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08-08-2006, 09:48 PM
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Hummer Novice
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Join Date: Aug 2006
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Difference between 4High and 4High Lock
New H3 owner. I know this is probably a dumb question. If the H3 is full time all wheel drive, what is the difference between 4 High and 4 High Lock? I have a base model without the locking diff.
I also used 4 Low Lock the other day. The trans was pretty darn loud. Is that normal?
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08-08-2006, 09:56 PM
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Hummer Guru
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Re: Difference between 4High and 4High Lock
Anytime you want to do more than 25MPH, 4 hi lock. Under 25 MPH, 4 lo lock.
4 lo lock in 1st or 2nd gear. Very noisy.....normal.
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08-08-2006, 10:02 PM
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Hummer Novice
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Re: Difference between 4High and 4High Lock
Thank you for the reply. What about the difference between regular 4 High and 4 High Lock? Again I have a base model w/o the locking diff.
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08-08-2006, 10:15 PM
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Hummer Veteran
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Re: Difference between 4High and 4High Lock
4 hi power distributed approx 40/60 f/r open diffs 4 hi lock 50/50 center diff locked equal power all four wheels
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08-09-2006, 04:02 AM
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Re: Difference between 4High and 4High Lock
Quote:
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Originally Posted by Field Scout
4 hi power distributed approx 40/60 f/r open diffs 4 hi lock 50/50 center diff locked equal power all four wheels
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X2
i was gonna say that   
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08-08-2006, 10:25 PM
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Hummer Professional
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Re: Difference between 4High and 4High Lock
Quote:
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Originally Posted by lexunet
Thank you for the reply. What about the difference between regular 4 High and 4 High Lock? Again I have a base model w/o the locking diff.
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4 High Open - provides a constant 40%/60% front/rear torque split
4 High Lock - allows a 50%/50% split front/rear for more slippery surfaces |
08-08-2006, 10:31 PM
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Re: Difference between 4High and 4High Lock
Thanks. Good to know!
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08-08-2006, 10:40 PM
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Re: Difference between 4High and 4High Lock
Welcome lexunet!
Whereabouts in CA are you?
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08-11-2006, 05:37 AM
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Re: Difference between 4High and 4High Lock
Quote:
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Originally Posted by ChevyHighPerformance
4 High Lock - allows a 50%/50% split front/rear for more slippery surfaces
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Technically, there is no torque split when locked, because it is no longer a differential. For example, if the front encounters a slippery surface, torque will be transmitted to the rear up to 100%, and vice versa.
Michael. |
08-11-2006, 06:10 AM
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Re: Difference between 4High and 4High Lock
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10-03-2006, 07:31 PM
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Re: Difference between 4High and 4High Lock
Dirt Good. Detergent Bad!! 
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----Pretty Damn Loud!----- in Low LOCK! 
