3:55 or 4:10

NJRVer wrote:

Chuck_thehammer wrote:
I do wish Eaton made a 2 speed rear end for pickup trucks..

I used to drive a White with a 5 speed transmission and a 2 speed rear end.
carrying 25,000 pounds of LEAD...almost daily

Wow, 25,000 pounds of LEAD?

Tougher than carrying 25,000 pounds of say, bird seed? :)

Lol! Post of the day!

Chuck_thehammer wrote:
I do wish Eaton made a 2 speed rear end for pickup trucks..

I used to drive a White with a 5 speed transmission and a 2 speed rear end.
carrying 25,000 pounds of LEAD...almost daily

Wow, 25,000 pounds of LEAD?

Tougher than carrying 25,000 pounds of say, bird seed? :)

Bedlam wrote:
I'm happy with 4.30's, but do not drive over 65 mph. Many people have to lock out top gear when towing with lower ratios - My truck is used exclusively for RV duty, so I am happy being able to make most of the drive in 6th gear and the worst hills in 4th.

My truck with 3.42's won't shift into 6th gear until 65 with the TH on. With 385 hp/ 900 lbft running in fifth is basicly like a truck with 4.10's running in sixth. 55 is the shift point from 4th to 5th.

I get it - That's why I did not choose the 4.88 gearing option. If I drove faster, I would have chosen the 4.10's over my 4.30 ratio. Since My truck is not driven empty, my setup works well for my conditions.

4x4ord wrote:
Towing even a very heavy holiday trailer down the highway at 65 mph only requires about 120 horsepower. What is the purpose of having your engine revving 2000 rpm in 6th gear where it is capable of delivering close to 300 hp to the rear wheels, Having a 3.73 gear ratio iinstead of a 4.30 would bring that rpm down to about 1735 which is still plenty high.....At 1735 the new Powerstroke is capable of delivering about 240 hp to the rear wheels. When I need more power than that I am happy to see the truck drop a gear or two where it can more directly and efficiently transfer the higher power to the rear wheels.

Someone gets it. Refreshing. :)

Towing even a very heavy holiday trailer down the highway at 65 mph only requires about 120 horsepower. What is the purpose of having your engine revving 2000 rpm in 6th gear where it is capable of delivering close to 300 hp to the rear wheels, Having a 3.73 gear ratio iinstead of a 4.30 would bring that rpm down to about 1735 which is still plenty high.....At 1735 the new Powerstroke is capable of delivering about 240 hp to the rear wheels. When I need more power than that I am happy to see the truck drop a gear or two where it can more directly and efficiently transfer the higher power to the rear wheels.

ROBERTSUNRUS wrote:

Chuck_thehammer wrote:
I do wish Eaton made a 2 speed rear end for pickup trucks..

I used to drive a White with a 5 speed transmission and a 2 speed rear end.
carrying 25,000 pounds of LEAD...almost daily

:) Hi, and how is this going to work with a 4 X 4? Not!

You only operate the rear axle in high when in 2wd. Lockout switch keeps from accidentally engaging 4wd when the rear is in high.

I've towed with 3.55 gears and converted the truck to 4.10 and liked it much better. That was an older truck with only a 4 speed auto.

With a modern 6 speed (or higher) transmission- I'm not sure I'd worry too much as there will always be the right gear. My current truck has 3.73s and they are great.

Chuck_thehammer wrote:
I do wish Eaton made a 2 speed rear end for pickup trucks..

I used to drive a White with a 5 speed transmission and a 2 speed rear end.
carrying 25,000 pounds of LEAD...almost daily

:) Hi, and how is this going to work with a 4 X 4? Not!

The Gear Vendors is an overdrive unit, with a direct 1:1 low gear and a 20 percent overdrive high gear (0.8:1). To use it as an underdrive, one would need to pick a very low (numerically high) axle ratio, like 4.30, and then run the Gear Vendors in High when empty, for an effective axle ratio of 3.44.