Thread: Rear Axle Ratio Charts For 1967 - 1972 GM Trucks
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Old 11-26-2019, 09:48 PM   #61
LockDoc
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Re: Rear Axle Ratio Charts For 1967 - 1972 GM Trucks
Quote:
Originally Posted by davischevy View Post
Here is the stamp on my rear axle. RAY for 3.07 open. I'm going to guess it was built on the 251st day of the year, 1st shift.

Larry,

I always thought it would be the 25 day of the 1st month. Don't know for sure.

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