Whilst I can't say with certainty as I've not read through the book yet, I do believe it was 80km/h or 50-55 mph.

When I get the chance I will look it up in my booklet to confirm.

 

There is nothing in the manual about maximum speed in 4 wheel lock. The only thing about speed is for 4 wheel low.

4WD LOCK​

Four-Wheel Drive Lock Range - This range locks the front
and rear driveshafts together forcing the front and rear
wheels to rotate at the same speed. This range provides​

additional traction for loose, slippery road surfaces only

4WD LOW​

Four-Wheel Drive Low Range - This range provides low
speed four-wheel drive. It locks the front and rear
driveshafts together forcing the front and rear wheels to
rotate at the same speed. This range provides additional
traction and maximum pulling power for loose, slippery​

road surfaces only. Do not exceed 25 mph (40 km/h).

 

its not recommended to use 4wd lock on dry pavement. its more of a "sticky situation" thing.

 

Last week, I found out I was driving around in 4-Lock for 2-3 days (as best I could remember). Earlier in the week, I put it in 4-Lock, for some icy/snowy back roads. I thought I put it back into auto (not realizing, you really need to hold the button for a few seconds).

In the end I didn't really worry about it too much.

 

it will go 80 in 4 low

trust me, but the comp wont let it go any faster

 

Do not worry about it; I took my 2013 outdoorsman down the track in 4high! Take of the anti-slip rear end and let her go. That 2013 differential is not the same as they use to be boys Ram has come a long way. That Hemi with nothing but a cold air intake will hit 100 mph in the quarter mile. But do not take my word for it. Just stop letting your truck drive you and have a little fun driving it.




but that is just my thought

 

4 wheel drive High and 4 wheel drive Lock are two different things.

4 lock on the transfer case is to lock the output drive shafts together and eliminate the differential in the transfer case of full time 4WD systems. It doesn't have anything to do with the axle shafts locking together. You don't want to use it on high traction surfaces because of the potential for drive line bind that could result in damage to the transfer case, ie Dry paved Roads. Setting the case in the 4 lock locks the front and rear outputs together much like your air lockers.

For variable driving conditions, the 4WD AUTO mode
can be used. In this mode, the front axle is engaged, but
the vehicle’s power is sent to the rear wheels. Four-wheel
drive will be automatically engaged when the vehicle
senses a loss of traction. Because the front axle is engaged,
this mode will result in lower fuel economy than
the 2WD mode. When additional traction is required, the transfer case
4WD LOCK and 4WD LOW positions can be used to lock
the front and rear driveshafts together forcing the front
and rear wheels to rotate at the same speed. This is
accomplished by rotating the 4WD Control Switch to the
desired position. Refer to “Shifting Procedure” for specific
shifting instructions. The 4WD LOCK and 4WD
LOW positions are designed for loose, slippery road
surfaces only. Driving in the 4WD LOCK and 4WD LOW
positions on dry hard surfaced roads may cause increased
tire wear and damage to the driveline components.

 

Asur nailed it.

 

Ok so my question is If (hypothetically) I were to race some one at a stop light. (not that I would) and I put my truck in 4 Wheel High to get traction let her spool up and when the light turns green let her go can I drive her like that for traction purposes to not spin the tires ? and beat the hell out of the other car or truck.
And how fast can I go ? in 4 wheel high
(If I were to do that, again not that I would) but to avoid spinning the tires.

 

Only Manual transfer cases have Four-Wheel drive High, other transfer cases have four-wheel drive Lock and four-wheel drive low, and others (higher end models) have four-wheel drive auto, four-wheel drive Lock and four-wheel drive low.

Four-Wheel Drive High Range - This range locks the
front and rear driveshafts together forcing the front and
rear wheels to rotate at the same speed. Additional
traction for loose, slippery road surfaces only.

If you have four-wheel drive Lock its essentially the same as four-wheel drive high, don't use it on dry pavement.

 

Do all the 2013 RAM trucks have the same 4x4 systems?

 

Nope...mine doesn't even have AUTO mode...only lock and low


on a side note: anybody know the max speed that you can put it into 4WD LOCK?

 

I race against Cummins Rams that run in 4WD Hi range. Thats the only way they can hook with street tires. In the eighth mile we're typically running at mid 70's mph, quarter mile, just under 100. As long as you're going in a straight line, 4WD is ok, if you turn, it can actually be dangerous. Sometimes driving in snow, my truck will kick the rear end sideways in 4WD. If you drag race in 4WD, you can possibly stretch the drive chain in the transfer case. I use my truck to skid out heavy logs in 4LO and have had to replace the chain. It's pretty easy to replace. I skid logs with 2-3,000 lbs in the bed and it will pull hard enough to break 15,000 lb dacron tow rope.

 

sorry, thats for 4wd low