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Topic: Rear Axle Stamping Ratio Code

in Forum: C3 Driveline Components


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Rear Axle Stamping Ratio Code (1/2)
 3/2/17 5:44pm
Ole Biker
Former Member

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Monongahela, PA - USA

Vette(s):
1969 Corvette Coupe. 427/435 4 speed factory installed side pipes. Verified Numbers Matching.


Joined: 7/5/2016
Posts: 71

Hello,

After much cleaning I was able to get the code off the bottom of the rear axle carrier.

My question is, What Does The Number 1 Imply Before The Actual Code?

1AZ  9  2  69  W

     3:55 September 2nd 1969  W





Thanks for looking!

Mike C.


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Re: Rear Axle Stamping Ratio Code (2/2)
 3/2/17 11:02pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20126

That's a heavy dooty posi unit...good deal!
 Cars assembled after August '69 supposedly used the '70 axle codes....which for your car would be CAZ. Not sure why your diff has the "1" on it....could simply be an anomaly, or the guy in charge of stamping that day had a hangover....who knows....LOL The "1" is stamped a wee bit off-kilter, so my guess is it was stamped AFTER the rest of the axle code was stamped.


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