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#1 |
Just need a couple more parts.
Join Date: Jan 2005
Location: Calgary, Alberta, Canada
Posts: 470
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Highway Driving in 4 wheel
I have been told the newer models allow highway driving in 4 wheel drive (if required) with no side effects other than reduced mileage. I have had to in our 2002 Trailblazer every now and then.
How about our 69-72 blazers? Same or what?
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--------------------------------------------------- 1947 Studebaker M5 project to match the camping trailer. 1950 Chev 4x4 Pickup 1958 Shasta Airflyte Travel trailer (fresh restoration) 1971 C/10 Pickup(Frame off Restoration) 1972 K5 Blazer CST (Daily Driver & My Company Truck) 1976 Honda CB750 Bobber 1988 Jaguar XJ12 Last edited by VinceY; 03-04-2006 at 12:09 PM. |
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#2 |
Registered User
Join Date: Apr 2004
Location: Willits Ca
Posts: 261
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Re: Highway Driving in 4 wheel
I don't run mine on just wet pavement or patchy snow, but if the road is covered No problem.
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#3 |
Mike
Join Date: Jan 2003
Location: west chester pa
Posts: 2,474
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Re: Highway Driving in 4 wheel
The road should be wet at the least for 4x4.
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70'c/10, 71 suburban4x4 402bb, 72suburban 4/6 drop, 72k/5 4x4 blazer 4" lift 35 tires |
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#4 |
Registered User
Join Date: Oct 2003
Location: Central Vermont
Posts: 8,538
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Re: Highway Driving in 4 wheel
I'll run the hubs locked in on the interstate for a short trip and just pull into 4x4 when needed.
Don't think I'd go 65mph in 4wd though, even with snow covered roads. |
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#5 |
PROJECT 7DEUCE
![]() Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,608
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Re: Highway Driving in 4 wheel
Dont try to run in 4wd with a locker in the front diff( I doubt the trail blazer has one)on dry or wet pavement
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GO BIG GREEN ![]() MEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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#6 |
The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,477
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Re: Highway Driving in 4 wheel
I have yet to use mine, but thanks for the tips
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Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T |
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#7 |
Account Suspended
Join Date: May 2005
Location: Where the Wild Things Are
Posts: 696
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Re: Highway Driving in 4 wheel
JEeps with selec trac t cases can like my girls 97 cherokee, there is a dif between the front and rear axle so even if the roads are only slick/raining etc you can shift into it w/e....When you go into 4 lo or 4hi the dif locks the axles together. thats like part time or something, then it also have 4hi , 4lo, and N. The blazers only have 2hi / 4hi/4lo and N .. so i wouldnt drive in either 4hi or lo unless as said the roads were covered in snow or mud heh.
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#8 |
Senior Member
Join Date: Jun 2001
Location: Shelbyville, KY
Posts: 3,269
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Re: Highway Driving in 4 wheel
Highway speeds and old 4x4's don't go hand in hand. Newer designs are capable but why would want to do that? You burn more gas, put strain on a bunch of expensive stuff that you don't need to, and quite honestly, a 4x4 running at speed has less driver control then running in 2x4. Only real advantage is braking by downshifting the transmission and even then you can get crazy things to happen---like a broken front axle universal that will probably kill you!!!
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#9 |
Check out GMTrucks.org
Join Date: Sep 2003
Location: Boise, Id
Posts: 284
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Re: Highway Driving in 4 wheel
The part time 4x4 in your blazer is not designed to run in a no slip situation. The road should at least be wet, or you are going to be tearing things up. Now, if you are running on a snow covered, gravel, or similar road, I think you could run in 4 high with no problem at any speed you can safely go. Remember 4x4 doesn't help you stop.
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#10 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: Highway Driving in 4 wheel
Road-use is fine in 4wd when it is needed.You don`t need it on wet roads,although the reduced traction would be easier on the drivetrain.Like VT Blazer.I just lock the hubs in when there is snow on the roads(the only time I can think I`d need 4wd).With the hubs locked-in,you have "shift-on-fly" between 2hi and 4hi.I use a "conserve drivetrain" approach and try to go as long as I can in 2wd.Remember,there is no harm in running all day long with the hubs in "lock".This is how the system was designed to work and "lock-out" hubs are an afterthought add-on.When the snow gets deep enough and the rear starts trying to push around under power(fish tail)because the fronts are meeting enough resistance,I pull thr lever.When the roads are mostly clear,I pull the lever when I see white on the road,mostly on curves or when it`s drifted.A thin white patch on a straight-away,I just let off the throttle and drift through.
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