Difference between 7.5 and 7.625 ring gears

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04-11-2002, 12:46 PM

jeffs82z28

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Difference between 7.5 and 7.625 ring gears

Would somebody please tell me if I can install a 3.42:1 ratio 7.625" ring and pinion set onto a 7.5" limited slip carrier that now has a 3.23:1 gear set?
I can get the 3.42 for cheap cheap, and couldn't find any answers, so I thought I'd throw it on the board.
Thanks

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04-11-2002, 05:12 PM

Jay 727

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Re: Difference between 7.5 and 7.625 ring gears

Quote:

Originally posted by jeffs82z28
Would somebody please tell me if I can install a 3.42:1 ratio 7.625" ring and pinion set onto a 7.5" limited slip carrier that now has a 3.23:1 gear set?

Thanks

Yes you can.

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04-11-2002, 09:06 PM

AlkyIROC

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Car: 87 IROC L98

Engine: 588 Alcohol BBC

Transmission: Powerglide

Axle/Gears: Ford 9"/31 spline spool/4.86

They'll both fit on the same size carrier. GM only increased the size of the ring gear slightly. Nothing else changed.

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04-11-2002, 11:55 PM

jeffs82z28

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Fantastic:rockon:
I thought it was that way from checking catalogs and what
other info I could find, but I wanted a definite answer before
I started the project.
Thank you very much for the help