Thread: Sold NOS 12 bolt GM 4.88:1 gears - ring and pinion 3961404 3862528 3862516
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Old 12-09-2017, 11:09 PM
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Ring is dated 11 68 part number (as shown) is 3862528 8 39 which of course means 4.88

Pinion is dated 2 69 part number (as shown) is 3862516 8 39 which of course means 4.88
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Last edited by AnthonyS; 12-10-2017 at 01:15 AM. Reason: add part numbers