ez way to tell what the ratio is?

[sirnunya]

even if you do have the LS, i've heard the stock limited slip is not too efficient.

[Dave]

Originally Posted by SteveKran

Thanks Dave....what would it say?

On the bottom of the tag If you had a LS diff it would read 3L73 or 4L10 depending on your gear ratio. standard rear axle just wouldnt have the L

[TMTS]

I just checked the tag on the drivers door post..it says axle "D1"- just looked it up on another web site:
says I have a 3.73 with a limited slip diff.

Automotive What is my Ford rear end ratio, do I have positraction



-TMTS

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Last edited by TMTS : 08-07-2008 at 01:25 PM.

[Dave]

It should say something else on the bottom of the tag like the examples we posted

[Chewbacca]

L is for limited slip, far from a "locker". Mine doesn't even really work anymore, most of the time, I end up smoking the right rear.

[GM Duraturd]

Mine has the "L" in it (4L12) But everytime I do a burnout or am spinning in dirt or anything it spins both rear tires consistantly and they are locked together for sure.

[derrickmcphate]

in the manual it says they are less effective with larger than stock tires.... i was thinking of going to 235 85 16 anyone got them? how are they?

[Dave]

Dennis thats actually smaller than what came on your rig stock

[SteveKran]

Stock tires are 265's. I've got 305's on mine and love them. My speedo is dead on the money anywhere from 20mph up to 90mph. Even with the 305's (which are 33") they still look small on the truck. Might have to go with something bigger in the future.

[derrickmcphate]

my 305s rub when i turn and the 235 85 and 265 75 are the same height i was just gonna go skinnier better ride and mileage maybe