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#1 |
Registered User
Join Date: Jun 2005
Location: Japan
Posts: 87
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Proper way to shift into 4 wheel drive??
This may sound a little ignorant, but what is the proper way to shift into 4 wheel drive? I have been told two different ways and that it doesn't really matter, but I want to know which way is correct. Also, what exactly is the neutral for on the transfer case?
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#2 |
No,I DON'T have Tourett's
Join Date: Mar 2005
Location: Reno, NV
Posts: 556
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Re: Proper way to shift into 4 wheel drive??
I always turn in the hubs and with trans in neutral, shift the tcase gently. Sometimes you have to go backward or forward a touch. If all else fails, you can turn the engine off. Tcase neutral leaves no drive component engaged. This is a preferred setting if your blazer is being towed, remembering the towing limitations for auto trans.
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'72 K5 CST 350/350 Daily Driver '69 GMC3500 Camper Special CST Flatbed 396/400 Upgraded to show truck '69 GMC 2500 L6292, 3spd beater |
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#3 |
Registered User
Join Date: Jun 2005
Location: Japan
Posts: 87
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Re: Proper way to shift into 4 wheel drive??
Thanks! This is what the dependable person told me. I never thought about towing--It's a Chevy...
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#4 |
Senior Member
![]() Join Date: Jan 2000
Location: LHC, AZ
Posts: 385
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Re: Proper way to shift into 4 wheel drive??
It depends on where you drive. If you expect to use 4wd on the trail or snow than I would lock in the hubs before getting stuck. I unfortunatly had to get out in about 4" of mud to lock in the hubs. Then put it in 4wd when needed. Try not to run with you hubs locked on the open road at high speeds
'
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70 Jimmy 4x4 71 GMC 2500 Too bad stupidity isn't painful |
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#5 |
Account Suspended
Join Date: May 2005
Location: Where the Wild Things Are
Posts: 696
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Re: Proper way to shift into 4 wheel drive??
what does turning the truck off do, help get into said 4x4 gear you're going for??? (hi/lo) if its being a pita ???
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#6 | |
No,I DON'T have Tourett's
Join Date: Mar 2005
Location: Reno, NV
Posts: 556
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Re: Proper way to shift into 4 wheel drive??
Quote:
Yep, I had a dodge 350 that I had to turn the engine off to shift the tcase.
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'72 K5 CST 350/350 Daily Driver '69 GMC3500 Camper Special CST Flatbed 396/400 Upgraded to show truck '69 GMC 2500 L6292, 3spd beater |
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#7 |
The Blazer King
Join Date: Sep 2000
Location: Valrico, Fl (Tampa)
Posts: 1,213
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Re: Proper way to shift into 4 wheel drive??
Some trucks will grind going into gear no matter what. Turning it off will eliminate the grinding. I always do mine while in nuetral as well.
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72 2wd Blazer. Its the superbichinest, megacoolinest, superflowinest. |
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#8 |
Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
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Re: Proper way to shift into 4 wheel drive??
With a part time t-case (Dana 20 or NP205) if the hubs are locked you should be able to shift between 2HI and 4Hi pretty much any time at any speed. It will not hurt anything to run at highway speed with the hubs locked. To shift between low and high range you should be in neutral, either stopped or rolling slowly. Many t-cases will shift into low range a lot easier if the truck is rolling rather than stopped. Like any tranny or gearbox, you want to shift positively and firmly between the gears. Don't try to "baby" it into gear. That will only make it grind.
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Tim |
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#9 |
The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,477
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Re: Proper way to shift into 4 wheel drive??
Since I have yet to use my 4WD this is very usefull info
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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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#10 |
Registered User
Join Date: Oct 2003
Location: Central Vermont
Posts: 8,538
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Re: Proper way to shift into 4 wheel drive??
For driving around my area in the winter when slippery roads, a hill or the driveway your about to go up, I leave the fronts hubs locked in all the time and when needed just reach down and pull it into 4-HI at speed.
Any long trips on the interstate mandates opening up the hubs though... Different trucks seem to like slightly different methods, you'll figure yours out soon enough. |
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#11 |
Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: Proper way to shift into 4 wheel drive??
wait.....you can shift into 4hi or 2hi at speed???? My truck is still new to me....its a 70, so I am pretty sure its a dana 20....but I thought I had to be stopped to shift the t-case into gear.....My hubs are full time (to be replaced soon) but with those, I can pull into or out of gear at will if the truck is in neutral? This would be awesome, there is always this upward slope on a hill that my truck always gets stuck in because I have to keep it in 2hi because after that there is no place to stop and shift into 2hi if I used 4hi.....well, thats rambling for ya....but investigation will be done this afternoon!!
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's ![]() 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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#12 |
Registered User
Join Date: Nov 2005
Location: WV
Posts: 227
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Re: Proper way to shift into 4 wheel drive??
Don't shift on the fly if it isn't a syncronized t case, other wise you could shift into 4 hi up to around 25 mph
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1993 K1500 350 5 speed ![]() 1985 K10 Silverado Vortec 406 5 speed (in body shop) "I been drivin' this '85 pickup truck Them buddies of mine call it a bucket of rust She's a little beat up but she still runs like the wind Yeah, kinda like me I been banged and bruisedBeen around the block a time or two But I'm runnin' like new goin' places I never been No, I ain't broke I'm just broken in" 1963 Dodge Townwagon(its amazng what 30 years and zero miles will do to a vehicle ![]() Member#20327 |
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#13 | |
Registered User
Join Date: Oct 2003
Location: Central Vermont
Posts: 8,538
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Re: Proper way to shift into 4 wheel drive??
Quote:
![]() Only between 2-hi and 4-hi remember. |
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#14 |
SKINNY TIRES RULE!
Join Date: Sep 2001
Location: Bothell, WA
Posts: 11,049
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Re: Proper way to shift into 4 wheel drive??
I've only put my pavement queen '72 in 4wd once (just to see if I could do it). It made a grinding noise so I shut it off to switch it. My '69 can make a grinding noise too (NP203 with a part time kit). I thought we were going to get some real snow this year and I'd have to put it in 4wd, but all the snow melted before the morning commute.
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bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L |
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#15 |
Active Member
Join Date: May 2005
Location: Hawaii
Posts: 153
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Re: Proper way to shift into 4 wheel drive??
My owners manual say's that you can shift into 4 Lo from any position(2hi,4hi,neutral) At 5mph or less and from 2hi to 4hi or 4hi to 2hi at any speed.
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#16 |
Registered User
Join Date: Dec 1999
Location: Northwest NJ
Posts: 746
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Re: Proper way to shift into 4 wheel drive??
What VTBlazer said.I go to work about 40 miles of interstate highway(55-60MPH) hubs locked no problem. I go into and out of 4wd high at any speed .The only problem is if you go into neutral in the transfercase it can be hard to get back into gear but no big deal.BTW my truck is a 67 K10 with a rockwell transfercase and 4 speed. Chris
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#17 |
'71 Chevy Blazer
Join Date: Jan 2005
Location: San Leandro, CA (near Oakland)
Posts: 96
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Re: Proper way to shift into 4 wheel drive??
question for you guys shifting from 2hi to 4hi while moving. which transfercases do you guys have? i am running a 205 and would like to know if i could do this also
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'71 K5 Blazer (new project / daily driver) "If you are not working to improve the situation, you have no business complaining" |
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#18 |
Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
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Re: Proper way to shift into 4 wheel drive??
Any part time case will be able to shift from 2hi to 4hi and back at any speed with no problems as long as the hubs are locked. Everything is moving at the same speed, so no synchros are requred in the transfer case.
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Tim |
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#19 |
Account Suspended
Join Date: May 2005
Location: Where the Wild Things Are
Posts: 696
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Re: Proper way to shift into 4 wheel drive??
Before i signed the papers , when i was buyying my blazer i had it in 4wd around my property and put it into N and couldnt get it out for 2-3min. Throught it was in 2hi, put it indo drive, gave it gas, went no place, got scared hahahah my 205 makes the noise on occasion too then falls into gear or does w/e its doing heh
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#20 | |
Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
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Re: Proper way to shift into 4 wheel drive??
Quote:
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Tim |
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