How do I find out what size gear I have if I dont know what it is. DONT SAY GLOVE BOX. It is for a NEW axle I bought from a guy from another forum. I just want to make sure the front IFS axle is a 4.10. I done really remember how to do the count revolution thing. All / Any help would be great!

 

call your local dealer and give em you vin tell em you need a printout of all the options and what the vehicle cam standard with.

Used to be someone on here who could look it up over the internet.

 

Give me the stamping on the axle for one thing, however to be completely safe to the information I give. This is the revolution process:

Mark a starting point on the Disc/Drum/axle end. You need to mark a straight line across 2 planes, so you will know precisely when a complete revolution has been made. On drums you typically mark across the drum/backing plate

Mark a starting point across pinion flange. Typically you mark straight across the protection cover of the flange onto the diff/housing.

Turn the axle shaft side of the axle one complete revolution, in doing so you will also need to count the revolutions the flange makes. This merely gives you an ideal on gear setting. For instance, 3-3/4 spins of the flange would determine a 3.73 gear more than likely, and etc.

Good luck

 

There's another way....record how fast you're going when your tach reads 2000 RPM's in overdrive....then come back and tell us. Are you still running 315/75/16's?

 

The truck did not come with this axle it is a new one form AAM (American Axle Man.) It has a few markings on it but want to be sure!




It is a front axle so I would have to drive my tuck with NO rear drive shaft. (fluid evreywhere) I know for sure the rear is 4.10 I counted the teeth. Yes I am running the 315/75/16 tires


Studlebilly I tried what you said. I pulled the front plug out of the Actuator and pluged it in to the NEW AXLE (to lock them in) right? when I turned the axles they spun opposite directions. when I turned the Pinion/ yoke it spun the axle shaft once to the 4 and a hair more turns on the pinion. So I guess I have 4.10 right?

 

youve got problems if they gave you a different gear than what is in the transfer case. Have you had it in 4x4 since the swap?

 

I'm I dont know what you are asking about the transfer case. I have a z71 has been and always will be and it has 3.73 gears in it right now. I bought a ring gear with 10 teeth and a pinion gear with 41 teeth FOR THE REAR.

I also bought a complete fully assembled front axle (CV mount to CV mount) from a guy on another forum. He told me that is has 4.10 gears in it, however I want to make sure it does before I install it. Because the front gear has to be the same as the rear gear.

Am I not making sense to anybody or what?

 

Now I get it....never would have gotten that from your first post, it was way too vague and didn't contain enough info.

 

As long as the gearing in the front axle(transfer case) and rear are the same you are good to go.

Someone please correct me if Im wrong on this one.

 

Yes and no, minimal reduction difference's between the front and rear are not fatal. Gotta remmember your more than likely engaging 4wd on lose earth in the first place. One popular offset gear commonly ran for mud setups is a 4.88 front/5.13 rear. Spins the front up faster, slows the rear down, helps with over-powering the weight distribution issue (unless your in the center engine class which is a completely different story). So its not "bad" no, but I wouldnt run a 4.10 on one side, and a 5.13 on the other. Its best to get your gearing as close as possible though.