Okie Dokie.....
all time 4 wheel drive. Lets clarify
It's "full time 4 wheel drive"
In 4 high mode the drive train is split 40% front, 60% rear.
In 4 high lock the drive train is split 50-50
In 4 Low lock, again 50-50
When you are in 4 low, (as I was going up the golden stairs
) trying to crawl an uphill obstacle, brake throttle modulation, I was at about 22-2500 rpms before the truck would even move. Thanks to the 4:1 transfer case and the 4.56's.
You are correct in saying that this is done at slow speeds. It is housing flex that causes the failure. However, prop shafts and diveshafts along with carrier brackets have failed as well.
Now a question for you.....do you or are you in possession of a 4WD dyno??
This could be cool
