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Old 08-18-2007, 07:46 PM
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10 bolt carrier size ID??

Could someone please clue me in on how to figure out what size carrier I have in my 7.5/7.625 10 bolt? I would like to order new ring and pinion gears but I cant find the info on how to figure out exactly what size carrier I have.

I did a quick search of the forums using the phrase "carrier size" but I didn't see what I was looking for. Sorry if I missed it.

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Old 08-19-2007, 12:29 AM
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On a 7.5" GM, factory gear ratios 3.08 and lower (numerically) are used with the 2-series carrier, while 3.23 and higher use the 3-series carrier.

http://www.oldsmobility.com/10bolt-tech.htm
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Old 08-19-2007, 10:20 AM
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... Now it all makes sense. The summit catalog I was looking at has that info listed also but I assumed it was a telling me 3.08 and 3.23 were different sizes that were measured with a set of calipers some place on the carrier.

Your the first to spell it out that 3.08 / 3.23 are gear ratios not a size measurements. I don't know why I always assume things are harder than they have to be

Thanks for the help. I imagine I'll have to look up the vin # to find out what ratio it has because its not listed in the manual.
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Old 08-19-2007, 11:19 AM
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Quote:
Originally Posted by chimera555
... Now it all makes sense. The summit catalog I was looking at has that info listed also but I assumed it was a telling me 3.08 and 3.23 were different sizes that were measured with a set of calipers some place on the carrier.

Your the first to spell it out that 3.08 / 3.23 are gear ratios not a size measurements. I don't know why I always assume things are harder than they have to be

Thanks for the help. I imagine I'll have to look up the vin # to find out what ratio it has because its not listed in the manual.
The numbers are stamped on the ring gear, there is a series of numbers (10 IIRC), the last four are the number of gears on the ring/pinion, divide those numbers and you'll have the ratio
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