Is this numbers matching?
-Shark Man
The Best of Corvette for Corvette Enthusiasts
If the engine had been replaced in the heavy repair section at St. Louis before the car was shipped, the VIN derivative would have been stamped on the replacement engine by assembly plant personnel. That would meet the definition of "matching numbers" since the car left St. Louis with a block replaced at the factory and with the correct VIN.
If the CE is installed in the first few months, it may have the same casting number for the block as the original and the date code may precede the build of the car. In which case, you could judge the car in NCRS and only have the hit for no VIN and no assembly code.
If the install was a year or two later, the CN may or may not be right and the date code is most likely AFTER the build of the car. In NCRS judging, you'd take the full hit on the engine.
With today's narrow-minded market, only ORIGINAL engine is worth any money and NUMBERS MATCHING is only worth money to those who have no idea what NM means.
The CE is no way original, so it is NOM. End of discussion on that point.
Now is the CE any good? I would buy one in a second, if the rest of the car was good, as a driver or a personal car. Search Yahoo for CE blocks. I agree with that web page that comes up that this is the only case where Chevy reenters the life of one of its cars after it has left the factory. I think it makes them special. However, no one pays for that specialness.
I would not buy one as an investment or for judging.
Thank you. If people insist on using this silly term, then use it and live with what you get. If I put a crate engine in my vette and stamp my vin on the crate engine, then as far as I am concerned it is a "numbers matching" engine. If the factory messed up and mixed up 2 engines on the assembly line, and my engine stamp differs from my vin by one number (This has happened), then I do not have a numbers matching car and in fact the factory produced a non-numbers matching car.
NOM stands for, Non, Original, Motor. A CE block is a non-original motor. You can't really call it an original engine, can you? Don't confuse the meangingless term "matching numbers" with "original." I know what original means, that's how the car left the factory. Dealer add-ons are not original. They might be cool, and they might be as old as the car, but they are not..., let's call it factory original.
If you are having a car judged by NCRS it can do very well with a CE block, even if it is NOM.

















Personally I dont give a damn especially if it`s a UPGRADE engine. A 'Lotta HP'.
Just dont try to pass it off as something it isn`t.