2001 base corvette auto (rear specs)

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May 2, 2024 | 06:34 PM

Bass Tracker

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4th Gear

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2001 base corvette auto (rear specs)

Hello. Can someone give me some insight of the specs of the rear diif/axle setup size etc...on a 2001 base automatic corvette. From what I've researched, I'm guessing it's around a GM 10bolt, 8.5" diff, 1.25 axle and 29 spline, but I can't seem to find an exact answer.

Thanks,

Jay Dee

Last edited by Bass Tracker; May 3, 2024 at 04:11 PM. Reason: More precise info

May 3, 2024 | 07:49 AM

lucky131969

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Joined: Jan 2007

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From: Dyer, IN

Quote:

Originally Posted by Bass Tracker

Hello. Can someone give me some insight of the specs of the rear diif/axle setup size etc...on a 2001 base automatic corvette. From what I've researched, it's a GM 10bolt, 8.5" diff, 1.25 axle and 29 spline, but I can't seem to find an exact answer.

Thanks,

Jay Dee

What are you trying to achieve?

May 3, 2024 | 04:13 PM

Bass Tracker

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I'm just curious to see how strong the rear end setup is compared to other years because I'll be in the hunt for a vette in the near future and am looking at c4s and c5s. I would do some bracket racing with it on various weekends. Basic bolt ons and gears

Jay Dee

May 3, 2024 | 05:00 PM

lucky131969

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From: Dyer, IN

Quote:

Originally Posted by Bass Tracker

Sounds like the C5 Differential may be a little different than what you are used to.

May 3, 2024 | 05:22 PM

ipuig

Drifting

Joined: Jan 2008

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From: Florida

St. Jude Donor '09

Quote:

Originally Posted by Bass Tracker

My C4 had a Dana 36 I believe. C5s have GETRAG differential units that are bolted to the rear of the transmission, yes on a C5 the transmission is in the rear of the vehicle. If stock and unmolested, a base 2001 automatic corvette will have a 2.73 axle ratio unless it has the optional 3.15 gear. Manual corvettes came with 3.42 axle ratio. Looks like you have much to learn good luck.

May 3, 2024 | 07:30 PM

Beast

Drifting

Joined: Jul 2004

Posts: 1,677

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From: Pingree Grove IL

Quote:

Originally Posted by Bass Tracker

My C5 is set up this way. Full bolt on with an RPM stage 2 differential and 3.73 gears, yankSS3200 stall. I had the differential and converter installed at a shop. To complex for me. If you’re going to do bracket racing or any type of hard launches, you will need drag radials with this setup. I do HPDE too, that’s why I did the 3200 converter, no converter whine on a road course. 3600 or 4000 stall will launch harder, but might also tear up the stock tranny.

Good luck with your build.

pics at the shop

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