4x4 guys, I need some info on transfer cases - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bigd65 · 11-10-2012, 10:01 AM

Ok my 82. Use to be a diesel but now gas. Guessing the engine tranny both changed but unsure. It goes into 4x4 but grinds and when you try to take it out, it grinds. A guy that was going to buy the truck said it was just a ink age problem. What else. It goes in 4x4 but grinds putting it and taking it out. It's. TH400 tranny,, but not real sure what the transfer case is.

I posted it on the 4x4 page but got no responses, but after retreading it , I would not have what I was saying eather

I'm actually trying to sell this truck and need to get this fixed
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Greenlee · 11-10-2012, 10:13 AM

There might not be anything wrong with it. If you just lightly push on the shifter they will grind. You have to do it with one swift and deliberate motion.
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bilfman · 11-10-2012, 10:19 AM

4 low can grind are you sure you are going into 4 hi ? Also would be good to know if it is a 203, 205 etc might help the diagnosis. The first pic is a 205 in the truck and the second is a 203 out of the truck.

75chev4x4 · 11-10-2012, 12:10 PM

On my turbo 400/ np203 it grinds too when I shift the transfer case even with trans in neutral. Don't think anything is wrong with it it has always done it. I andjusted the linkage it shifts better but still grinds. I just shut mine off shift to 4x4 and start back up and go.

kris's66lwb · 11-10-2012, 01:20 PM

My 203 grinds going into lo lock wouldn't an 82 have a 208
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sethv · 11-10-2012, 09:55 PM

I like the grinding, it lets ya know when it shifts..

lol. My 205 grinds every once and a while.

bigd65 · 11-11-2012, 08:27 AM

Kris, I don't know if its original, the was a diesel. One of the PO put a 350 in it. I will get under it later and see what it is. I didn't know the grinding was normal in these things
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kris's66lwb · 11-11-2012, 12:31 PM

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bigd65 · 11-11-2012, 11:58 PM

You know I guess I should have added that its not just like a grind, like putting a standard shift in gear, it's like the gears are SPINNING. It's a fast grind
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86454k30 · 11-12-2012, 12:43 AM

Your truck "should" have a NP208, easy to tell the case is aluminum. Grinding into 4lo is not out of the ordinary. Is it grinding when in park or driving?

bigd65 · 11-12-2012, 07:30 AM

In park, grinds in and out. I would like to mess with it today
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Your41Plague12 · 11-12-2012, 07:50 AM

The linkage could very well be messed up. My truck did the same thing, it was like the truck wouldn't shift completely out of 4-wheel drive. Look under the truck and adjust the linkage accordingly. Does yours have a body lift?

bigd65 · 11-12-2012, 08:38 AM

No , no body lift, I also need to remove the high hump and recut the hole in the floor. I don't even know why the high hump was put on it. The hole in the floor is not right and seems like the shifter hits it a bit
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Redcap · 11-12-2012, 12:35 PM

Quote:

Originally Posted by bigd65

No , no body lift, I also need to remove the high hump and recut the hole in the floor. I don't even know why the high hump was put on it. The hole in the floor is not right and seems like the shifter hits it a bit
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At one time, there was probably a 4speed in it. Hence the need for the high hump.

kris's66lwb · 11-12-2012, 01:21 PM

My 79 is factory with the high hump. Did they go to a low hump with an auto and 4x4
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LONGHAIR · 11-12-2012, 08:17 PM

Be very careful when shifting a 203 into "loc", the planetary ring is a weak link in those things, especially the lighter duty "stamped steel" ones.

bigd65 · 11-12-2012, 11:42 PM

Quote:

Originally Posted by kris's66lwb

My 79 is factory with the high hump. Did they go to a low hump with an auto and 4x4
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The high hump, I believe was for standard shift ?
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kris's66lwb · 11-13-2012, 12:49 AM

I know my truck is OG auto and 4x4 with a high hump I know we tried once to put a cab from a 2wd auto on a auto 4x4 frame and it wouldn't clear the xfer case
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Your41Plague12 · 11-13-2012, 07:46 AM

Quote:

Originally Posted by bigd65

The high hump, I believe was for standard shift ?
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All 4x4's and all standard shifts (4x2 and 4x4) had a high hump. Regardless of whether your 4x4 was an automatic or standard, it came from the factory with a high hump. Otherwise your cab would never clear the transfer case without at least a 2" body lift.

bigd65 · 11-13-2012, 08:26 AM

I look under mine and the regular size hump is still there. You can tell the high hump was added but the rest of the floor under the high hump was not removed
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11-10-2012, 10:01 AM	#1
bigd65 Registered User Join Date: Mar 2000 Location: Lake Jackson, TX. Posts: 1,930	4x4 guys, I need some info on transfer cases Ok my 82. Use to be a diesel but now gas. Guessing the engine tranny both changed but unsure. It goes into 4x4 but grinds and when you try to take it out, it grinds. A guy that was going to buy the truck said it was just a ink age problem. What else. It goes in 4x4 but grinds putting it and taking it out. It's. TH400 tranny,, but not real sure what the transfer case is. I posted it on the 4x4 page but got no responses, but after retreading it , I would not have what I was saying eather I'm actually trying to sell this truck and need to get this fixed Posted via Mobile Device __________________ 2004 Silverado Crewcab (Dark Spiral Gray)

11-10-2012, 10:13 AM	#2
Greenlee Registered User Join Date: Jun 2004 Location: El Lago, TX Posts: 1,668	Re: 4x4 guys, I need some info on transfer cases There might not be anything wrong with it. If you just lightly push on the shifter they will grind. You have to do it with one swift and deliberate motion. Posted via Mobile Device

11-10-2012, 10:19 AM	#3
bilfman Registered User Join Date: Dec 2011 Location: Regina, SK, Canada Posts: 622	Re: 4x4 guys, I need some info on transfer cases 4 low can grind are you sure you are going into 4 hi ? Also would be good to know if it is a 203, 205 etc might help the diagnosis. The first pic is a 205 in the truck and the second is a 203 out of the truck. Attached Images __________________ 1979 Chevy Dually Crew 4X4 454, D60 Tru-trac, D70 Detroit Locker, 3.73, 4L80E/NP205 1971 GMC 3/4 Ton 4X4

11-10-2012, 12:10 PM	#4
75chev4x4 Registered User Join Date: May 2012 Location: Estacada, Oregon Posts: 254	Re: 4x4 guys, I need some info on transfer cases On my turbo 400/ np203 it grinds too when I shift the transfer case even with trans in neutral. Don't think anything is wrong with it it has always done it. I andjusted the linkage it shifts better but still grinds. I just shut mine off shift to 4x4 and start back up and go.

11-10-2012, 01:20 PM	#5
kris's66lwb resident wrencher Join Date: Dec 2006 Location: ramona california Posts: 720	Re: 4x4 guys, I need some info on transfer cases My 203 grinds going into lo lock wouldn't an 82 have a 208 Posted via Mobile Device

11-10-2012, 09:55 PM	#6
sethv Registered User Join Date: May 2011 Location: Bradford, PA Posts: 395	Re: 4x4 guys, I need some info on transfer cases I like the grinding, it lets ya know when it shifts.. lol. My 205 grinds every once and a while. __________________ 1981 K10 Scottsdale 305 ci \| TH350 \| NP208 \| 60k miles

11-11-2012, 08:27 AM	#7
bigd65 Registered User Join Date: Mar 2000 Location: Lake Jackson, TX. Posts: 1,930	Re: 4x4 guys, I need some info on transfer cases Kris, I don't know if its original, the was a diesel. One of the PO put a 350 in it. I will get under it later and see what it is. I didn't know the grinding was normal in these things Posted via Mobile Device __________________ 2004 Silverado Crewcab (Dark Spiral Gray)

11-11-2012, 12:31 PM	#8
kris's66lwb resident wrencher Join Date: Dec 2006 Location: ramona california Posts: 720	Re: 4x4 guys, I need some info on transfer cases Posted via Mobile Device

11-11-2012, 11:58 PM	#9
bigd65 Registered User Join Date: Mar 2000 Location: Lake Jackson, TX. Posts: 1,930	Re: 4x4 guys, I need some info on transfer cases You know I guess I should have added that its not just like a grind, like putting a standard shift in gear, it's like the gears are SPINNING. It's a fast grind Posted via Mobile Device __________________ 2004 Silverado Crewcab (Dark Spiral Gray)

11-12-2012, 12:43 AM	#10
86454k30 Registered User Join Date: May 2008 Location: Spokane, Washington Posts: 596	Re: 4x4 guys, I need some info on transfer cases Your truck "should" have a NP208, easy to tell the case is aluminum. Grinding into 4lo is not out of the ordinary. Is it grinding when in park or driving?

11-12-2012, 07:30 AM	#11
bigd65 Registered User Join Date: Mar 2000 Location: Lake Jackson, TX. Posts: 1,930	Re: 4x4 guys, I need some info on transfer cases In park, grinds in and out. I would like to mess with it today Posted via Mobile Device __________________ 2004 Silverado Crewcab (Dark Spiral Gray)

11-12-2012, 07:50 AM	#12
Your41Plague12 Registered User Join Date: Dec 2010 Location: Pittsburgh, PA Posts: 1,009	Re: 4x4 guys, I need some info on transfer cases The linkage could very well be messed up. My truck did the same thing, it was like the truck wouldn't shift completely out of 4-wheel drive. Look under the truck and adjust the linkage accordingly. Does yours have a body lift? __________________ Steve Member of the Foot Pedal Club '83 Chevy K20: 6" Rough Country, 3" Performance Accessories BL, Bushwacker Cutouts, 38x15.50 Mickey Thompson Baja Claws, 350 HP 350 crate engine from Jegs, Turbo 400

11-12-2012, 08:38 AM	#13
bigd65 Registered User Join Date: Mar 2000 Location: Lake Jackson, TX. Posts: 1,930	Re: 4x4 guys, I need some info on transfer cases No , no body lift, I also need to remove the high hump and recut the hole in the floor. I don't even know why the high hump was put on it. The hole in the floor is not right and seems like the shifter hits it a bit Posted via Mobile Device __________________ 2004 Silverado Crewcab (Dark Spiral Gray)

11-12-2012, 01:21 PM	#15
kris's66lwb resident wrencher Join Date: Dec 2006 Location: ramona california Posts: 720	Re: 4x4 guys, I need some info on transfer cases My 79 is factory with the high hump. Did they go to a low hump with an auto and 4x4 Posted via Mobile Device

11-13-2012, 12:49 AM	#18
kris's66lwb resident wrencher Join Date: Dec 2006 Location: ramona california Posts: 720	Re: 4x4 guys, I need some info on transfer cases I know my truck is OG auto and 4x4 with a high hump I know we tried once to put a cab from a 2wd auto on a auto 4x4 frame and it wouldn't clear the xfer case Posted via Mobile Device



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11-13-2012, 08:26 AM	#20
bigd65 Registered User Join Date: Mar 2000 Location: Lake Jackson, TX. Posts: 1,930	Re: 4x4 guys, I need some info on transfer cases I look under mine and the regular size hump is still there. You can tell the high hump was added but the rest of the floor under the high hump was not removed Posted via Mobile Device __________________ 2004 Silverado Crewcab (Dark Spiral Gray)

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