3.73 gears question?

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07-22-2013, 10:32 PM

Wayfastwhiteyaz

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3.73 gears question?

I want to upgrade my stock gears and im not sure what to go with. Do i need a series 2 carrier my car is and A4 with 3.23 gears. i was planning on buying motive 3.73 gears what install kit should i go with?

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07-23-2013, 11:48 AM

FirstYrLS1Z

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an A4 with 3.23's would have/be on a 3 series carrier. 2 series carriers were used for 2.73s' and 3.08s'.

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07-23-2013, 02:50 PM

Wayfastwhiteyaz

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so it shouldn't matter the carrier size with 3.73s?

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07-23-2013, 05:35 PM

FirstYrLS1Z

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it's not carrier size,it's carrier series. But yes,carrier size matters when ordering gears for a GM 10 bolt. The common 10 bolt sizes are 7.5/7.625(4th gen f-body rearend from the factory),8.2,and 8.5/8.625.

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07-23-2013, 05:37 PM

alexus6798

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Quote:

Originally Posted by Wayfastwhiteyaz

so it shouldn't matter the carrier size with 3.73s?

You need to get gears for a series 3 carrier.

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07-24-2013, 08:24 AM

mjs1012

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Get Motive gears in the blue box for a 3 series carrier and a ratech complete install kit. The part # is gm75373 for the gears. I used these in my rear and they are dead quiet so far after 200 miles.