My '05 Quad Cab with 4 speed auto and 3.7L is rated at 4450 lbs maximum trailer weight. The same configuration in an '06 is rated at 4900 lbs maximum trailer weight. Anyone know why?

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2005 Dakota Quad Cab

They might have made a couple of adjustments to the newer engine, maybe a different gear ratio, newer tranny, etc.

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I own a Charger now and I love it!!

I have an 06 with the 4speed and the trailer package. The 4900 pounds is only if you upgrade to the 3.92 gear ratio with the rear-slip differential. The 4 speed auto comes standard with the 3.55 GR (no rear-slip) and that's where you get the 4450 rating.

Thx. Yes, I do have the 3.55 GR. I do have the rear slip differential.

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2005 Dakota Quad Cab

where do you find the gear ratio for your truck

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2005 3.7 Ram
modified ram air to airaid cai
liberty intake tube
hooker exaust
Jet stage 2
next 180 stat
fast man modified TB
polk audio front and rear

My 2006 Dakota brochure lists the following Maximum Towing ratings for the 3.7L

Dak CC 4x2 --- 4,900 lb

Dak QC 4x2 --- 4,800 lb

Dak CC 4x4 --- 4,700 lb

Dak QC 4x4 --- 4,600 lb

"All specs are based on properly equiped vehicles."

I can not find any information regarding what is a properly equiped vehicle except I would assume it would have to have the towing package. Nothing indicates a Max Towing weight is dependent on the RER or inclusion of anti-spin.

The 4.7L and the 4.7L HO have the same max except for the CC 4x4 which has a 50# lower rating for the HO.

If someone has the data from 2005, we can compare.

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I started out with nothing, I still have most of it left.