what gear ratio do i have

[clang5oh]

axle code is M

 

[Stangfreak95]

Personnaly I cant answer your question on that detail. Although, IF YOU HAVE A 5 SPEED, tell me for example whats you RPM in 3rd gear at 60mph and I'll be able to help you. Need you rear tire size also. ex: 245/50/17

 

[clang5oh]

2900 rpm's 255 45 17

 

[cobradvm]

2.73 with a limited slip diff.

Howard

 

[Green 94 5.0]

2.73.....

 

[clang5oh]

wow, 2.73. i'm really impressed with my cars performance despite the 2.73's.

 

[cobradvm]

if you think you may have something better in there, then what you can do is jack the rear end up, and put a chalk mark on the driveshaft. Then turn a rear wheel one complete revolution and count the number of revolutions of the driveshaft. So about 2 and 3/4 turns of the driveshaft would be 2.73s, 3 turns would be 3.08s, 3 and 1/2 would be 3.55s etc etc - you get the idea.

BTW, the axle codes are all listed in Chiltons.

Howard

 

[Rootus]

if you think you may have something better in there, then what you can do is jack the rear end up, and put a chalk mark on the driveshaft. Then turn a rear wheel one complete revolution and count the number of revolutions of the driveshaft. So about 2 and 3/4 turns of the driveshaft would be 2.73s, 3 turns would be 3.08s, 3 and 1/2 would be 3.55s etc etc - you get the idea.

That's the best way. If the speedo hasn't been corrected, then using the factory tach & speedo will not tell you that you have different gears. Have to use a GPS for the same trick.

Corral has a calculator for this kind of stuff, as well:

http://www.corral.net/tech/gearcalc.html

Dave