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#1
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Eaton Posi assembly date
All Eaton 12 bolt posi carriers received a stamped assembly date code. The code was in the format of letter / number / letter. It seems be be fairly well known that J was used for 1969. Do we know the letters used for 1965, 1966, 1967 and 1968?
Thanks in advance. |
#2
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#3
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He is asking about the letters stamped on the outer edge of the ring gear flange on the Eaton Posi case. I've got cases that are stamped F, G, H and J. I think everyone knows that J is '69, but what are the others? The 12 bolt was produced from '65 to '72. Did these codes continue the same on the Eaton Posi case to '72?
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Freddie 1969 Camaro RS/SS396 (427) 4 speed |
#4
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Quote:
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#5
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So you could have a JJ (October 1969)? By the chart letters are for months up to 1971
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70Z28 04B Norwood Forest Green-white Stripes Black DeLuxe Interior Owned since 1978 - First Car |
#6
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The format is letter number letter. Here is one stamped C 22 H from a 10 bolt 3 series posi.
Last edited by bcmiller; 03-03-2020 at 10:02 PM. Reason: Update |
#7
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It would make sense that they didn’t use the letter I for year - but I swear I had one a few years ago with the year letter stamp being I. I could be wrong or suppose it could be later. Although they stopped being used in production in 1972, they were made much later.
Here is a later one. Year code JC - maybe 1993? Last edited by bcmiller; 02-25-2020 at 01:54 PM. |
#8
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So assuming that the E would be for the first year of production in '65, then F would be '66, G would be '67, H would be '68, J would be '69, K would be '70, L would be '71 and M would be '72? Can anyone verify this with something from '70 to '72?
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Freddie 1969 Camaro RS/SS396 (427) 4 speed |
#9
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70 date
Here is jan. 22 assembled rear gear.
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#10
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Thanks for posting that. The posi assembly date stamp is late 69, fits fine for a Jan 1970 axle assembly.
Would anyone have data from other years they would want to post from original axles? |
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