2nd Gen Non-Engine/Transmission &th gear for 4:11 folks when empty

[JBlock]

THe Trailer Towing difference is 2000 pound

Trailer Towing difference is 2000 pound on automatic (Dana 70), on a 2001 CTD 2500 4x4 the differnce in towing capacity is 2000 pounds 9xxx, verse 11,xxx for 3. 54 verse 4. 10 in Dana 70. I thought 3. 73 would be nice but based on the Dana 70 in the automatic you gain a 1,000 pound.



The real jump is to go with dana 80 like the six and five speed to get towing capacity. :-{}

 

[John Berger]

Originally posted by BigDan

The only reason I would use the GV unit would be the higher top speeds... . P. S just for fun



If I had 3. 54's gears GV unit 315's A/T my top speed would be 168mph. :--)



I might need an extra push out of the mighty cummins though, like some injectors and a turbo

You probably would have sat on the pole at Darlington last week. Oo. :-laf

 

[340Mark]

Dremelts mentioned backing up with a under drive unit. That sounds great,I have to back my car trailer up a hill and around some trees. do any of you 4x4 guys use low range in reverse?

 

[RustyJC]

Originally posted by Dkevdog

When you talk about towing a heavy trailer, how heavy?? If I remember correctly, the difference in GCVW rating between identically equipped trucks with the 3:54 to 4:10 is only 500lbs. Not enough for me to make a difference.

Kev,



For my truck (see signature):



3. 54 GCWR - 20,000 lbs



4. 10 GCWR - 21,500 lbs



1500 lbs difference in GCWR.



Towing our 13,500 lb 5ver, we're running 21,180 GCW (21,500 GCWR) and 10,380 GVW (10,500 GVWR).



Rusty

 

[geusterman]

Just going to jump in here--I have a GV in my 2002 4x4 just for the sweetness of it. I sold two rigs when I bought my truck and used cash from one of them to sweeten my truck up to where I could stand driving it. (Sold two chevies ) I cruise at 70 at 1500 rpms with 3:55's and 19. 5x245 Michelins. Raced a Mustang on the freeway the other day out in middle of nowhere and he had nothing on me. Very long legged but I like it. Still pushing the full time front end which is irritating as I would have hubs in a hot minute but none made for truck. Has nothing to do with payback except driving enjoyment as I will keep the truck for a loooonnnnggg time. Just got a 98 Jetta TDI for squirting around at good mpg. GEusterman



PS, it pulls 10K in 7th like it was not there (also Edge EZ).

 

[Dkevdog]

Originally posted by RustyJC

Kev,



For my truck (see signature):



3. 54 GCWR - 20,000 lbs



4. 10 GCWR - 21,500 lbs



1500 lbs difference in GCWR.



Towing our 13,500 lb 5ver, we're running 21,180 GCW (21,500 GCWR) and 10,380 GVW (10,500 GVWR).



Rusty

Thanks Rusty, I stand corrected, I was looking for where you had posted itbut couldn't find it. I did get the 500 part right though .



Kev

 

[rweis]

Have a question -



If you bought a truck that has 20k GVW because of the components of the parts ie 235hp 3. 54 auto and that it is legally setup for 20k as stated from Dodge.



Then you upgrade the engine, the differential to 4. 10, the brakes to ceramic pads with stronger rotors, you get the idea, a tougher truck. Are you still limited to the orgional 20k because that is what it was, or because of upgrades can it be more? and how would you figuer out what it would / could be?



Doesn't make sense to have to buy a new truck just to get a higher GVW or CGVW when you have essentially the same truck through upgrades. But how the heck would you prove it?



A good example is the 48RE. In the 2003 Dodge literature they have the GVW CGVW and footnote that it is with the new 48RE. You will be able to upgrade your 47RE to a 48RE from what I am hearing, or the upgrades at XXX transmission rebuilders are essentially the same thing.



Can you legally (and how would you prove it) carry more weight if you have done the upgrades?



Bob Weis

 

[RustyJC]

Originally posted by rweis

But how the heck would you prove it?

Bob,



And therein lies the problem. Nothing you do changes the sticker GVWR/GAWR's on the driver's door jamb or the GCWR on the window sticker.



We went through this when we bought our last 5ver (we went from a 30' single slide to a 36' triple slide). Suddenly we were way over the GCWR of our previous 1996 3500 V-10, and the truck really wasn't happy pulling the additional 2,600 lbs. So, we bit the bullet and ordered our 2002 (see signature in previous post) specifically equipped to get the 21,500 GCWR.



Rusty

 

[zjones]

That sounds great,I have to back my car trailer up a hill and around some trees. do any of you 4x4 guys use low range in reverse?

Yes, I've always used low range when backing loaded trailers. The trailers I pull weigh 20,000 to 26,000lbs which puts me at 28,000 to 35,000lbs CVW. So a 4. 10 diff ratio is a necessity for what I do. I've considered a over/under drive many times before I installed a 4000 GSK, but after this mod passing was no longer a problem nor was cruising at 75+ mph. My top speed with safe egt's is 105mph which is plenty for every day driving hence no need for more upkeep/possible failure. As far as mileage the best I've seen is 14mpg, lowest 10mpg, & average is 13mpg. Down time gets extremely expensive so adding the possibility of more was not an option on a work truck. Now for a play truck , I would have 3. 54's in anything that towed less than 10,000lbs so does an over/under drive help in this situation with mpg?? I doubt it but if it added to your top speed as a play truck it might be worth it.