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Rear Axle Stamping Ratio Code

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Rear Axle Stamping Ratio Code

Posted: 3/2/17 2:44pmMessage 1 of 2
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Monongahela, PA - USA
Joined: 7/5/2016
Posts: 71
Vette(s): 1969 Corvette Coupe. 427/435 4 speed factory installed side pipes. Verified Numbers Matching.
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

Posted: 3/2/17 8:02pmMessage 2 of 2
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22714
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
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.

Joel Adams
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