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What rear gear ratio?

Discussion in 'Chassis / Drivetrain / Suspension / Wheels' started by slowestmonte, Apr 20, 2017.

  1. slowestmonte

    slowestmonte Not-quite-so-new-guy

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    Hey guys, I have a 1988 Monte Carlo LS with a 305 and a 200-4r auto. It has the 7.5" open differential with 2.41 rear gears (I know, they're very very low). I was wondering what was the highest (numerically) ratio I could get with the carrier I have, and if you could attach a link to a set that would work, it would be much appreciated, Thanks!
     
  2. Algershick

    Algershick Greasemonkey

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    You've got a series 2 carrier. What gear do you want to run?
     
  3. L67ss

    L67ss Royal Smart Person

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    Personally with that setup I'd go 3.42
     
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  4. slowestmonte

    slowestmonte Not-quite-so-new-guy

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    I just wanted to know what I could run with the carrier it has, since I read somewhere I could only run up to 3.08 with that carrier (series 2)
     
  5. L67ss

    L67ss Royal Smart Person

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    You can get whatever gear you want with that carrier. Summit and jegs both have them available to fit series 2 carriers
     
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  6. Algershick

    Algershick Greasemonkey

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    They make aftermarket gear sets for all of the carriers. I have a set of 3.42's for my 2 series. You could buy a 4.56 set if you were so inclined.
     
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  7. LukeZ

    LukeZ Master Mechanic

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    https://www.summitracing.com/parts/rmg-4900011/overview/

    I think you were correct in saying 3.08 is the lowest (highest numerical) gears you can run on that rear. Heres a set from Richmond, 7.5in, 10-bolt, and 2-series carrier.

    They also make "thick gears" that can go numerically higher for the carrier you have.
     
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  8. Algershick

    Algershick Greasemonkey

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    3.08 is the numerically highest OEM set that will work in a 2 series carrier, but you can buy aftermarket gears for either 2 or 3 series carriers.
     
    #8 Algershick, Apr 20, 2017
    Last edited: Apr 20, 2017
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  9. TURNA

    TURNA Royal Smart Person

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    This is incorrect your gears are HIGH.

    The LOWER (short) the number the higher the gear.

    The HIGHER (tall) the number the lower the gear.


    3.08 and down is a 2 series carrier.

    3.23 and up is a 3 series
     
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  10. slowestmonte

    slowestmonte Not-quite-so-new-guy

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    Sorry I meant numerically higher, forgot to specify
     
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