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TOP end speed with 3:73 gears

This is a discussion on TOP end speed with 3:73 gears within the Drivetrain forums, part of the LSx Technical Help Section category; Hi all I did a search and nothing came up so here it goes... I'm looking at putting in a ...

  1. #1
    BLKHWK Durango's Avatar
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    TOP end speed with 3:73 gears

    Hi all

    I did a search and nothing came up so here it goes...

    I'm looking at putting in a stall 3:73 gears and a tune. I have an a4, 99 trans am with a lid and cat back and I am just wondering what top ens speed can I get with that set up.
    I brought it up to 140 to 145 mph once and it was still going up. Not that I want to do that all the time but if my buddies and I go for a drive and they start pulling on me hard at 120mph that will suck. I have one guy that drives a 98 Corvette that's cocky and I haven't run him yet but I would like to pull on him from a roll but keep on climbing to 140mph if I can

    I know I don't need to go that fast but hey, sometimes we do.

  2. #2
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    black
    2000 camaro ss

    i dont think your top speed will drop off much. if you had a 6speed i doubt it would drop off at all. the vette however will get you on topend imo . ive had mine up to 155 in 5th gear with 323 gears.

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    BLKHWK Durango's Avatar
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    Anybody????

  4. #4
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    red
    2001 Pontiac Trans Am

    3rd gear will end around 115-120in an a4 same for 4th if your m6

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