Are 2500 and 3500 rear ends the same?

[Garry Verheyden]

Does anyone know if the rear ends are the same in the 03 2500s and 3500s if they both have the auto transmission? The second gen. had the Dana 70 and 80 respectively. My future plans are to buy a 03 auto with a strong rear end but light weight for racing. If I can aviod the 3500srw I will since it is about 500# heavier than the 2500.

Garry.

 

[ntenna]

Originally posted by Garry Verheyden

Does anyone know if the rear ends are the same in the 03 2500s and 3500s if they both have the auto transmission? The second gen. had the Dana 70 and 80 respectively. My future plans are to buy a 03 auto with a strong rear end but light weight for racing. If I can aviod the 3500srw I will since it is about 500# heavier than the 2500.

Garry.

With the ETH/DEE both have the larger rear, 2500 and 3500. But the SO 2500 auto gets the smaller rear. The auto in the 3500 SRW was getting the larger rear, because of the bigger brake package. With the HO/48RE coming out, the larger rear should be part of that package on both 2500's and 3500's.

 

[Garry Verheyden]

Thanks John,

So I should wait for the HO auto. 2500 to come out. Do you know what they call the two different rear ends?

Garry.

 

[DIESELMAN]

http://www.americanaxle.com/technology/tech_prod_dl_rearaxle1150.html



For the 11. 5' and





http://www.americanaxle.com/technology/tech_prod_dl_rearaxle1050.html



For the 10. 5"



The Diff is the TracRite open and the Limited Slip is the TracRite GT at



http://www.americanaxle.com/technology/tech_prod_dl_diff.html#TRO

 

[Garry Verheyden]

Thanks Dieselman,

The website showed the specs on the two 8450NM torque on the 1050 and 11300NM torque on the 1150 . I wish it was in ft lbs so I can relate. The weight that the axles are rated for is HUGE!! The 1150 is designed for 10,890 lbs on the rear axle!!

Garry

 

[DIESELMAN]

The Axle is certainly not the weak link.



1 NM is . 7375ft lbs, so the AAM1150 is rated for 8333. 75 lbs/ft. Of course this doesn't take into account the gearing, pinion, ring, diff , leaf springs etc, only the axles, housing and mounting pads. It is hellacious though isn't it?



I believe the fronts are AAM925 in all models too.

 

[BV]

conversion site

FWIW - 11300 newton meter = 8,334. 452584 foot pound according to this online conversion site



Better yet: 11300 newton meter = 70,529,023,223,584. 54 gigaelectronvolt

 

[DIESELMAN]

BV - And to think my College Professor rounded off my calculus grade to 4. 25, that rat I knew it was higher!

 

[jray]

I just ordered initially a 2500 slt 4x4 with the HO engine. The base package truck came with the hemi engine and the 10. 5" rearend. Listed on the options sheets was the HO engine. In the spec. 's next to the HO it stated 11. 5 rearend req'd with HO and v10 8L. I later changed the order to a 3500 due to the low load capacity of the 2500 (diesel/4x4) which was a little over 2100 lbs. The 3500 has a load capacity of a little over 3000 lbs. (QC diesel/4x4). The 3500 model might have better rear brakes.



According to some Dodge material that I have, the 2500 rearend has twin 1. 77" pistons in the brake calipers. The 3500 has twin 2. 01" pistons in the calipers. The only problem with this info. is they don't say if they are compairing the 10. 5" to 11. 5".



You definitely can get the 11. 5" in the 2500 with either the HO or V10.

 

[Casey Balvert]

All 3500s have the 11. 5 rear ends and larger pistons in the rear calipers. The caliper piston size is specific to the 2500 or 3500 and independant of rear axle size.



Casey

 

[Dean Upson]

The front caliper size is the same: 2x2. 220"



Rear caliper size is the same on the SRW: 2x1. 77"

DRW: 2x2. 01"



Specs are on the TDR Home Page.



Dean

 

[PLohr]

Are there any distinguishing visual features of the 10. 5" or 11. 5" AAM axles that can be seen without removing the cover? Thanks for any help.

 

[SP Diesel]

I think you will find that like the Ford 250 and 350 the only real difference between the 2500 and 3500 SRW trucks is the stated GCVW and the 3500 comes with helper springs.

 

[staarma]

Are there any distinguishing visual features of the 10. 5" or 11. 5" AAM axles that can be seen without removing the cover? Thanks for any help.

The only way I would know would be by looking at the white sticker on the driver's side valve cover. If it sayd the advertised HP is 305 or 325 then it has the 11. 5 for sure. The other way is by the transmission. If it is a manual then all of the 6 speeds got the 11. 5 and the 5 speeds got the 10. 5. The 47re auto got the 10. 5 and the 48re got the 11. 5. Some have argued that there were some 47re that got out with the 11. 5 but I think that was only for the 3500 and I doubt it anyway. Hope this helps.

 

[jwilliams3]

I dont know if this has been mentioned yet but the Dually 11. 5" rear ends have a larger hog head on the sides than the 11. 5" 2500 rear ends do.

 

[Cal Brewin]

Wow, almost a 4 yr span 'tween posts on this thread,1/18/03 to 12/26/06..... nice!

 

[Matt400]

Are there any distinguishing visual features of the 10. 5" or 11. 5" AAM axles that can be seen without removing the cover? Thanks for any help.

I am not 100% on this but it seems to me the 10. 5 had smaller diameter axle tubes. I do know for a fact that at least some 03 48re 2500's had the 10. 5's cuz I owned one and it was a 235hp.



The fluid capacities are different between the 2. I think what they were doing in 03 was putting them in the lower powered trucks until supplies ran out and then DC decided to use the 11. 5 on 2500's same as the 3500's. As far as I know that transition was completed that year so 04 & up all got 11. 5's

 

[RottonRob]

Now that it has been 3years between posts. How about the rear ends in the 2oo7's



What is the difference between the 2500's and 3500's ? Same or different rear ends. How about load carrying. Thanks