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gears and traction what ratio

This is a discussion on gears and traction what ratio within the Drivetrain forums, part of the LSx Technical Help Section category; For A4 cars what ratio do you recommend for 90 % street 10% track, just bolt ons, street tires with ...

  1. #1

    gears and traction what ratio

    For A4 cars what ratio do you recommend for 90 % street 10% track, just bolt ons, street tires with an option for Nitto DR. Im looking for more torque or seat of the pants kick when I floor it which wont happen if it just spins. Popular saying A4 go with 373 or would 342 do it or would 323 be enough? I have 273 now. If you answer can you explain from your experiences? Thanks!

  2. #2
    Member red99ws6's Avatar
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    everyone says the 373 but i am perfectly happy with the 323. plenty of acceleration and good mpg

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    Drag racing is a disease! RacerBob's Avatar
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    Quote Originally Posted by rickssz View Post
    For A4 cars what ratio do you recommend for 90 % street 10% track, just bolt ons, street tires with an option for Nitto DR. Im looking for more torque or seat of the pants kick when I floor it which wont happen if it just spins. Popular saying A4 go with 373 or would 342 do it or would 323 be enough? I have 273 now. If you answer can you explain from your experiences? Thanks!
    You want sop kick? Go 3.73. You shouldn't have to worry about spinning if you go with DRs.

    Going from 2.73s you should really notice a difference.

    Good luck with your build.
    Drag racing...just another numbers game.

    Vortech Super Charger, 9" w/4.11, 3200 Stall, BMR SFC, BMR TracPak, !MAF screen, 160 T-Stat.

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    Member TedsB4Csled's Avatar
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    I wish I kept my 323 and did a tune instead. My friend has 323s tuned and will beat me easily. 373 make my A4 shift quicker with normal driving and I hate that.

  5. #5
    Quote Originally Posted by TedsB4Csled View Post
    I wish I kept my 323 and did a tune instead. My friend has 323s tuned and will beat me easily. 373 make my A4 shift quicker with normal driving and I hate that.
    Are his 3.23 beating you or is his tune beating you? Are your cars and mods equal?

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    Member jujofields's Avatar
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    ...subscribed....

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    Member TedsB4Csled's Avatar
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    he's got a 99' vs my 02'...mods are; LS6 intake vs his LS1, MSD wires vs his stock, SLP MAF & smooth bellows vs his stock, gutted cats. We both have lids, hedders & exhaust, free mods. His car runs AMAZING! I assume it's the tune.

  8. #8
    I got tired of the pro and cons and gave in to the majority. I ordered 3.73 last week but I think the speed shop is playing games and told me they thought they had them in stock and a week later after 2 or 3 messages they said oops we dont have them but maybe we can get them. Funny thing is they did something similar to me with exhaust. I guess I never learn.

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    Member TedsB4Csled's Avatar
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    What brand gears? I hate when shops mess up.

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    Quote Originally Posted by TedsB4Csled View Post
    he's got a 99' vs my 02'...mods are; LS6 intake vs his LS1, MSD wires vs his stock, SLP MAF & smooth bellows vs his stock, gutted cats. We both have lids, hedders & exhaust, free mods. His car runs AMAZING! I assume it's the tune.
    SLP MAF + Untuned. Brilliant. Put the stocker back til you tune and then if you want to do something ship back that SLP unit and get set up for SD mode.

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    Member TACE02's Avatar
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    Quote Originally Posted by richard head View Post
    SLP MAF + Untuned. Brilliant. Put the stocker back til you tune and then if you want to do something ship back that SLP unit and get set up for SD mode.

    X2.


    rickssz: personally for tires I wouldn't go Nitto DRs. I chose to try out the MT ET Street Radials, and love em (they seem to love below 17 PSI and a lil smokey burnout at the track). Tire choice is a big deal here. Just like everyone else says though, the MT are NOT meant for driving in weather.
    And 373 would be a good choice. But traction on the street is always gonna be a problem, no matter what gears you choose.

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    Member 35thz28camaro's Avatar
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    go with 373, i picked up .4 in an 1/8mile going from 273 to 373; i also would not go with nitto dr's, after i did my stall i could not hook at all on 315/35r17 nitto's i went with the same size in hoosier dr's and now i hook perfect at the track

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    LSX whore allbaugh_04's Avatar
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    why not 3.42s....?

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    that's what I was thinking. Swap in a 10 bolt from a 6 speed for less then you can put in gears.

  15. #15
    Quote Originally Posted by TedsB4Csled View Post
    What brand gears? I hate when shops mess up.
    US Strange but now they want to sub Motive "if" they come in!

  16. #16
    Quote Originally Posted by allbaugh_04 View Post
    why not 3.42s....?
    I guess its like if you were buying a catback and the 2 1/2 inch and the 3 inch were the same price normally you go for the 3 inch because the 2 1/2 would work fine but the 3 might be a little better at the same price.

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    LSX whore allbaugh_04's Avatar
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    Quote Originally Posted by rickssz View Post
    I guess its like if you were buying a catback and the 2 1/2 inch and the 3 inch were the same price normally you go for the 3 inch because the 2 1/2 would work fine but the 3 might be a little better at the same price.
    Then why are you asking us for advice...get 4.56s and a trex...bigger is better

    Seems to me in the first post you are debating inbetween 3.23s, 3.42s, and 3.73s...? I'm confused

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    Member TedsB4Csled's Avatar
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    Go with Motive Gears...IMO.

  19. #19
    Quote Originally Posted by allbaugh_04 View Post
    Then why are you asking us for advice...get 4.56s and a trex...bigger is better

    Seems to me in the first post you are debating inbetween 3.23s, 3.42s, and 3.73s...? I'm confused
    I was debating and the 3.73 won the debate.

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