Max speed in 4x4 High?
Postmaster
Joined: Jun 2006
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From: Kzoo
well i did post the same question and got a lot of responses but i cannot find that thread but everyone that replied basically said that there isnt a max speed, i always thought you should never go above 50mph but other people replied and said they go higher then 70, someone brought up a good point that if you need 4x4 then you shouldn't need to know the max speed because you shouldn't be going that fast or something..i dunno.
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From: Honkytonkville
technically speed shouldn't be an object- I would worry more about how well you're grabbing...On dry, paved road i wouldn't go 5 mph in 4H. As long as there is some give in the traction I wouldn't worry too much. I've had wheel speeds(not vehicle speeds 
) well above 80 MPH in my mud trucks in 4H, never any issues from the speed.
) well above 80 MPH in my mud trucks in 4H, never any issues from the speed.
Senior User
Joined: Mar 2006
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From: In The Past
Originally Posted by 4wdriver
im sure robbie gordan drives the baja in 4x4 high at over 50 mph.4wd isnt just for ice and snow.i would love to rip down some desert road in 4wd no such luck in the n.east.
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Joined: Jan 2007
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From: Northeast Wisconsin
I thought i remembered reading somewhere sometime that as stated above, as long as it is not on dry pavement or a hard surface you should be fine, although i myself wonder why speeds that high are needed. But on dry pavement and hard surfaces they say you can cause binding in the transfer case by doing this.
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Joined: Nov 2006
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I dont know how long it would take to start wearing out front end parts, but if someone made a habit out of driving 60+ mph in 4wd, I am sure the parts are going to go out much faster than they would if they did not. Kind of like driving with your engine constantly between 3500-4500 RPMs. Yeah you can do it without blowing it up, atleast for a while, but it cant be good for it if it continues.
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Senior User
Joined: May 2004
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From: B'ville, WV
Originally Posted by esaycho
I don't think there is a top speed. the manual only says to engage make a shift into 4hi or 2 at 55 mph or less, that's with the Electric transfer case, and the manual shift transfer case
I was just wondering what speed a person could run, in 4wd High, on a 45 mile snow covered interstate commute and not harm the truck.
Thanks, everyone.
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From: Honkytonkville
I don't think question was "how fast can you drive in poor conditions." he didn't say he was gonna go 100 on snow packed roads, he wanted to know if it would hurt his truck if he did- a hypothetical q.
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Joined: Sep 2005
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From: Saskatoon, Saskatchewan
Have done 110 km/hr (68 mph) in 4X4 HI with no ill effects. Was on a snow/ice covered highway that was slippery in sections. No bare pavement. I switched it off and felt some uneasiness when it started to wander a bit so I slowed back down to a much lower speed and reengaged 4X4 and went back to highway speed and it held straight as an arrow. No issues whatsoever. I agree with the "higher wear" comment. Had a meeting to get to, didn't have time to crawl along. And felt perfectly safe I might add.