what rear axle with auto in 2008-2009 2500

[WOT]

Did the 2007. 5-2009 2500's with autos come with 11. 5" or 10. 5" rear axles or were they like the 5. 9L configs?

 

[macdaddy]

I believe the 10. 5's were with the Mega Cab 1500's with the Hemi only.

The 11. 5's are always with the Diesel's on both the 2500/3500's



Mac

 

[Cosmo]

I believe diesels always had the 11. 5 and the gas engines had 10. 5s

 

[WOT]

2003-2007. 5 autos in 2500's had 10. 5" (unless it was a manual then it was 11. 5")
2nd gen 2500 autos has D70s (unless it was a manual then it was a D80)

It makes sense that with the 6. 7L they went to all 11. 5s as they have more power stock.

 

[SWithrow]

WOT is correct, if you open your glovebox there is a info label and it will tell you what axle(s) you have and if the anti-spin option was installed.

 

[Bob V]

Only the early 47re With the SO Diesel autos had the 10. 5. When they went to all manuals and automatics haveing the HO Diesel they all have 11. 5. I am NOT sure what thw SO Diesels manuals had. Anything Diesel after 2004 will have the 11. 5

 

[SRadke]

I am NOT sure what thw SO Diesels manuals had. Anything Diesel after 2004 will have the 11. 5

All the manuals had 11. 5". My 03 SO 5spd did.



-Scott

 

[Bob V]

All the manuals had 11. 5". My 03 SO 5spd did.



-Scott

Thanks Scott, I couldn't remember if ALL the manuals had the 11. 5 or not.

 

[rscurtis]

BobV wins the prize on this one. My '03 auto has the 11. 5" axle. The 10. 5" is reserved for the hemi-powered 2500 trucks.

 

[WOT]

Did some more reading... it sounds like EARLY 03,04 NON HO 2500 autos had 10. 5, all others had 11. 5. 04. 5 and up all were 11. 5 for any transmission behind a Cummins. Can anyone confirm?

Interestingly, i looked in my glove box and found no sticker? not sure what's up with that. But I do have the build sheet so I know for sure mine is a 11. 5 (early '07).

 

[SRadke]

Did some more reading... it sounds like EARLY 03,04 NON HO 2500 autos had 10. 5, all others had 11. 5. 04. 5 and up all were 11. 5 for any transmission behind a Cummins. Can anyone confirm?

This is true but as mentioned above, you could order the 11. 5 in those trucks as well so even an 03 SO auto may have a larger ring gear.

 

[SWithrow]

Did some more reading... it sounds like EARLY 03,04 NON HO 2500 autos had 10. 5, all others had 11. 5. 04. 5 and up all were 11. 5 for any transmission behind a Cummins. Can anyone confirm? (early '07).

Just double checked my glovebox info tag and indeed I have the10. 5. I have a Non HO...

 

[rscurtis]

I believe SRadke is correct. Once the supply of 47 RE's was used up, the 48 and the 11. 5 axle were used together, even if you ordered the standard output (250HP) engine. I remember this when I ordered my '03, I was considering the SO engine because it came with the 48 and the 11. 5, but my better judgment prevailed and I ordered the HO engine.