Driving in 4 wheel high - Ford Bronco Forum
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post #1 of 73 (permalink) Old 12-10-2009, 08:07 PM Thread Starter
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Driving in 4 wheel high

Not sure,but I was told that on the older 4X4 I could not drive at road speed for extended periods of time. I dont have the original owners manual and I dont know. Is this true? I have a 79 XLT with C6 Np 205.
The reason I ask is if there is a snow storm such as today,and I drive to work in 4 wheel high will I do any damage to anything?
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post #2 of 73 (permalink) Old 12-10-2009, 08:11 PM
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I drove all last winter with a few inches of snow on the freeway in 4hi at 50-55mph 30 miles twice a day for a few weekends.

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post #3 of 73 (permalink) Old 12-10-2009, 08:19 PM
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If the road is dry take it out of 4wd. You can drive as fast as you want in 4 hi.
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post #4 of 73 (permalink) Old 12-10-2009, 09:26 PM
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Originally Posted by Ranger429 View Post
If the road is dry take it out of 4wd. You can drive as fast as you want in 4 hi.
yes, if its dry than always have the t-case in 2hi. IIRC you can keep the hubs locked if you feel safer that way.

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post #5 of 73 (permalink) Old 12-10-2009, 09:36 PM
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Originally Posted by spikedzombies View Post
yes, if its dry than always have the t-case in neutral. IIRC you can keep the hubs locked if you feel safer that way.
how will the truck drive then??

The reason is there are slight differences in ring and pinion ratios front and rear, without being able to slip a little, it puts stress on your drivetrain.
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post #6 of 73 (permalink) Old 12-10-2009, 09:40 PM
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yes, if its dry than always have the t-case in neutral. IIRC you can keep the hubs locked if you feel safer that way.
how fast you go in Neutral? Gas millage good or bad?

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post #7 of 73 (permalink) Old 12-10-2009, 09:46 PM
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how will the truck drive then??

The reason is there are slight differences in ring and pinion ratios front and rear, without being able to slip a little, it puts stress on your drivetrain.
really? didnt know that, guess ill keep them unlocked if I know im not going to be driving in the snow. I always kept them locked during the snow storms cause I could stop, pop the tcase into neutral and than go on driving in 2wd on the plowed roads. Than if i was to go through some side roads or whatnot I could just put it back into 4wd without getting out.

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how fast you go in Neutral? Gas millage good or bad?
ive gone stupid yet again...

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post #8 of 73 (permalink) Old 12-10-2009, 10:31 PM
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Originally Posted by spikedzombies View Post
really? didnt know that, guess ill keep them unlocked if I know im not going to be driving in the snow. I always kept them locked during the snow storms cause I could stop, pop the tcase into neutral and than go on driving in 2wd on the plowed roads. Than if i was to go through some side roads or whatnot I could just put it back into 4wd without getting out.



im trying to decide if thats sarcasm or not... unless i screwed something up again.. hubs locked, neutral tcase, in drive.. yeah that sounds right for what I was doing most of last winter, but I have a crappy memory anyways.
neutral? are you serious that you drive around in neutral?

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post #9 of 73 (permalink) Old 12-10-2009, 10:42 PM
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neutral? are you serious that you drive around in neutral?
yeah I think i meant 2hi not neutral.. had to think about that extra long and hard seems like I cant go a few days without a stupid comment or something of the sort.

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post #10 of 73 (permalink) Old 12-10-2009, 11:00 PM
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since its just starting to snow here i have been driving in 2Hi with the hubs lock for about the past two weeks. I locked them in to go mudding and havent taken them out,this time of year it dont matter if you leave them in cuz of the snow here and there. You just dont wanna go offroading in the summer and drive around all year with them lookced in. It dont matter how fast you drive either.
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post #11 of 73 (permalink) Old 12-10-2009, 11:05 PM
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You could of locked the hubs in back in 79 and drove the truck forever like that, won't hurt anything. Don't leave the T-case in 4wd on dry ground and your fine.
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post #12 of 73 (permalink) Old 12-10-2009, 11:26 PM
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Hey not to high-jack any ones thread but since we're on the topic of 4wd and the snow's beginning to be more prevalent... I went to pull the 205 shifter back into 4hi from 2wd while in gear doing about 20mph and it began to chatter and grind so I immediately let off, but aren't you supposed to be able put it into 4hi while driving? or am I wrong?

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post #13 of 73 (permalink) Old 12-10-2009, 11:28 PM
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if your hubs were not locked you cannot shift from 2h to 4h.

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post #14 of 73 (permalink) Old 12-10-2009, 11:32 PM
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Originally Posted by jopes View Post
if your hubs were not locked you cannot shift from 2h to 4h.
ah si senior.... gracias

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post #15 of 73 (permalink) Old 12-11-2009, 02:07 AM
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Hubs stay locked all winter, t-case in 2hi when dry, then when I need 4x4, yank the lever back and good to go.

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post #16 of 73 (permalink) Old 12-11-2009, 04:16 PM Thread Starter
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Thanks guys, I was told this by a Dodge driver,something about the front end loading up. Glad to here I can leave the hubs locked,and just go between 2 and 4 wheel hi.
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post #17 of 73 (permalink) Old 12-11-2009, 04:19 PM Thread Starter
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post #18 of 73 (permalink) Old 12-11-2009, 05:17 PM
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Quote:
Originally Posted by bstang71 View Post
Thanks guys, I was told this by a Dodge driver,something about the front end loading up. Glad to here I can leave the hubs locked,and just go between 2 and 4 wheel hi.

And if I do you can have it, if I don't you can give me a call and I'll read you over the phone what it says word for word.

Private message me if you're interested.

Happy to hear you got the Bronco on the road.

Cheers,
Rick.

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post #19 of 73 (permalink) Old 12-11-2009, 10:14 PM
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I'm pretty sure the issue is not a difference in ring and pinion ratios; this is determined by the ratio between the number of teeth on the ring gear compared to the pinion. If you have 35 ring gear teeth and 10 pinion teeth you have a 3.5 to 1 ratio no matter how the gears are shaped or what they are in.

It's the slight differences in tire sizes (caused by wear and/or manufacturing differences) that cause part time vehicles that have no center differential to bind.
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post #20 of 73 (permalink) Old 12-13-2009, 02:50 AM
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Originally Posted by Ranger429 View Post
You could of locked the hubs in back in 79 and drove the truck forever like that, won't hurt anything. Don't leave the T-case in 4wd on dry ground and your fine.
Well not exactly correct....if you leave the hubs locked in all year you will chew up your front tires eventually. Takes along time, but they wear bad on the edges of the tires. I know your thinking my alignment was off....not true. My alignment was perfect and I had a shop double check my alignment after having to put new tires on it.

I did notice a difference in turning with the hubs locked in on dry pavement. When you turn sharp with the hubs locked in, but not in 4 wheel drive, it wants to push instead of turn, which is what eats up the tires. Just something to consider when deciding whether to unlock the hubs or leave them locked all year around driving on dry pavement.
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