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  • before and after gears

    hey this might already be posted somewhere but i couldnt find it. i was just curious to hear some 1/4 mile times before and after gear upgrade. also to you guys think that 4:10's is too steep for a 3.4 v6? i have 3:23 right now and i can get a 3:42 plus lsd rear axle for 250 and install it myself. however the 4:10's are only 300 and i was thinking that would be alot quicker off the line but i think it might kill my top end.
    1987 Buick Grand National drivetrain in my 1993 Pontiac Firebird. PT53 turbo, 212/212 comp cam, 3400 lockup converter, stock heads, Precision bar & plate FMIC with 3\" piping, 1994 z28 rearend, hotwired walbro 255 fuel pump, Nitto drag radials

  • #2
    yea 4:10s would be way to steep and to much for your 3.4, 3:42s are nice all around, good acceleration, and you still have good top end with them as well.
    http://www.bowtiev6.com/

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    • #3
      i have a buddy with a 160 hp tbird that has 3.73, and it's just too much gear for him. I think I'm gonna wind up with 3.42 because that's what i can get cheap, and i think it'll make a huge difference with the lsd and all. Just go with the 3.42, and enjoy!

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      • #4
        thanks for the advice guys, i am gonna have to look into doing a complete rearend swap, because that is how it comes, should be easy except for the new disc brakes, i asked a friend and he said all i would need is a proportioning valve.
        1987 Buick Grand National drivetrain in my 1993 Pontiac Firebird. PT53 turbo, 212/212 comp cam, 3400 lockup converter, stock heads, Precision bar & plate FMIC with 3\" piping, 1994 z28 rearend, hotwired walbro 255 fuel pump, Nitto drag radials

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        • #5
          What about 3.73s?
          I have 3.73s in my car and they are not too much gear at all [img]smile.gif[/img]
          My top end was not hurt either... car pulls harder in every gear like it should. Only thing limiting my top end is horsepower LOL
          <b><a href=\"http://members.cox.net/95batmobile/d86f.jpg\" target=\"_blank\">Sinister Six©</b></a><br /><a href=\"http://www.sounddomain.com/id/95batmobile\" target=\"_blank\">My \'95 Bird</a><br />I am not afraid of storms, for I am learning how to sail my ship.

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          • #6
            hey 95batmobile what kind of times do you run in the 1/4 mile?
            1987 Buick Grand National drivetrain in my 1993 Pontiac Firebird. PT53 turbo, 212/212 comp cam, 3400 lockup converter, stock heads, Precision bar & plate FMIC with 3\" piping, 1994 z28 rearend, hotwired walbro 255 fuel pump, Nitto drag radials

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            • #7
              I just recently purchased 3.73's with LSD, once i get them in I will post before and after times
              Stephen Cruikshank<br /><br />Selling some stuff so all I have left is the FRA, !MAF Screen, whisper lid, Holley PowerShot, 3\" catback, and 160* thermo on the car<br /><br />I Practice Street S.M.A.R.T.S. - do you?

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              • #8
                i have 3.42's good all around gear.
                New:04 GMC Sierra 1500 RCLB 4x4 5.3 GU80 3.73\'s.<br />Truck pics<br />Mods<br />Go fast: Panel K&N filter and soon SS truck catback.<br />Appearance: Stull Billet grill,Weston Chrome step tubes,Rhino Chrome hitch step,ARE painted fiberglass cover,Silver star lighting.

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                • #9
                  Originally posted by gergwheel:
                  hey 95batmobile what kind of times do you run in the 1/4 mile?
                  That is a very popular question and I havn't the slightest idea... lol

                  Every time I try to get together with friends at the track they all cancel :(
                  <b><a href=\"http://members.cox.net/95batmobile/d86f.jpg\" target=\"_blank\">Sinister Six©</b></a><br /><a href=\"http://www.sounddomain.com/id/95batmobile\" target=\"_blank\">My \'95 Bird</a><br />I am not afraid of storms, for I am learning how to sail my ship.

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