Sorry...
Quote:
Originally Posted by Motorhead6
Purist collectors WILL INDEED demand correct date codes and casting numbers on certain rare Fords. Also, there are certain numbers stamped into high performance blocks, for example, that identify them as such. A friend showed me this recently on a Super Cobra Jet block which allowed the potential buyer to identify it as "the one" he had when new. I agree that some GM models can have matching serial numbers such as the same as the VIN on some components, but I think most do not; I'm sure someone will correct me if I'm wrong. I think I'm right that not very many GM models can claim this other than that, like Ford and MoPar, certain components can be identified to correct models but not a specific car or truck.
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THANX!
I need all the help I can get...
Also note that Service Replacement Parts will not normally be the same a assembly parts. This really shows on HP engine assemblies.