one of my favorite vacation spots involves a severe grade a relentless atleast 10 percent with hairpin turns for around ten miles ( nine mile rd near pearson ville ca ) . in a new to me 2002 f350 towing 12k would i benifit from using 2 low in a taller gear to reduce load on the auto trans going up and increase engine braking going down .can the transfer case handle this load for an extented time ? what are opinions or experiences .
thanks

 

i would think your trans will thank you for using the low.
the t-case are strong and should handle it fine.

 

I often switch to 2 low when pulling a trailer up steep driveways, and when backing a trailer up even a slight grade, as the reverse gear seems pretty tall, at least on my truck. I have never gone ten miles though. The only downside that I have noticed is a harsher shift. I would not think that it would be too much strain on the transfer case, but I'm not an expert, quite the oppisite really.

Looking forward to hearing others input...

 

How do you guys select 2 Low? My truck only has 2 HI - 4 HI - 4 LOW

 

4 lo without locking the hubs..just a guess

 

I use 2 low all the time, not for 10 miles, but depending on speed I wouldn't see any issue, I have been in 4 Low for about 60 miles before on trails and scenic drives.

To Greg and Joey, just don't luck the hubs, and shift the transfer case, a nice luxury of having the manual transfer and hubs.

On one of my previous trucks, I had ESOF, and wired a bypass switch next to the ESOF to cut out the Pulse Vacuum Hub Solenoid to allow for the hubs to stay in "auto" disengaged and allow the transfer case to still shift into 4 low.

 

i have been looking to do something like that to have a low with out the hubs locking, do you have a write up on how to do this?

 

No but I could make one. Splice the power going to the PVHS, install switch, control the PVHS on and off with switch, just remember that it only cycles the vacuum for a few seconds.

LOL, I'll try to at least get the wire colors, although it wouldn't matter which one you used it would disable or enable the system.

 

I love having a real T case...

LOL

 

there the same thing just one has a small **** and one has a bigger ****.
dose it need to be a momentary or toggle switch.
i will have to look and see if i can find the color wires in the manuel

 

Well... Fact of point... er point of fact...

They are completely different T cases... LOL

But I understand where your going...

I have N... You do not. So that means I win...LOL

 

i though they where the same one just had a motor and the other a handle?
now i most know what make them different.

 

What do you have and Atlas t case?

 

so heavy load for extended peirods of time will not cause any problems ? or i should be ok dont know till i try it .

 

Factory is a NP 271 if its a manual or a NP273 if its electric shift.


I have the manual...