2000 Dodge Cummins with 3.55 gears
I have a new to me 2000 Dodge 5.9 Cummins 2 wheel drive with 3.55 gears. I have a 12,000 LB. loaded 5er. I went from a F-350 with 4.10 gears which was never a factor to what I have now. Will the 3.55 ...
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Towed a 10K fiver in the mountains with a stock 01.5, 2wd auto for ten years. Had 3:55's originally but switched it to 4:10's after towing in the hills for a year. With only one differential to change over, the expense is worth it. Towing under 1700 RPM isn't very good for the 47RE. Staying above 1700 will keep you in third most of the time if you have 3:55's. With 4:10's you will be able to use OD a lot more. 4:10's will also have you spending less time in 2nd gear on steep hills with the torque converter unlocked. Transmission temperatures increase rapidly under load with when unlocked and the lower gearing gives the transmission a greater mechanical advantage which also helps keep temperatures down when the torque converter is unlocked.
Unless you are planning on beefing up the tranny and adding some power, I would say go for 4:10's if you plan on towing in mountains and definitely get a transmission temperature gauge.
The independent front suspension 2wd's don't have the same steering issues as the solid axle 4wd's
Unless you are planning on beefing up the tranny and adding some power, I would say go for 4:10's if you plan on towing in mountains and definitely get a transmission temperature gauge.
The independent front suspension 2wd's don't have the same steering issues as the solid axle 4wd's
