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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^^What Chris said!
I swapped my 3.55's to 4.10's but the truck does nothing but tow now and the speed limit is 55MPH. Now I'm right at 2000 RPMs at 65MPH. I also do a lot of towing on winding mountain roads. I killed a couple stock 47re's because I was in second or sometimes first where the converter doesn't lock up so I heated them up pretty good.
I've done a lot to the truck (built trans, injectors, programmer, exhaust brake) and it's a real towing machine now (and paid off for almost 10 years).
If your truck is still a daily driver and/or you don't go up steep winding mountain roads (15-20 MPH turns) you probably don't need the 4.10's. Just be careful if you have to get down into first or second because the TC doesn't lock on a stock trans and it'll heat up really fast.
Personally, they were a great choice for me.
I swapped my 3.55's to 4.10's but the truck does nothing but tow now and the speed limit is 55MPH. Now I'm right at 2000 RPMs at 65MPH. I also do a lot of towing on winding mountain roads. I killed a couple stock 47re's because I was in second or sometimes first where the converter doesn't lock up so I heated them up pretty good.
I've done a lot to the truck (built trans, injectors, programmer, exhaust brake) and it's a real towing machine now (and paid off for almost 10 years).
If your truck is still a daily driver and/or you don't go up steep winding mountain roads (15-20 MPH turns) you probably don't need the 4.10's. Just be careful if you have to get down into first or second because the TC doesn't lock on a stock trans and it'll heat up really fast.
Personally, they were a great choice for me.
