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Old 01-09-2006, 11:00 AM
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Ring Gear

Bought a 68 chevelle for resto all oringal has a 10 bolt non posi looking for a posi unit but don't know if it's a 8.2 or 8.5 ring gear think it's a 8.2 but not really sure any help from you gear heads thanks

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Old 01-09-2006, 11:10 AM
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You'll get better results posting this in the transmission/rearend forum so I'm going to move it there.
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Old 01-10-2006, 02:08 AM
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If it's the original rear end and it's a 10-bolt, it's an 8.2. There are some pics here: http://www.oldsmobility.com/10bolt-tech.htm , and also a list of carrier breaks for when they start asking "Series 2 or series 3?", etc.

And if you don't know the ratio, look on the edge of the ring gear for a series of numbers, such as 41 10 11 68, for example. One set of two numbers is the tooth count on the ring gear & pinion gear, and the other set of two is the manufacture date. Divide the ring gear count by the pinion gear count, and you get the gear ratio. The above numbers would indicate a 4.10 gear set (41 divided by 10 = 4.10) that was made in November of 1968.
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Old 01-10-2006, 08:16 AM
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re

hey jim fulco thanks for the info very helpful i thought it might be a 8.2 but i'll make sure by looking at the cover also check out the ratio thanks for the web site
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