AAM 11.5 Rear?

catbird7

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Can anyone provide information regarding the original stock / factory supplied rear that would be found in a 2004 Dodge Ram 2500 4X4 5.9 HO with 6-spd (manual) trans.
 

lpennock

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What do you want to know? Probably a AAM11.5 with 3.73 gears. if LSD, it will be a torsen style so the no friction modifier required. Recommended fluid is 75w90 or 80w90 full synthetic.
 

catbird7

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Well, it's my sons truck and I was looking for information regarding the factory aluminum dif cover.
 

catbird7

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It is the AAM 11.5 inch (14 bolt). I found MOPAR # 68149258AC covers for sale which claim to fit AAM 11.5 however for some reason everywhere I look it says this cover will not fit his truck??? Did they make different housing configurations of the AAM 11.5" rear?
 

catbird7

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Here's a picture of what I bought, now curious if it will fit.

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IMJUSTDAVE

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I think 04 had different axle company. Or was it just the manual transmission that was different in 06
 

steved

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I think 04 had different axle company. Or was it just the manual transmission that was different in 06
04 would have been a 11.5aam with the HO or 10.5aam with the SO...04.5 was the intro of the 325hp "600" 5.9l and they all got 11.5aam.

3.73 and 4.10 were both options as was the limited slip...and while the LSD didn't require LSD addirive, sometimes it was necessary to resolve chatter.

Late 05 got the aluminum G56, prior years had a cast iron NV5600...

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u2slow

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04 would have been a 11.5aam with the HO or 10.5aam with the SO...04.5 was the intro of the 325hp "600" 5.9l and they all got 11.5aam.

3.73 and 4.10 were both options as was the limited slip...and while the LSD didn't require LSD addirive, sometimes it was necessary to resolve chatter.

The factory AAM1150 'LSD' (I hate the term) is basically a tru-trac (torsen) traction device. There's no chatter in these that a friction modifier will solve.
 

steved

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The factory AAM1150 'LSD' (I hate the term) is basically a tru-trac (torsen) traction device. There's no chatter in these that a friction modifier will solve.
Keep thinking that...been there, done that. Put over 300k on mine...

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u2slow

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Keep thinking that...been there, done that. Put over 300k on mine...

Heh. There's a special case for everything... much like I leave the friction modifier out of the Jeep to make the trash-lok work better.
 

towcat

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iirc. the AAM 11.5 is the smarter cousin of the GM 14 bolt. the housing and guts may be different, but the cover should be the same.
don't quote me, I can be very wrong on this.
 

steved

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There are still clutch in there that gets squeezed...I used Royal Purple and immediately had chatter...two bottles of Ford modified later and I was good for 200k more miles...
Heh. There's a special case for everything... much like I leave the friction modifier out of the Jeep to make the trash-lok work better.

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steved

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iirc. the AAM 11.5 is the smarter cousin of the GM 14 bolt. the housing and guts may be different, but the cover should be the same.
don't quote me, I can be very wrong on this.
I used an ORU cover for a GM11.5AAM on my Dodge 11.5AAM...it didn't fit perfect, but it worked well for a lot of miles.

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