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1979 chevy 4x4 stuck in watering hole

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Bhunt

05-14-2015 19:46:38




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My son got the 1979 350 chevy 1/2 ton 4x4 stuck in a cattle watering hole. The left side is on dry land the right is up to the axels. Only the right side wheels will turn both front hubs are in the locked position. I tried to pull him out with a 1993 ford dully it just spins the rear tires wont move it. Anyone know what rear end this would have had and why only the right front and rear side is spinning.

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ObsoElitist

05-19-2015 09:51:30




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to Bhunt, 05-14-2015 19:46:38  
Actually, like my Jeepster Commando, it had a used factory Power-Lok rear diff unit added to the front. I dont know if they offered them for the front axle



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Bhunt

05-19-2015 20:38:57




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to ObsoElitist, 05-19-2015 09:51:30  
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Well, I got your name right guess my memory's fading

Thanks again for the clarification Byron



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Bhunt

05-18-2015 23:07:41




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to ericlb, 05-14-2015 19:46:38  
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Thanks Old I was aware of the rear differential's single wheel spin in general on cars and trucks just expected that A 4x4 was built to go in difficult places. Seemed like they should have been built with limited slip or positraction. Like ObsoElitist noted his 72 jeep wagoner came factory with limited slip front and back. I thought he had broken something. I was really troubled with the front particularly. I've had several 4x4s but I never got one stuck like that. In a way its good because I could see what the truck was doing. I sure didn't know most had an open differential front and back..

I do appreciate the heads up guys I learned that something I had taken for granted was just false security. never to old to learn.

Thanks again for your time and help Byronl

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Bhunt

05-18-2015 23:06:56




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to ericlb, 05-14-2015 19:46:38  
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Thanks Old I was aware of the rear differential's single wheel spin in general on cars and trucks just expected that A 4x4 was built to go in difficult places. Seemed like they should have been built with limited slip or positraction. Like ObsoElitist noted his 72 jeep wagoner came factory with limited slip front and back. I thought he had broken something. I was really troubled with the front particularly. I've had several 4x4s but I never got one stuck like that. In a way its good because I could see what the truck was doing. I sure didn't know most had an open differential front and back..

I do appreciate the heads up guys I learned that something I had taken for granted was just false security. never to old to learn.

Thanks again for your time and help Byronl

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ObsoElitist

05-15-2015 17:09:47




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to Bhunt, 05-14-2015 19:46:38  
That IS where it starts. My Jeepster Commando is so pumped up that there are few fun places near home anymore, but I am only 2 hours from the Rubicon Trail.

Second to a proper safety harness, differentials should be the first modification for an offroader, but they can be expensive, and normal lockers are dangerous on the highway. A stock 1972 Wagoneer with factory limited slips on both ends can do amazing things. I grew up with offroading and Baja racing, and was surprised to find that most tractors have open diffs with mechanical locks. Open is easier for your soil, so that must be why

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ObsoElitist

05-15-2015 09:15:15




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to Bhunt, 05-14-2015 19:46:38  
Itnworks exactly like the rear which has no locking hubs. The hubs are there to save driveline wear and about 1 MPG when not using 4wd. I leave mine locked all winter unless I am taking a 50 mile or longer roads trip.

a good eplannation of how they work and why limited slip or locking is better, isin on these two videos.

https://m.youtube.com/watch?v=SOgoejxzF8c

https://m.youtube.com/watch?v=WeLm7wHvdxQ

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Bhunt

05-15-2015 16:07:17




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to ObsoElitist, 05-15-2015 09:15:15  
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Thanks for the links ObsoElitist I shared it with my son. That makes things crystal clear. This kid is already bugging me to find another differential with limited slip in it. Is this how it starts?
Well Thanks for the links and your time is greatly appreciated.
Byron & Jonathan



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Bhunt

05-14-2015 22:51:45




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to Bob, 05-14-2015 19:46:38  
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Thanks for the response Obsoelitist, He's not a serious off roader just a dumb bored kid in a small town looking to have fun like we all were once. Can anyone help me understand why you would have a locking hub on the left front if it don't lock anything.
Thanks for the help in advance



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old

05-18-2015 21:34:27




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to Bhunt, 05-14-2015 22:51:45  
Normal operation for the common 4X4 trucks due to the diff and how they work. Like with any common car or truck that is 2 wheel drive if one tire spins the other will just sit there and that is how things work. On a 4X4 you just have one more tire that will spin and if both front and rear have one tire spinning your dead in the water. Not if you have a posi track system then that is a different story

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ObsoElitist

05-14-2015 20:20:26




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 Re: 1979 chevy 4x4 stuck in watering hole in reply to Bhunt, 05-14-2015 19:46:38  
Normal operation for open differentials. This is why serious off roaders get limited slip or locking diffs.



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