2013 Ram Rear Axle Ratio

4x4ord wrote:

Huntindog wrote:
All of the big three have some form of TQ management in at least one gear.
I'm pretty sure that the Dmax is only in first gear. I'm pretty sure that the pre 2013 Rams were in gears 1-3. Not sure if that changed for MY 2013. I can't recall what ford does, but I know they have it.

Since they all use similarly rated axles, they all have to have some form of it to keep parts from breaking.

Nobody can say for certain just how much power that TQ management takes away. So the comparisons are impossible/meaningless.

I would be interest in the math at highway speeds. This is what will keep the load moving up the hill with/without downshifting and/or how much it does.
TQ management is not in effect at these speeds, so the math will be accurate

Even though the torque out put may be limited in the new trucks it is still extreme what they are capable of. I use these trucks for very heavy loads and at times in very soft ground. I have witnessed an 03 Duramax moan and groan until it finally spins out trying to move one of my trailers in soft ground. At that point I hooked the new Ford onto the same trailer and placed the transfer case in four low and the transmission into drive. The result was unbelievable. Removing my foot from the brake and very lightly touching the throttle was all that was required to move that 32,000 lb trailer through the soft ground.

You bring up a good point. Since I know that the Dmax has had TQ management since 2001...It is possible that the 4x4s could be programed a little more aggressively since some of the power is going to the front axle. I doubt that was the case in the early Dmaxes as it was in it's infancy. And it may or may not be so today...But computers have come a long way since then, so it is likely.

Huntindog wrote:
All of the big three have some form of TQ management in at least one gear.
I'm pretty sure that the Dmax is only in first gear. I'm pretty sure that the pre 2013 Rams were in gears 1-3. Not sure if that changed for MY 2013. I can't recall what ford does, but I know they have it.

Since they all use similarly rated axles, they all have to have some form of it to keep parts from breaking.

Nobody can say for certain just how much power that TQ management takes away. So the comparisons are impossible/meaningless.

I would be interest in the math at highway speeds. This is what will keep the load moving up the hill with/without downshifting and/or how much it does.
TQ management is not in effect at these speeds, so the math will be accurate

Even though the torque out put may be limited in the new trucks it is still extreme what they are capable of. I use these trucks for very heavy loads and at times in very soft ground. I have witnessed an 03 Duramax moan and groan until it finally spins out trying to move one of my trailers in soft ground. At that point I hooked the new Ford onto the same trailer and placed the transfer case in four low and the transmission into drive. The result was unbelievable. Removing my foot from the brake and very lightly touching the throttle was all that was required to move that 32,000 lb trailer through the soft ground.

All of the big three have some form of TQ management in at least one gear.
I'm pretty sure that the Dmax is only in first gear. I'm pretty sure that the pre 2013 Rams were in gears 1-3. Not sure if that changed for MY 2013. I can't recall what ford does, but I know they have it.

Since they all use similarly rated axles, they all have to have some form of it to keep parts from breaking.

Nobody can say for certain just how much power that TQ management takes away. So the comparisons are impossible/meaningless.

I would be interest in the math at highway speeds. This is what will keep the load moving up the hill with/without downshifting and/or how much it does.
TQ management is not in effect at these speeds, so the math will be accurate

4x4ord wrote:

Cummins12V98 wrote:

4x4ord wrote:
Think of it this way:

In 2004 the Cummins with a 4.10 rear axle was capable of 5575 lb ft of torque to the rear axle in low gear.

The new Ram with a 3.42 rear axle is capable of putting 10,872 lb ft of torque to the rear axle in low gear. Almost double!

Thanks for that info. But with torque management I am sure it is much less in reality.

I don't know anything about this torque management you mention but my guess is that in four low these trucks put even more than 11,000 lb ft of torque on the rear axle. My guess is based on how the truck performs under severe conditions.

They actually control how much torque is allowed in the lower gears so the drivetrain will last.

Cummins12V98 wrote:

4x4ord wrote:
Think of it this way:

In 2004 the Cummins with a 4.10 rear axle was capable of 5575 lb ft of torque to the rear axle in low gear.

The new Ram with a 3.42 rear axle is capable of putting 10,872 lb ft of torque to the rear axle in low gear. Almost double!

Thanks for that info. But with torque management I am sure it is much less in reality.

I don't know anything about this torque management you mention but my guess is that in four low these trucks put even more than 11,000 lb ft of torque on the rear axle. My guess is based on how the truck performs under severe conditions.

4x4ord wrote:
Think of it this way:

In 2004 the Cummins with a 4.10 rear axle was capable of 5575 lb ft of torque to the rear axle in low gear.

The new Ram with a 3.42 rear axle is capable of putting 10,872 lb ft of torque to the rear axle in low gear. Almost double!

Thanks for that info. But with torque management I am sure it is much less in reality.

4x4ord wrote:
Think of it this way:

In 2004 the Cummins with a 4.10 rear axle was capable of 5575 lb ft of torque to the rear axle in low gear.

The new Ram with a 3.42 rear axle is capable of putting 10,872 lb ft of torque to the rear axle in low gear. Almost double!

Twice the $$$$ too :B

Think of it this way:

In 2004 the Cummins with a 4.10 rear axle was capable of 5575 lb ft of torque to the rear axle in low gear.

The new Ram with a 3.42 rear axle is capable of putting 10,872 lb ft of torque to the rear axle in low gear. Almost double!

I could be wrong but I think all single rear wheel trucks are 3:42.

I can tell you My 11 HO Dually with 28K combined tows great with 3:42.

1oldtruck wrote:
The 2500 was just over 60k and the 3500 was just under 60k. The 3500 had a package savings not offered on the 2500.

No brainier there then unless you just like the digit 2 better than 3 :B