Decided on the gears -

V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

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Old 05-04-2013, 09:14 AM   #1
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Default Decided on the gears

i've talked on and off about getting gears and various upgrades, and it seems like gears would help me the most and i am damn tired of how bad my acceleration is. so a few questions

1. is it okay to get gears without a t-lok? i can't afford to do both atm, and i don't race i just want better acceleration during stop and go driving like red stop lights where i am getting beeped at by toyota corollas.

2. what exactly is a gear change? is it changing out the gears in the transmission? sounds like a big job, can not using stock gears damage my car? How many hours of labor would it take the mechanic (he is 70$/hr)

3. these are what i have decided to order, are they compatible with my 98 v6 stang and should work smoothly? (i do need 4.10 gears right?)


bearing kit

also it recommends i need a speedo recalibration tool, can i just use a speedo gear? if so, how many tooth speedo gear should i get? whats the difference in number of teeth? i notice for 98 v6 they make 19, 20 and 21 teeth speedo gears.

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Old 05-04-2013, 09:25 AM   #2
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Re gear changes the gears in the rear end. Not really a good idea to do a re gear without a t-lok as only one wheel will spin and you will have no traction and more torque going to it.

The number of teeth is dependent on the gear ratio you go with to keep your speedo correct. It's not to important on a 94-98 car as the speedo does not control the shifting. Just follow behind someone you know and have the do dead 60 and make a note of what your speedo reads so you know how many miles off it is and can adjust your driving accordingly.

A cheaper alternative would be to find an 8.8 from 94-04 and have it re geared, factory limited slip already in that as well as the re gear will be cheaper to have done with the rear end out of the car already. This is not a job recommended for beginner mechanics, this is something I won't even do on my own.
Better off to have a licensed shop do it that way you have some kind of warranty or guarantee of the work in case it craps itself.

Last edited by BabyGT; 05-04-2013 at 09:28 AM.
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Old 05-04-2013, 09:35 AM   #3
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tune & gears be your best bet
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Old 05-04-2013, 09:39 AM   #4
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damn this sounds way more complicated than i thought would be :|

What other upgrades would you recommend for acceleration? I saw in my other thread that underdrive pulleys don't do too much, and i already have exhaust and intake, and people say most the other bolt on mods don't produce easily visible gains....i would just say screw it and SUPERCHARGE but i see the cheapest kit is 3k...:|

should i just accept my lot in life and maybe just push the gas pedal down more when i have corollas honking at me?
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Old 05-04-2013, 12:39 PM   #5
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its really not a big deal, being a single port you should be able to get away with a tlok, your choice of gears and the bering kit, 98 IIRC you could use the speed cal or a tuner?
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