Gear Ratios

[98V6]

How can I check the door jam code to see what axel I have ?

 

[GREENBIOCH]

How can I check the door jam code to see what axel I have ?

If your name is correct, you have a 7.5" rear axle with 2.73 gear ratio in it. Unless someone has messed with it already.

 

[RdPonyCv]

There is also a tag on the rear differential cover but he is correct. If you have a V6, 2.73 & 7.5

 

[98V6]

2.73 seems wimply. I was unaware that all V6 had the same gears. Has anybody ever upgraded the gears if so what ratio do you recommend ? Right now its all stock and I have plans one day down the road for making some power, but for now I would like to see better pick up and I can always change the gears again later. Has anybody ever put anything like 3.73 gears in a stock V6 how does that work or is that over kill ? Its pretty much a semi-daily driver.

 

[GREENBIOCH]

2.73 seems wimply. I was unaware that all V6 had the same gears. Has anybody ever upgraded the gears if so what ratio do you recommend ? Right now its all stock and I have plans one day down the road for making some power, but for now I would like to see better pick up and I can always change the gears again later. Has anybody ever put anything like 3.73 gears in a stock V6 how does that work or is that over kill ? Its pretty much a semi-daily driver.

I have 3.73's and the stang is my daily driver as well, its not overkill. and if you have an auto, alot of auto guys like the 4.10s.

 

[marvinmycat]

4.10's ROCK in an auto!

 

[RdPonyCv]

What speedo gear do you use with a 4.10 in an auto? I have a 23 tooth for my 3.73's.

 

[GREENBIOCH]

What speedo gear do you use with a 4.10 in an auto? I have a 23 tooth for my 3.73's.

I think its the same for some reason thats what I remember?? you can always check www.steeda.com they list what you need on there site, or they used to, haven't looked in a while.

 

[marvinmycat]

Automatic Transmissions with 8 Tooth Drive Gear

1990-1998 Automatic Transmissions

2.73 Gear Ratio / Gray 18 Speedo Gear
3.08 Gear Ratio / Orange 20 Speedo Gear
3.27 Gear Ratio / Purple 21 Speedo Gear
3.55 Gear Ratio / White 23 Speedo Gear
3.73 Gear Ratio / White 23 Speedo Gear
4.10 Gear Ratio / White 23 Speedo Gear

As you can see, the 23 tooth is the last speedo gear offered. Your speedo will be off if you go with a ratio over 3.55. When you have this, you have to adjust your needle manually or get a speedcal.

The reason for the 23 tooth being the highest that is offered is due to the size of the drive gear in that it can not accomodate a speedo gear with any more teeth than that. It is physically restricted.

 

[CManT1914]

I didn't read the replies, so maybe somebody beat me to it. On the doorjamb sticker, there's a box at the bottom that says AX. In it there is a letter, here is what the letter means:

M=2.73
E=3.27
Z=3.08

 

[FunkMasterFlex]

99+ have the same stock ratio? and i cant seem to get a clear answer on whether the 99+ models require a speedo gear also or if the speedo is controlled electronically.

 

[marvinmycat]

99+ require the use of a speecal (electronic) to correct the speedo issue. Using a speedo gear will get you close, but not exact. You'd have to pull the gauge pod out and reset the needle to get it dead on.