Thread: How to tell what gear ratio I have?

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  1. #1 How to tell what gear ratio I have? 
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    It's a 4t65e hd from a 02 regal 2800sc.

    86 Fiero se convertible 3800sc 4t65e HD(2002), Gen V, 3.3 pulley, SD headers
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  2. #2 Re: How to tell what gear ratio I have? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    2.93.

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  3. #3 Re: How to tell what gear ratio I have? 
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    Quote Originally Posted by Fivefingerdeathpunch View Post
    2.93.
    Thanks is that a good gear for the 1/8 mile or is there better and do I have the limited slip?

    86 Fiero se convertible 3800sc 4t65e HD(2002), Gen V, 3.3 pulley, SD headers
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  4. #4 Re: How to tell what gear ratio I have? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Sure it's fine. You'd likely notice zero changes with a 3.29 trans in the 1/8th.

    No factory trans has a LSD I think. You can spin both tires with ease though, just need enough power.

    Foot brake it to 2000-2500 and roll into it and pin to the floor once you know it's not going to break em loose.

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  5. #5 Re: How to tell what gear ratio I have? 
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    Righto thanks.

    86 Fiero se convertible 3800sc 4t65e HD(2002), Gen V, 3.3 pulley, SD headers
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  6. #6 Re: How to tell what gear ratio I have? 
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    2/10s quicker in 1/4 mile with 3.29s
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  7. #7 Re: How to tell what gear ratio I have? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Quote Originally Posted by l67ss View Post
    2/10s quicker in 1/4 mile with 3.29s
    Sadly there is no hard data on any of that.

    It's all about the driver and always will be.

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  8. #8 Re: How to tell what gear ratio I have? 
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    Was just going off perf specs comparing comp gs to other gtps. Mebbe im just tryin to justify my non hd trans
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  9. #9 Re: How to tell what gear ratio I have? 
    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Perhaps lol.

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  10. #10 Re: How to tell what gear ratio I have? 
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    Hard to find a 1/4 for dd's
    2002 Fully Loaded GTP. Cat back exhaust and 20% window tint all the way around(Rollin in the dark). Soon to be CAI, headers, and high flow cat.
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