Pics of my oddball lockouts 67 K-20 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

O'l Buck · 04-17-2007, 10:10 PM

Here are the pics of the lockouts I've been having problems with, along with the spicer decal on the glovebox, and the option tag...does anyone know how to decode the options? maybe they might shed some light on this subject. I need to figure out what axle I have because the seal for the closed knuckle on the left is leaking and I'd like to replace it. Dad said anytime he ordered U-joints for it, he had to order 1 ton parts, but I was under the impression Chevrolet didn't make a 1 ton 4x4 in 67. I didn't scrape the grease off of it, but it has a 10 bolt cover and still has the differential tag, 4.55 gears in front. This truck is factory, nothing has been changed and to my knowlege, it hasn't been opened up since it was new, and Dad was the 2nd owner of it. It is factory equipped with Detroit lockers in both axles, and even has a decal behind the seat to explain that.

Anyone that knows anything about this animal, help would be appreciated.

Big D · 04-18-2007, 12:36 AM

I've got the same hubs on my 72 K-20 chassis. All I know about them is that they were made by spicer. Mine has a Dana 44 axle in the front, which have a 10 bolt cover. I know that Dana and Spicer are the same company. YOu might look on the Dana web site for info.

Heres a site for axle ID http://www.nationwideparts.com/differentials.htm

I disassembled mine recently, There a pretty simple design. I bead blasted mine, they work pretty good but are a little stiff to turn. I bet in the winter you would want to carry a pair of pliers to lock them in.

O'l Buck · 04-18-2007, 09:43 AM

Dana 44 'eh? maye parts arent as imposible to find for these diffs as Dad has been leading me to believe. I think I'll take the hub apart again clean the grease off of it and try some gear oil. Good information to have on the site you posted, looks like the bolt pattern is the same on the 44 and the 60, 70, and 80....now I need to go scrape the grease off of the axle and check some numbers. Maybe I'll get lucky and it's got 60's

Thanks for the reply.

**Yukon Jack** · 04-18-2007, 11:00 AM

Those are the same hubs that are on my 69 K20 which has a closed knuckle Dana 44.

1969K10 · 04-18-2007, 12:33 PM

Quote:

Originally Posted by O'l Buck

Dana 44 'eh? maye parts arent as imposible to find for these diffs as Dad has been leading me to believe.Thanks for the reply.

I rebuilt my closed knuckle a couple years back. finding the gaskets that go around the "ball knuckle" were a PITA to find, but they are just felt. I actually screwed up and ordered 2 sets... so I've got an extra set at the house if you're interested.

cobinder · 04-18-2007, 12:50 PM

Buck I believe the pic and the ebay ad I posted will fit your axle. According to all the info I've found you should have this axle. They didn't use the corp 10 bolt until 77 or so, and it was never a closed knuckle.

You should be able to find the model "44" cast into the differantial. Also the production numbers are stamped on the main tube. If you look at the pic they would be right behind the tie rod and about 4" on to the long axle tube just out of the picture, warning they are very small 3/16's. Will also have the date of man.

Heres a link to the Dana site. Once you find the numbers you can go there and decode your axle.

http://www2.dana.com/expert/wc.dll?cvsp~Depdf~5~AXL~
Good luck!

ND_guy · 04-18-2007, 01:07 PM

Same as mine. I have to use a plier to turm mine occasionally. I have had them apart to clean them and reassembled using synthetic Mobil 1 grease. That did make a huge difference.

O'l Buck · 04-18-2007, 05:29 PM

Cool, I was starting to think dad was right and I had a rare bird that was impossible to find parts for. I found the productions numbers, but did not scrape the grease off of the differential case. The number were 1 18 7B5 602878 3 now that I've seen some more pics, and have some more information, the hubs posted from ebay look like they would work, same application, different style.

O'l Buck · 04-18-2007, 09:08 PM

I got it figured out, dana 44 it is. I Found the spot to scrape and there it was, 44.

Thanks to everyone for the help.

cobinder · 04-18-2007, 09:40 PM

Very cool Buck
Good luck!

JAKES 68GMC · 04-18-2007, 11:26 PM

Same hubs here on my 68, I always need a wrench to lock them in.

OLDCHEV4X4 · 04-19-2007, 01:49 PM

looks like 602878-3 is a 67 k20 standard diff. with 4:55 gears.

1969 GMC · 04-19-2007, 01:54 PM

Quote:

Originally Posted by O'l Buck

602878 3

This is the number you need, dana spicer calls it the bill of material number. According to my dana-spicer catalog, you have an axle from a 1967 K20 (duh!), open differential (your sticker just means you have a No-Spin in the rear, not front, unless your dad installed one), 4.55 gears.

Dang, OLDCHEV beat me to it!

O'l Buck · 04-25-2007, 08:17 PM

Thanks for all the great info, The gearing and the lockers have always been my favorite part of this truck, even with a worn out 350 with a burnt exhaust valve, it's still peppy and pulls good, great in the mud, and can do most anythig I ask it too....including getting my 93 K 2500 out of trouble when they are both buried to the axles in the wheat stubble

Americanrider · 04-27-2007, 01:53 AM

I had the same hubs on my 67 K20, they where listed on the build sheet and glove box lable. I junked the axle and sold the hubs to board member Jerry Moss. I also had a Spicer Hubs factory pamplet that I sent along with them. Contact him and see if he still has it. He might make you a copy if you ask nice.

04-17-2007, 10:10 PM	#1
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	Pics of my oddball lockouts 67 K-20 Here are the pics of the lockouts I've been having problems with, along with the spicer decal on the glovebox, and the option tag...does anyone know how to decode the options? maybe they might shed some light on this subject. I need to figure out what axle I have because the seal for the closed knuckle on the left is leaking and I'd like to replace it. Dad said anytime he ordered U-joints for it, he had to order 1 ton parts, but I was under the impression Chevrolet didn't make a 1 ton 4x4 in 67. I didn't scrape the grease off of it, but it has a 10 bolt cover and still has the differential tag, 4.55 gears in front. This truck is factory, nothing has been changed and to my knowlege, it hasn't been opened up since it was new, and Dad was the 2nd owner of it. It is factory equipped with Detroit lockers in both axles, and even has a decal behind the seat to explain that. Anyone that knows anything about this animal, help would be appreciated. Attached Images __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

04-18-2007, 12:36 AM	#2
Big D Registered User Join Date: Apr 2005 Location: Dunlap, IL Posts: 308	Re: Pics of my oddball lockouts 67 K-20 I've got the same hubs on my 72 K-20 chassis. All I know about them is that they were made by spicer. Mine has a Dana 44 axle in the front, which have a 10 bolt cover. I know that Dana and Spicer are the same company. YOu might look on the Dana web site for info. Heres a site for axle ID http://www.nationwideparts.com/differentials.htm I disassembled mine recently, There a pretty simple design. I bead blasted mine, they work pretty good but are a little stiff to turn. I bet in the winter you would want to carry a pair of pliers to lock them in. __________________ 68 GMC 64 1/2 Mustang convert A bachelor's life is no life for a single man." - Samuel Goldwyn

04-18-2007, 09:43 AM	#3
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	Re: Pics of my oddball lockouts 67 K-20 Dana 44 'eh? maye parts arent as imposible to find for these diffs as Dad has been leading me to believe. I think I'll take the hub apart again clean the grease off of it and try some gear oil. Good information to have on the site you posted, looks like the bolt pattern is the same on the 44 and the 60, 70, and 80....now I need to go scrape the grease off of the axle and check some numbers. Maybe I'll get lucky and it's got 60's Thanks for the reply. __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

04-18-2007, 11:00 AM	#4
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Re: Pics of my oddball lockouts 67 K-20 Those are the same hubs that are on my 69 K20 which has a closed knuckle Dana 44. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 Last edited by Yukon Jack; 04-18-2007 at 11:08 AM.

04-18-2007, 12:50 PM	#6
cobinder Everything is work in progress Join Date: Apr 2006 Location: Denver Colorado Posts: 326	Re: Pics of my oddball lockouts 67 K-20 Buck I believe the pic and the ebay ad I posted will fit your axle. According to all the info I've found you should have this axle. They didn't use the corp 10 bolt until 77 or so, and it was never a closed knuckle. You should be able to find the model "44" cast into the differantial. Also the production numbers are stamped on the main tube. If you look at the pic they would be right behind the tie rod and about 4" on to the long axle tube just out of the picture, warning they are very small 3/16's. Will also have the date of man. Heres a link to the Dana site. Once you find the numbers you can go there and decode your axle. http://www2.dana.com/expert/wc.dll?cvsp~Depdf~5~AXL~ Good luck! Attached Images __________________ Good luck with your truck! How much?! It's just an old truck part!! 49 International on a 80 GMC 3/4ton 4x4 chassis 48 International KB-5 2 ton dump bed 04 Honda CRF "500" 09 Honda CRF450 fuel injected rocket 03 Suzuki hayabusa carbonfiber wheeled monster. 02 Ford diesel stretch van (toy hauler) 01 38' Monaco diesel pusher motorhome Last edited by cobinder; 04-18-2007 at 12:56 PM.

04-18-2007, 01:07 PM	#7
ND_guy Tool Addiction=Money Shortage Join Date: Mar 2006 Location: Grand Forks, ND Posts: 233	Re: Pics of my oddball lockouts 67 K-20 Same as mine. I have to use a plier to turm mine occasionally. I have had them apart to clean them and reassembled using synthetic Mobil 1 grease. That did make a huge difference. __________________ 1967 K20 400TBI SM465/NP205 posi front, Detroit locker 4.56 rear

04-18-2007, 05:29 PM	#8
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	Re: Pics of my oddball lockouts 67 K-20 Cool, I was starting to think dad was right and I had a rare bird that was impossible to find parts for. I found the productions numbers, but did not scrape the grease off of the differential case. The number were 1 18 7B5 602878 3 now that I've seen some more pics, and have some more information, the hubs posted from ebay look like they would work, same application, different style. __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

04-18-2007, 09:08 PM	#9
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	Re: Pics of my oddball lockouts 67 K-20 I got it figured out, dana 44 it is. I Found the spot to scrape and there it was, 44. Thanks to everyone for the help. __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

04-18-2007, 09:40 PM	#10
cobinder Everything is work in progress Join Date: Apr 2006 Location: Denver Colorado Posts: 326	Re: Pics of my oddball lockouts 67 K-20 Very cool Buck Good luck! __________________ Good luck with your truck! How much?! It's just an old truck part!! 49 International on a 80 GMC 3/4ton 4x4 chassis 48 International KB-5 2 ton dump bed 04 Honda CRF "500" 09 Honda CRF450 fuel injected rocket 03 Suzuki hayabusa carbonfiber wheeled monster. 02 Ford diesel stretch van (toy hauler) 01 38' Monaco diesel pusher motorhome

04-18-2007, 11:26 PM	#11
JAKES 68GMC Aluminum slot wheels rule... Join Date: Jan 2006 Location: Maine Posts: 6,212	Re: Pics of my oddball lockouts 67 K-20 Same hubs here on my 68, I always need a wrench to lock them in.

04-19-2007, 01:49 PM	#12
OLDCHEV4X4 Registered User Join Date: Apr 2000 Location: Chester County PA, USA Posts: 1,228	Re: Pics of my oddball lockouts 67 K-20 looks like 602878-3 is a 67 k20 standard diff. with 4:55 gears. __________________ 72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania

04-25-2007, 08:17 PM	#14
O'l Buck Recovering Truck Driver Join Date: Mar 2002 Location: Orleans, NE USA Posts: 1,883	Re: Pics of my oddball lockouts 67 K-20 Thanks for all the great info, The gearing and the lockers have always been my favorite part of this truck, even with a worn out 350 with a burnt exhaust valve, it's still peppy and pulls good, great in the mud, and can do most anythig I ask it too....including getting my 93 K 2500 out of trouble when they are both buried to the axles in the wheat stubble __________________ 67 K-20 350, SM465, Eaton rear, 4.56 no spin option 00 Dodge 2500 4x4, 24V cummins, 5 speed Chad South Central Nebraska

04-27-2007, 01:53 AM	#15
Americanrider Registered User Join Date: Dec 2004 Location: NW, WA. Posts: 1,421	Re: Pics of my oddball lockouts 67 K-20 I had the same hubs on my 67 K20, they where listed on the build sheet and glove box lable. I junked the axle and sold the hubs to board member Jerry Moss. I also had a Spicer Hubs factory pamplet that I sent along with them. Contact him and see if he still has it. He might make you a copy if you ask nice. Attached Images



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