Print Page - 12 BOLT DATE CODES

Title: 12 BOLT DATE CODES
Post by: tyrfryrtom on March 22, 2006, 02:41:43 PM

Hello,

Does the date code on the axle tube need to the the same as the casting date on the carrier housing? How far apart should they be? I have a rear that has been rebuilt and I think the axle tubes have been replaced an restamped.

Thanks

Tom

Title: Re: 12 BOLT DATE CODES
Post by: JohnZ on March 23, 2006, 02:50:58 PM

The casting date only refers to the date the iron center section was poured at the foundry; the stamped date on the RH axle tube is the date the axle assembly was completed (tubes, brakes, diff, etc.). Generally, the axle assembly date will be within 1-6 weeks after the casting date, but there are exceptions. The only "rule" is that the stamped assembly date must be after the center section casting date.

Title: Re: 12 BOLT DATE CODES
Post by: tyrfryrtom on March 23, 2006, 02:58:30 PM

Thanks JohnZ,

The date on the center section is B 7 8 and the axle tube is BU 0313. I was told that it was a March 69 3.73 posi rear.

Title: Re: 12 BOLT DATE CODES
Post by: Z71 on March 23, 2006, 07:23:17 PM

B 7 8 - Feb 8, 1968

0313 - Mar 13th

QuoteI was told that it was a March 69 3.73 posi rear

Appears to be March 1968 in a 1968 car

CRG Discussion Forum

Camaro Research Group Discussion => Decoding/Numbers => Topic started by: tyrfryrtom on March 22, 2006, 02:41:43 PM