Gear ratio changes

[Ozymandias]

No they don't.

 

[SnoKing]

I ran a Banks EB for 11 years on my 2001.5, only because my step son was a dealer at the time and got me a good deal on it. I had to clean the vacuum solenoid once in a while, and towards the end replace the butterfly shaft and bushings. With the DTT smart controller, built transmission and slightly bombed motor in tow a 12K+ 5th wheel all over the West Coast.

 

[SnoKing]

Hi, we had our transmission rebuilt by Inglewood transmission in Fullerton CA. They found that the converter clutch was burnt, the front pump was damaged, second gear band was burnt and several other components. They replaced all the components with upgraded Goerend billet input shaft Goerend clutches and bands and a Goerend converter. Picked up the truck and the shift quality is nice, I am looking forward to our next RV trip. Thanks again for your input Gil

Did they tell you what axle ratio the truck has?

 

[SAndreasen]

I have a question about rear differential gear ratios. I have a 2001 Dodge 2500 with a 24 valve Cummins engine and 47RE transmission. I tow a 12000 lb fifth wheel trailer. Our truck has 90000 miles on it mainly towing. I had the rear differential gears changed from 3:73 to 4:56 gear ratio for better grade climbing. Our truck is stock with stock size tires and it’s a 2 wheel drive model. I have been told that the low gear ratio is not good for the transmission or the engine, I do keep rpm’s below 2000 rpm when possible, sometime on heavy grades I need to down shift to lower gear and rpm’s go above 2500 rpm’s. The transmission is having some issues and the transmission shop recommended that I go back to the stock gear set. Any information would greatly appreciate. Thanks Gil

I don’t know anything other than when I went to duallys I don’t have near the transmission problems I had when running single wheel trucks . I have one with 3.54 manual transmission and one with 4.10 automatic transmission both are 235/85 rear and 265/75 steer tires both are 4wd I also never tow loaded in od in either transmission and that probably helps more than anything I guess . I know on the single wheel trucks with 285 tires I was constantly having transmission issues like every 40,000 miles or less one was needing an fifth gear or bad synchros or a chipped gear tooth and sometimes just completely exploded the whole thing . Simple equation when rpm goes up torque goes down .