My 1996 Dodge Ram 1500 4x4 (5.2, auto) came stock with 245/75/16" tires and 3.55 gears. First time I put new tires on it I went up to 265 tires. Now with almost 200,000 miles (198,500) I just put new 285/75/16" and 16x8" Dick Cepek tires and wheels on it (FC II tires and Torque rims). It drove a bit like a dog with the factory gears and 285 tires, which I expected and anticipated changing the gears to 4.10 soon afterwards. I'd been turning the OD off every time I drove it with the 285 tires. As an aside, years ago I had a True-Trac installed in the rear, and planned on having one installed in the front when I did the gear change.
The engine is all stock except for a programmer http://www.hemifevertuning.com/Dodge...p_ECM_s/33.htm
. Truck has a 2" lift (Skyjacker 2" coils up front and Trail Master R1530 2" long leaf add-a-leafs in the rear).
Well tonight I drove it home from the shop with the new 4.10 gears (and True-Trac up front). What a difference! Now I can step on the gas while in overdrive and it actually responds. It always seemed like it had a pretty steep overdrive, so I'm glad I went with the 4.10 gears. It's still just a little over 2000 RPMs even at above highway posted limits.
My wife following me home from the shop said her car said 70 mph but my truck was saying 80. So I'll be contacting these guys http://www.transmissioncenter.net/sp...n_______va.htm
to get the correct tooth count speedo gear to correct for the tire size and gear ratio.
Anybody out there need a front and rear 3.55 Ring and pinion set and carrier for the front diff? Heck; I've still got the rear carrier somewhere in the garage (in a sealed box) if anybody wants them. Too heavy to ship, but if you're near Clarksville TN I'll give them to you for free if you come pick them up.