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09-01-2017, 07:14 PM
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#1 |
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Senior Member
  
Join Date: Oct 2015
Location: Brownsburg, IN
Posts: 1,103
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Front drive shaft only
I'm restoring a 71 K1500. Truck is real close to being able to drive under it's own power. Would it harm the transfer case to drive the truck up onto a trailer with the transfer case in 4hi with only the front drive shaft in place? I'm thinking it would be OK, but kind of question if there might be a reaction to no load on the rear yoke. Any suggestions or info would be appreciated.
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1972 Blazer Highlander 1971 GMC K1500 SWB (sold) 2004 Corvette Z06 CE |
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09-01-2017, 07:35 PM
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#2 |
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Senior Member
Join Date: May 2012
Location: Scottsdale, AZ
Posts: 1,907
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Re: Front drive shaft only
Will be fine. You can buy or make a twin stick setup for your transfer so you can have front wheel drive, not recommended for dry pavement.
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White K20 |
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09-01-2017, 08:14 PM
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#3 |
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20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,722
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Re: Front drive shaft only
Yeah, you're good. Years ago at work we blew out the rear driveline on an F350. Drove it back to the yard several miles on secondary roads in 4Hi. No problem.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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09-01-2017, 08:31 PM
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#4 |
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Post Whore
 
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: Front drive shaft only
way back in the day I lost a rear u-joint in my 72 blazer...screwed the yoke up..drive it a couple weeks on front driveshaft while waiting on a replacement....won't be a problem
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09-01-2017, 09:32 PM
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#5 |
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Registered User
Join Date: Jun 2013
Location: Somewhere
Posts: 3,123
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Re: Front drive shaft only
Running on dry pavement is only an issue when 4 wheels are driving in a true 4x4 system. This refers to post #2.
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09-01-2017, 10:08 PM
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#6 |
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Registered User
Join Date: Feb 2007
Location: Star Valley, WY
Posts: 2,038
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Re: Front drive shaft only
yep, drove 3 hours to home once on only the front pulling my rzr and 6x10 trailer.
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Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's |
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09-03-2017, 06:45 AM
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#7 |
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Special Order
 
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
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Re: Front drive shaft only
It's called front wheel drive. I've had to run a while that way before. Can't do it with the later transfer cases, but these are no problem
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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09-03-2017, 11:20 AM
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#8 |
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Senior Member
Join Date: Oct 2015
Location: Brownsburg, IN
Posts: 1,103
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Re: Front drive shaft only
I was just concerned that the transfer case may have been designed to always carry a load on the rear yoke and that no load on rear might cause some internal damage to case.
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1972 Blazer Highlander 1971 GMC K1500 SWB (sold) 2004 Corvette Z06 CE |
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09-03-2017, 01:39 PM
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#9 |
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Registered User
Join Date: Oct 2009
Location: .
Posts: 2,187
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Re: Front drive shaft only
If your transfer case has a fixed rear yoke, you will be fine. If it has a slip yoke, you will have problems.
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09-03-2017, 05:28 PM
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#10 | |
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Registered User
Join Date: Jan 2017
Location: wheaton IL
Posts: 659
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Re: Front drive shaft only
Quote:
i drove home like 6 blocks with only a front driveshaft and the rear shaft removed on one with a slip yolk on a 83 s10 blazer, it just left a small trail the whole way but didnt hurt anything |
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09-04-2017, 07:01 AM
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#11 |
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Registered User
Join Date: Oct 2009
Location: .
Posts: 2,187
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Re: Front drive shaft only
It's not just for fluid. The slip yoke supports the rear half of the output shaft. With nothing to support it, it can rock around and damage itself, other parts in the case, the bushing that supports the slip yoke, the seal(not a real biggie) and the case itself.
You got lucky |
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09-04-2017, 06:54 PM
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#12 |
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Senior Member
Join Date: Oct 2015
Location: Brownsburg, IN
Posts: 1,103
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Re: Front drive shaft only
Transfer case is a NP205 with a fixed rear yoke.
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1972 Blazer Highlander 1971 GMC K1500 SWB (sold) 2004 Corvette Z06 CE |
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