Eng & trans VIN# stamping profiles on 68 GTX - correct?
#822012
10/04/10 11:20 PM
10/04/10 11:20 PM
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Joined: Aug 2010
Posts: 1,525 Eastern shore, New England
roadrunner69s
OP
pro stock
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OP
pro stock
Joined: Aug 2010
Posts: 1,525
Eastern shore, New England
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I did some research a few weeks ago on bogus VIN stampings on engines and transmissions. This week I'm looking at another 4 spd. where the stampings form waves rather than 1 fairly straight/ramped line. I've read where these were stamped in gang fashion so the numbers should generally track in one direction (up, down, or sideways, not 2 or 3 directional changes). In particular:
Engine VIN stamping forms a cosine wave with first 3 digits angling back downwards, the next 2 angled upwards, and the last 3 generally even or slightly curve upwards. Basically 2+ different levels represented. The fonts seem to be very similar to what's on the trans. The numbers are fairly evenly struck and easily visible.
Transmission stamping is much fainter than the engine stamping with the lower and left sides of all digits partially missing. The last 2 digits are hard to make out. The stamping here is more like a sine wave starting out low and sloping up for the first 3 digits, then sloping down for the next 2, then fairly level for the last 3. Again, probably 2+ different levels.
Would these two stampings have been done at the same time by the same person, and if so shouldn't they be similar in slope and depth rather than a mirror (inverse) image? Or can these type of irregularly curved stampings occur on the production line?
Car does have fender tag, build sheet, decent owner history but to me those are separate issues from the drivetrain. No sense in looking further at such a car if the stampings are potentially in question.
Thanks
RR69s
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Re: Eng & trans VIN# stamping profiles on 68 GTX - legit?
[Re: roadrunner69s]
#822016
10/04/10 11:42 PM
10/04/10 11:42 PM
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Joined: Jan 2003
Posts: 29,679 Hamtramck, PA
Alaskan_TA
Fluffy Balladeer
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Fluffy Balladeer
Joined: Jan 2003
Posts: 29,679
Hamtramck, PA
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1968 Automatics - stamped on the bell. 1968 Manuals - stamped on the pad. One of the stamps in that photo does not look like the other one to me either.
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Re: Eng & trans VIN# stamping profiles on 68 GTX - OK?
[Re: superbyrd]
#822026
10/05/10 01:04 AM
10/05/10 01:04 AM
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Joined: Aug 2010
Posts: 1,525 Eastern shore, New England
roadrunner69s
OP
pro stock
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OP
pro stock
Joined: Aug 2010
Posts: 1,525
Eastern shore, New England
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Thanks for posting those photos Barry. That 73 340 block looks pretty strange with a tripling of the first digit only. One wouldn't think a machine did that. At least they are all in somewhat of a line with slight tweaks up or sideways. RR69s
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