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REAR END CODE

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Old Oct 29, 2001 | 04:29 PM
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From: potsdam ny
Default REAR END CODE

just recently picked up a rear end,but cant figure out what it is other than corvette. HO33 W9E1, that was all i could get off it. any help would be greatly appreciated. scott
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Old Oct 29, 2001 | 07:41 PM
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Default Re: REAR END CODE (Belly's72)

just recently picked up a rear end,but cant figure out what it is other than corvette. HO33 W9E1, that was all i could get off it. any help would be greatly appreciated. scott
OK, this is from my 70-72 Judging Reference Manual and I will give it a shot. "The production code for 1970 consists of a number (for the shfit that produced the unit), three letters that are the ratio code, the date produced (month 1-2/day/year) and suffix letter for the plant that produced the differential."

W9E1 for 71-72 "the stamping begins withs two letters for the ratio code, a letter for the axle plant, one to three numbers for the julian day of the year, a letter for the Postitraction source, and a number for the shift." As quoted from the NCRS 1097-72 Corvette Technical Information and Judging Guide.

Therefore, this would be "W" for the Warren Motive axle plant, "9" is the julian day = January 9, "E" is for Eaton as the maker of the positraction, and 1 is the first shift.

Are you certain of the H033? Perhaps it is something else. You should have a code on there for the ratio, often beginning with the letter A.

Can anyone correct me on this or give light to the H033?

Gary
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Old Oct 30, 2001 | 01:42 AM
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Default Re: REAR END CODE (Belly's72)

gary, thanks, that narrows down the year. it was tough for me to read even those numbers, i know there should be a 2 letter axle code, but didnt see anything that resembles it. scott
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Old Oct 30, 2001 | 09:00 PM
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Default Re: REAR END CODE (Belly's72)

I can't figure out my 66's rear end code, perhaps you guys could help me as well..... On the bottom of the diff, there are only three numbers:
11 24 65
This does not jive with anything else I have read. I am pretty sure it is a 3:55 from counting revolutions of wheel and pinion. Is this the casting date?

thanks
Matt

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