68 Matching Transmission Question
Thread Starter
Instructor
Joined: May 2012
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68 Matching Transmission Question
Hi folks. Just bought our first Vette, a 1968 with numbers matching 327/350hp. I have a question about the partial VIN stamp on the Muncie 4 speed. The VIN on the transmission matches the engine and vehicle VIN minus the last 2 digits (see photos below). Engine – 18S400924, Trans – 18S4009. Is this a “normal” matching number for an early 1968 with assembly date of 9-29-1967? Actually, there appears to be a very faint image of the bottom part of a 2 following the 9. Is it possible that the stamping machine was not flat and didn’t correctly imprint the last 2 digits?
Engine:
Transmission:
Just had to throw in a pic of the car too:
Engine:
Transmission:
Just had to throw in a pic of the car too:
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Is the [cast] surface where the "24" should be a little lower than for the rest of that S/N? The other numbers look like they are the same as the gang stamp numbers. So, if that cast area is lower, the stamps may not have touched the casting surface and left no impression (or, rather, only a little bit of the "2"). If there is a casting date code on the tranny main housing, and it's reasonably close to the production date of the car, I'd surmise the tranny to be original to the car....just got a bad stamp job.
Race Director
Joined: Jul 2001
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Great looking car- congrats
Thread Starter
Instructor
Joined: May 2012
Posts: 115
Likes: 4
Is the [cast] surface where the "24" should be a little lower than for the rest of that S/N? The other numbers look like they are the same as the gang stamp numbers. So, if that cast area is lower, the stamps may not have touched the casting surface and left no impression (or, rather, only a little bit of the "2"). If there is a casting date code on the tranny main housing, and it's reasonably close to the production date of the car, I'd surmise the tranny to be original to the car....just got a bad stamp job.
Thread Starter
Instructor
Joined: May 2012
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Thread Starter
Instructor
Joined: May 2012
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Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Some folks might actually try to re-stamp the "24" in place. But, I think leaving it alone would not only be "correct"...as it was actually done by the factory...,but would give the NCRS judges something to argue about if you get it judged. 
Thread Starter
Instructor
Joined: May 2012
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After all, an authentic, mis-stamped coin is worth a lot more than a perfect one. Shouldn’t the same apply to an authentic mis-stamped Corvette tranny?
Melting Slicks
Joined: Jun 2009
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From: Anderson SC
It clearly presents as correct - just mis-struck.
That red on red vert wouldn't have AC by any chance?
-W
Race Director
Joined: Jul 2001
Posts: 15,892
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Just another example of spreading bad info is what I see.
