Thread: Sold original GM 12 bolt gears 3.31 dated 1977
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Old 08-04-2020, 05:41 AM
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AnthonyS AnthonyS is offline
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Default original truck GM 12 bolt gears 3.73 dated 1977
SOLD

Hi Everyone, I have some take out GM original gears

They are original 3.73 gears as shown with no fatal issues; they've been bouncing around the shop for a while - always thought I'd use them.

11-41

seem to be dated JAN 1977 - I believe them to be out of a truck.

ring part number not fully readable - almost looks like it was stamped before machining... but could be 3817778 if you use your imagination.

339624 pinion - other part cross numbers I believe are 6260542 & 6260541 or 3884935

Very usable as shown, please see photos. Swapped for a 4.56 set.

Nothing beats GM gears. Even though these are dated January 1977 - they are real GM truck housing gears!

shipped to the 48.

Thanks sYc, be safe & well friends!
Anthony
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Last edited by AnthonyS; 09-20-2020 at 04:16 AM. Reason: sold
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