differential gear ratio identification.

[outlawed]

Is there anyway of telling what gear ratio is in a diff? Are there any stamps on the diff? I'm shopping around for 4.88s there's a few with the diffs off but is there anyway of actually telling what's in it?

Thanks for the help everyone.

 

[KidVermicious]

Count the teeth. There's pinion colors, but they aren't reliable. If the diff is still in the truck, you can do the spin and count method. Or look it up by the axle code on the vin tag, but that's not 100% either. Best way is to count the teeth.

 

[nevada]

Is there anyway of telling what gear ratio is in a diff? Are there any stamps on the diff? I'm shopping around for 4.88s there's a few with the diffs off but is there anyway of actually telling what's in it?

Thanks for the help everyone.

the best way is to count the teeth. if the 3rds are already out, this is easy to do.

if you are buying just a 3rd member, it will be out anyway...

if you are buying a complete rear end, have them pull the 3rd so you can inspect it. if they aren't willing to do that(or let you do it) move on.

edit: kid beat me to it! lol

 

[outlawed]

Ok Vin code on mine is g284

I'm looking a set off of a vin code g144

 

[outlawed]

So my t4r has 4.3 and the set I'm buying has 4.88.. If that's correct. .

 

[Scalded_Dawg]

So my t4r has 4.3 and the set I'm buying has 4.88.. If that's correct. .

That is correct according to this: Gearratiosanddiffs

 

[outlawed]

What are the chances the chart is wrong?

 

[UnderFire]

What are the chances the chart is wrong?

Pretty high from what I've seen, I know mine was wrong.

 

[outlawed]

Damn ok then What did 95 t4r auto 4x4 come with?

 

[outlawed]

How does the spin method work?

 

[outlawed]

Disregard I figured it out. 4.88. Winner winner chicken dinner.

 

[Pisa 8687]

Disregard I figured it out. 4.88. Winner winner chicken dinner.

Just saw this post. Glad you got this worked out. A lot of the 2nd gens have factory 4.88.

 

[outlawed]

Yeah I'm pretty stoked about the find. Pics to come.

 

[KidVermicious]

What are the chances the chart is wrong?

VIN just tells you what gears the truck rolled off the line with. Nobody updates the VIN when they regear . It's a good guide when you're scoping trucks in the junkyard, but always count the teeth.

 

[outlawed]

Ahhhh gotcha. That makes sense