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**DANTIP** · 06-25-2009, 09:41 AM

After significant research, cleaning and searching, I have documented my rear differential as original. The build sheet and POP have differential information I was hoping to confirm with the axle code. I searched this site and could not find information that helped me find the code ( my code was not in the same location as the only photo on the site). I came across a Camaro site that had exactly the info. I needed. My casting date was J 10 1 which is December 10, 1971. My axle code is RRR W354 1 which decodes to 1972 3.07 (open) built in Warren Michigan on the 354th day of 1971 on first shift. Attached are photos and sketch of info used and found.

06-25-2009, 09:41 AM	#1
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,889	Number Matching Geeks Only! After significant research, cleaning and searching, I have documented my rear differential as original. The build sheet and POP have differential information I was hoping to confirm with the axle code. I searched this site and could not find information that helped me find the code ( my code was not in the same location as the only photo on the site). I came across a Camaro site that had exactly the info. I needed. My casting date was J 10 1 which is December 10, 1971. My axle code is RRR W354 1 which decodes to 1972 3.07 (open) built in Warren Michigan on the 354th day of 1971 on first shift. Attached are photos and sketch of info used and found. Attached Images



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