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What do you know about 3rd gen borg warner rears?

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  • #1

    What do you know about 3rd gen borg warner rears?

    Little background.. my car has a 10 bolt 3.23 setup in the rear with drum brakes. I'm looking into swapping that over to a rear disc setup with 3.73 gears. Looking back, my old 85 TA had a 9 bolt out back with a baby gear BUT I had disc brakes. I'm debating looking into finding one of these borg rears and installing a 3.70 gear (i was told that its the biggest ratio available for that particular rear)

    Can anybody confirm that this will swap into my car? Any foreseeable issues?

    I've heard that this rear is stronger than the 10 bolt.. can anybody confirm?

    What is the going price for one of these bad boys?

    Thanks!
    Tags: 3rd, 3rd gen, baby, bad, biggest, bolt, boys, brakes, car, disc, drum, finding, firm, gears, gen, installing, issues, price, rear, rears, setup, stalling, stronger, told, war
  • #2
    Yes, stronger than a 10-bolt and no c-clips! You can get a 4.11 gear and everything else here: http://9bolt.com/

    I have a complete 3.70 gear set install kit with a TA cover if you're interested.
    sigpic

    88' Trans Am 350 TPI




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    • #3
      Right on! I'll keep that in mind Matt. I think the 3.70 would be a nice upgrade to my current gearing.. The rear disc brakes would be a plus as well.

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      • #4
        The rear end to get is the 89+ 3.45 gear 9-bolt with aluminum calipers that came on T5 equipped cars. The iron calipers on the 9-bolts are not that great.
        sigpic

        88' Trans Am 350 TPI




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        • #5
          Originally posted by scholtmj View Post
          The rear end to get is the 89+ 3.45 gear 9-bolt with aluminum calipers that came on T5 equipped cars. The iron calipers on the 9-bolts are not that great.
          Nailed it with that post. I thought I saw a 9 bolt on the Grand Rapids CL...I'll have to search.

          Edit:

          Guy has two, but they are from 87's I guess. Can't beat the price though, comes with everything you need I guess
          http://grandrapids.craigslist.org/pts/3843883745.html
          Last edited by hoogiesngrinderz; July 11th, 2013, 01:36 PM.

          1998 Camaro Z28 - Bright Red, 6.0 TR224, 4l60e, 3.42 Eaton TrueTrac
          1989 Camaro IROC-Z Convertible - 355 big tube TPI, WC T5, 3.42 Zexel Torsen, CTS-V/C4 brakes
          1955 Bel Air 2 Door Post - 357 TPI, Muncie M20, 4 wheel disc

          2006 Saab 9-7x 5.3i Daily Driver

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          • #6
            Originally posted by hoogiesngrinderz View Post
            Nailed it with that post. I thought I saw a 9 bolt on the Grand Rapids CL...I'll have to search.
            2.77 gears and iron calipers? Saw that one too.
            sigpic

            88' Trans Am 350 TPI




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            • #7
              You cant put 3.70 gears on a 2.77 carrier do u still have the 9 bolt stuff

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              • #8
                Originally posted by sojer View Post
                You cant put 3.70 gears on a 2.77 carrier do u still have the 9 bolt stuff
                Correct and yes, still have the 3.70 gears and install kit.
                sigpic

                88' Trans Am 350 TPI




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