axles and transfer cases

[LT smoke]

does any one know of a way to identify which transfer case and front and rear axles i have ?....i did not buy this truck new and all the tags are missing i tried the white sticker under the hood but yeup its gone too ...actually the sticker is there but the writing has been rubbed off...getting ready to sell/ trade it maybe ..had a few offers on it ....i would rather keep it and do more work for a few more years i will still need to know the info for service and maintance

[98whitelightnin]

The truck in your sig will have a dana 60 front, dana 80 rear and the transfer case is an nv241hd.

[LT smoke]

great awesome ....thank you very much and after some debate i decided to keep the old beast for a while longer ....i dont suppose you know a way to find out which gearing the rear has do you 98?....i had some friends that i was able to stay pretty close to on the highway ..at excessive speed say they believe it has airplane gears what ever that means

[ISX]

Your 4wd so I imagine your tires are 265/75. At 70mph with 4.10's you will be at 2286RPM. At 70 with 3.54's you will be at 1973RPM. That's the easiest way to tell.

[Rogan]

mine also has a sticker in the glovebox door. shows my 6-holer to have 5200# front D60 and 3.55s

[LT smoke]

its a dually so the tires are only 235's but yes at 70 mph im only turning about an even 2000 rpms on the stock tach. so .....3.54 gearing then ?

[ISX]

its a dually so the tires are only 235's but yes at 70 mph im only turning about an even 2000 rpms on the stock tach. so .....3.54 gearing then ?

[flagmanruss]

As posted previously, my truck still has the sticker on the glove box door... great source of information. Also check for any original paperwork.

[Heavyd1980]

you can also jack up the rearend of the truck and mark the driveline and tire and rotate the tire one full revolution and watch the driveline. If the driveline turns 3 turns and the tire will turn about a half turn then you should 3.55 then if the driveline turns 4 turns to one its a 4.10. I believe thats the way to check or your axle should have any ID tag on it that has the ratio stamped in it!!! Dont quote me on this but i think this right.

[Rogan]

Thatll work, for sure. But I'd bet there's a label in the glove box...

[MnTom]

There should also be a tag on the rear end that has the gear ratio too.

[guesswho512]

you can also jack up the rearend of the truck and mark the driveline and tire and rotate the tire one full revolution and watch the driveline. If the driveline turns 3 turns and the tire will turn about a half turn then you should 3.55 then if the driveline turns 4 turns to one its a 4.10. I believe thats the way to check or your axle should have any ID tag on it that has the ratio stamped in it!!! Dont quote me on this but i think this right.

if you are going to jack the wheels up and count the rotations, you can also find out if you have an open or limited-slip diff. if the wheels spin the same way, you have a limited-slip. if they spin opposite, it is an open diff. but first check for the sticker under side of the hood or tag on the diff cover. it seems that diff tags often get removed(mine was when i purchased @125k). i think the dealership should be able to look it up from your VIN number also.

[LT smoke]

no sticker in the glove box ..no original paperwork ..i am the third owner ..I think... no tags on the differential havent tried jacking it up yet to rotate the tires pretty sure i have a fully locked diff though i can hear it in the summer time when the windows are down and i make a turn the tires start skipping.

[Heavyd1980]

then you very well may have a posi.

[Prowelder]

The truck in your sig will have a dana 60 front, dana 80 rear and the transfer case is an nv241hd.

Well it could have the 241LDL transfer case like mine.

[LT smoke]

241 LdL? sorry im not familiar with this one any info you can share ?

[Prowelder]

241 LdL? sorry im not familiar with this one any info you can share ?

Light duty transfer case. Don't worry, it's still pretty tough. The heavy duty unit only has a wider chain and a larger tail shaft to make it stronger.

[LT smoke]

ah ok how is this transfer case marked so i might b able to tell? as i recall the transfer case was pretty clean last year when i changed the clutch

[Prowelder]

ah ok how is this transfer case marked so i might b able to tell? as i recall the transfer case was pretty clean last year when i changed the clutch

There is a little round tag on the back side of it that tells you what it is. Is will say either 241ldl or 241 hdl.

[Rogan]

There is a little round tag on the back side of it that tells you what it is. Is will say either 241ldl or 241 hdl.

http://www.ls1gto.com/forums/attachment.php?attachmentid=129033&stc=1&d=1287012486