I have two trucks one with a 4.10 diff and one with a 3.54 that is a non runner. I would like to change the 4.10 to a 3.54 using parts from the other axle. Can anyone tell me what parts I have to change to achieve this and whether these two have interchangeable internals? Here are the details copied from the tags on each axle.
52069468AF
3.54 606095
DANA
46293 2
114 8
REV D
09 07 95

52069471AJ PL
4.10 606242-4
DANA
46293 2
181 9
REV D
09 07 95

 

Just swap axles ??

 

based on date (last line if i remember correctly) all the parts should be interchangeable. minus axle shafts if one is a SRW or DRW. i think those are diff

 

As mentioned above, swap the entire axle. What truck is the 4:10 coming out of, 2500 or 3500? If its coming out of a 3500, Dana 80, I might be interested in the set up for my truck.

Dave

 

Thanks guys, I sort of fugured that was the best way to go. The only problem is that the 4.10 is a Posi-Lok where the other is not. Both are out of a 2500. I guess I will just have to stay with the 4.10 and put taller tyres on the truck.

 

I am not understanding ..me too dense.....ugh ugh Tell me ugh why not just swap axles ugh !

 

I live in an area where a lot of the roads are gravel and where the snow hangs around in the winter for several months so a Posi-Trac 4.10 rear end is more desireable than a non Posi-Trac 3.54. Ideally, I would have liked a 3.54 Posi-Trac but I don't have the skill or the cash to achieve that so, I will leave things as they are for now.

 

Me Cave man UGH UGH
still no understand..are you wanting to put a LSD where there is..not one ??

 

All that needs to be done is to interchange the crown and pinion gears. Sounds simple but...... the pinion must be shimmed for depth and preload, and while it's not necessary to dismantle the clutch pack to get the crown gear off chances are the "contact pattern" on the gears may require re-shimming of the carrier bearings to get the "desired" pattern. All this IS very doable, the toughest part is determining pinion depth.

Stamped on the end of the pinion gear is the "variance", you could compare the two and measure the shim pack from each pinion, with a little math come up with a depth that might be right on. Standard depth is 5.812 inches then take into account the variance. Next do a pattern, if there is no way you can get a good pattern you could always go back to the original IF you write the shim pack measurements down.

 

You would have to buy a shim kit and that isn't cheap about $300. Also without dummy bearings set and proper pullers to remove the bearings it is not easy job. Not for a novice weekend mechanic. It usually takes me around 4 hours even with proper tools. If not set up properly it will be noisy. American axle diff's are simple to rebuild also dana 9 1/4 since the pinion depth is the only shim that you need to get right. That along with pinion bearing preload. Backlash is easy to set with these diff's using a side bearing adjuster turning tool.

 

I bought a crown and pinion from a member here and thats all we did for the switch.....My friends shop here in Kamloops charged me $500 to do it all....Dropped me down 300 rpm's..And still have the posi!

 

4.10 gears will not fit on a 3.54 carrier or vice versa. carriers are different sizes.

 

Mine did...........I have dana 60 and 70