Axle ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

My Boy's Toy · 05-02-2004, 11:25 AM

Jest brought home the next project . 72 K-20 , trying to figer what axles I have ? It has a NP205 & Option code 1G8610 - no Slip rear axle . how common is this. & were would my axle code be? Thanks Paul

Truckstuff · 05-02-2004, 12:02 PM

Hey. If stock the front axle will be a Dana 44. The rear axle, It will be a Dana 60 or the HO72 Eaton. Do you mean (No Spin Rear Axle) if so its the Eaton. Big round insection cover with a removable 3rd member.

Truckstuff · 05-02-2004, 12:11 PM

Heres a Pic of the Eaton.

My Boy's Toy · 05-02-2004, 12:32 PM

Thanks truckstuff , Your right No spin . Great Pict & that is it . is this a good axle ? & How did you do your Rear Dic Brakes , Nice Pick , Paul

stomper72 · 05-02-2004, 12:45 PM

I have a 72 3/4 ton and it has a Dana 44 in front and did have a Dana 60 in back till I put a 14 bolt in.

**JIMs70GMC** · 05-02-2004, 01:48 PM

Yeah it's either a H052 or H072 only difference is the size of the rear drums. It's the predeccesor(sp?) to the 14 bolt. Has a 10.5" ring gear typically 4.10 or 4.56 gears. Only traction device is the no-spin AKA detroit locker, no longer made but was available in vehicles from 1948 to 1972 or something like that.

Truckstuff · 05-02-2004, 01:58 PM

I have never had a problem with the Eaton, it is an excellent axle, basically a early 14 Bolt axle. The No Spin Rear Axle means its a Detroit Locker. The disc brake conversion is the same as the 14 Bolt, but with different spacers between the flange and the backing plate. I made my own brackets. Mine is also a No Spin. Parts are getting harder to get, thats why alot of people switch to the 14 Bolt. If you got it, run it.

justinf · 05-04-2004, 12:21 PM

The eaton is a good axle, like was said, it's basically a 14 bolt. If you have problems, 14 bolt shafts, carrier, etc. will fit in the housing. The benefit of this axle over a 14 bolt is diff clearance.

1969 GMC · 05-04-2004, 12:26 PM

i recently purchased an Eaton with the No-Spin (detroit), if you ever take the diff cover off to check and see if the No-Spin is still inside, take a look at the photos in the link in my sig. they should help you out some.

**JIMs70GMC** · 05-05-2004, 05:15 AM

justinf, Do you have some pics of a eaton w/ the 14 bolt carrier and shafts? This has been talked about before but nobody has actually seen it. Does the carrier use the eaton bearings or will the 14 bolts bearing need to be installed also? Could be a good upgrade more splines on shafts and cheap detroit lockers!

justinf · 05-05-2004, 09:12 AM

I don't have any pics right now, but my brother has one from a dually with the 14 bolt carrier, shafts and detroit in it. I can find out from him if it uses the 14 bolt bearings. I believe it does.

**JIMs70GMC** · 05-05-2004, 09:41 AM

justinf, any info you can provide would be appreciated. I have an eaton w/ 4.56 gears and open diff, would like to lock it! I wounder if a "lunch box" 14b locker and 14 bolt axle shafts would fit in the eaton carrier, hmmmmm

Destructo · 05-05-2004, 10:37 AM

They don't offer lunchbox lockers for 14 bolts yet, I think just about the only thing you can get is a full detroit.

justinf · 05-05-2004, 11:04 AM

Yeah but a full detroit for a 14bff is simple. It reuses the original carrier and is cheap.

**JIMs70GMC** · 05-05-2004, 11:08 AM

Powertrax makes the Lock Right and No-Slip for the 14 bolt.

1969 GMC · 05-05-2004, 01:41 PM

the lock right and no-slip are each $400, the detroit is $350 for 14bff applications.

i am curious about using the eaton housing with 14bff innards, i think it would be the best way to go.

Budweis · 05-06-2004, 12:52 AM

looks like i have an eaton as well. that sucks to hear brake parts hard to find as getting ready to go through mine this week and just went through this prob on the front. anybody know a link for any manuals or anything on this thing. really no problem with mine besides brakes but taking it out and figured id freshen it up while out. any recommendations on what all i should do to it to freshen it up while its out? hope i can get all the parts i need.

1969 GMC · 05-06-2004, 02:22 AM

there is a disc brake conversion available for the Eaton, or you could make your own brackets and use a mishmash of brake parts to get it to work. Anyway, the kit is around $400, IIRC, with new rotors and calipers.

drink2mny · 05-06-2004, 11:51 AM

Quote:

Originally Posted by 1969 GMC

there is a disc brake conversion available for the Eaton, or you could make your own brackets and use a mishmash of brake parts to get it to work. Anyway, the kit is around $400, IIRC, with new rotors and calipers.

Here is an option 1969 GMC was talking about..
GM rear disc brake kits

Just scroll down you will see our Eaton kit..
I would also be interested in seeing how the 14 bolt axles and carriers work in the Eaton...

Budweis · 05-07-2004, 12:22 AM

conversion sounds like a good deal but my budget not gonna be able to add less no choice. looks like i need drums can these be found ?

gmc71 · 05-07-2004, 08:06 PM

Hey.... What would have come stock on 67 K20? I would like to change to disc up front are the stock front axles worth anything?

DennyB · 05-07-2004, 09:10 PM

Quote:

Originally Posted by gmc71

Hey.... What would have come stock on 67 K20? I would like to change to disc up front are the stock front axles worth anything?

You can use any axel from a 71 or 72 and get disc.
You'll just have to match gear ratios with the rear.

1969 GMC · 05-08-2004, 03:03 AM

Quote:

Originally Posted by Budweis

conversion sounds like a good deal but my budget not gonna be able to add less no choice. looks like i need drums can these be found ?

the drums can be expensive if you can find them. also, the wheel cylinders are outrageously priced (from what I hear) in comparison with other wheel cylinders. that is why I plan on converting my HO52 to discs, someday. In addition, i get to have the 4 wheel disc bling factor.

gmc71, you have a dana 44 up front, with closed knuckles and drum brakes. you can swap a disc braked dana 44 ('71-'80) or 10 bolt ('77-'91) in, but you will need new ubolts, and also the brake fittings changed over to metric sometime in the 70s.

Truckstuff · 05-08-2004, 10:25 AM

Money is always a problem. If you think about your time, and the price to go stock. It might be cheaper to convert to disc...

Budweis · 05-08-2004, 03:49 PM

ok yeah i think you guys are right so i went ahead and ordered the rear disc conversion, now im excited gonna rock with 4 wheel disk be just like my vettes. my drum days are finally over lol

05-02-2004, 11:25 AM	#1
My Boy's Toy Registered User Join Date: Dec 2001 Location: West Unity, OH, USA Posts: 235	Axle ? Jest brought home the next project . 72 K-20 , trying to figer what axles I have ? It has a NP205 & Option code 1G8610 - no Slip rear axle . how common is this. & were would my axle code be? Thanks Paul

05-02-2004, 12:02 PM	#2
Truckstuff Registered User Join Date: Dec 2003 Location: Cloverdale, British Columbia Canada Posts: 159	Axles Hey. If stock the front axle will be a Dana 44. The rear axle, It will be a Dana 60 or the HO72 Eaton. Do you mean (No Spin Rear Axle) if so its the Eaton. Big round insection cover with a removable 3rd member. __________________ Real Trucks are Built not Bought Building: 1981 GM SB LowRider 1985 GM K3500 3+3 1981 GM K2500 SSB 1980 GM K2500 X-BC Hydro 1979 GM K3500 3+3 1976 GM K5 Blazer 1970 Custom 10 http://bc4x4.com/ Last edited by Truckstuff; 05-02-2004 at 12:15 PM.

05-02-2004, 12:11 PM	#3
Truckstuff Registered User Join Date: Dec 2003 Location: Cloverdale, British Columbia Canada Posts: 159	Heres a Pic of the Eaton. Attached Images __________________ Real Trucks are Built not Bought Building: 1981 GM SB LowRider 1985 GM K3500 3+3 1981 GM K2500 SSB 1980 GM K2500 X-BC Hydro 1979 GM K3500 3+3 1976 GM K5 Blazer 1970 Custom 10 http://bc4x4.com/ Last edited by Truckstuff; 05-04-2004 at 12:28 AM.

05-02-2004, 01:48 PM	#6
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Yeah it's either a H052 or H072 only difference is the size of the rear drums. It's the predeccesor(sp?) to the 14 bolt. Has a 10.5" ring gear typically 4.10 or 4.56 gears. Only traction device is the no-spin AKA detroit locker, no longer made but was available in vehicles from 1948 to 1972 or something like that. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

05-02-2004, 01:58 PM	#7
Truckstuff Registered User Join Date: Dec 2003 Location: Cloverdale, British Columbia Canada Posts: 159	Axles I have never had a problem with the Eaton, it is an excellent axle, basically a early 14 Bolt axle. The No Spin Rear Axle means its a Detroit Locker. The disc brake conversion is the same as the 14 Bolt, but with different spacers between the flange and the backing plate. I made my own brackets. Mine is also a No Spin. Parts are getting harder to get, thats why alot of people switch to the 14 Bolt. If you got it, run it. __________________ Real Trucks are Built not Bought Building: 1981 GM SB LowRider 1985 GM K3500 3+3 1981 GM K2500 SSB 1980 GM K2500 X-BC Hydro 1979 GM K3500 3+3 1976 GM K5 Blazer 1970 Custom 10 http://bc4x4.com/

05-02-2004, 12:32 PM	#4
My Boy's Toy Registered User Join Date: Dec 2001 Location: West Unity, OH, USA Posts: 235	Thanks truckstuff , Your right No spin . Great Pict & that is it . is this a good axle ? & How did you do your Rear Dic Brakes , Nice Pick , Paul

05-02-2004, 12:45 PM	#5
stomper72 Registered User Join Date: Jun 2003 Location: Arnold, MO Posts: 110	I have a 72 3/4 ton and it has a Dana 44 in front and did have a Dana 60 in back till I put a 14 bolt in.

05-04-2004, 12:21 PM	#8
justinf Registered User Join Date: Jan 2004 Location: Illinois Posts: 64	The eaton is a good axle, like was said, it's basically a 14 bolt. If you have problems, 14 bolt shafts, carrier, etc. will fit in the housing. The benefit of this axle over a 14 bolt is diff clearance. __________________ 1981 CJ7 - 350TBI, sm465, np205, D60, 14bolt, 5.13s, detroits, 38.5 SX's 1998 Z71 extended cab 1998 Tahoe 2001 Tahoe LS - FOR SALE - $18,500

05-04-2004, 12:26 PM	#9
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	i recently purchased an Eaton with the No-Spin (detroit), if you ever take the diff cover off to check and see if the No-Spin is still inside, take a look at the photos in the link in my sig. they should help you out some. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

05-05-2004, 05:15 AM	#10
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	justinf, Do you have some pics of a eaton w/ the 14 bolt carrier and shafts? This has been talked about before but nobody has actually seen it. Does the carrier use the eaton bearings or will the 14 bolts bearing need to be installed also? Could be a good upgrade more splines on shafts and cheap detroit lockers! __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

05-05-2004, 09:12 AM	#11
justinf Registered User Join Date: Jan 2004 Location: Illinois Posts: 64	I don't have any pics right now, but my brother has one from a dually with the 14 bolt carrier, shafts and detroit in it. I can find out from him if it uses the 14 bolt bearings. I believe it does. __________________ 1981 CJ7 - 350TBI, sm465, np205, D60, 14bolt, 5.13s, detroits, 38.5 SX's 1998 Z71 extended cab 1998 Tahoe 2001 Tahoe LS - FOR SALE - $18,500

05-05-2004, 09:41 AM	#12
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	justinf, any info you can provide would be appreciated. I have an eaton w/ 4.56 gears and open diff, would like to lock it! I wounder if a "lunch box" 14b locker and 14 bolt axle shafts would fit in the eaton carrier, hmmmmm __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

05-05-2004, 10:37 AM	#13
Destructo Registered User Join Date: Sep 2003 Location: Lewisville, NC Posts: 1,836	They don't offer lunchbox lockers for 14 bolts yet, I think just about the only thing you can get is a full detroit. __________________ 1985 Scottsdale Shortbed 4x4 Stout 350 with some "upgrades"-700r4-33x12.5" Mud Tires, Warn 8274-50 winch. 2005 Chevrolet Colorado Regular Cab 2wd 4-banger, 5 speed, Street Pack with 3.73 axle.

05-05-2004, 11:04 AM	#14
justinf Registered User Join Date: Jan 2004 Location: Illinois Posts: 64	Yeah but a full detroit for a 14bff is simple. It reuses the original carrier and is cheap. __________________ 1981 CJ7 - 350TBI, sm465, np205, D60, 14bolt, 5.13s, detroits, 38.5 SX's 1998 Z71 extended cab 1998 Tahoe 2001 Tahoe LS - FOR SALE - $18,500

05-05-2004, 11:08 AM	#15
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Powertrax makes the Lock Right and No-Slip for the 14 bolt. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm



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05-05-2004, 01:41 PM	#16
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	the lock right and no-slip are each $400, the detroit is $350 for 14bff applications. i am curious about using the eaton housing with 14bff innards, i think it would be the best way to go. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

05-06-2004, 12:52 AM	#17
Budweis Geared for Collision Join Date: Jan 2004 Location: St. Louis, Mo. Posts: 683	looks like i have an eaton as well. that sucks to hear brake parts hard to find as getting ready to go through mine this week and just went through this prob on the front. anybody know a link for any manuals or anything on this thing. really no problem with mine besides brakes but taking it out and figured id freshen it up while out. any recommendations on what all i should do to it to freshen it up while its out? hope i can get all the parts i need. __________________ MEMBER OF THE 4 WHEEL DISK BRAKE CLUB 1970 C/K20 3/4 Ton 1996 Collectors Edition Corvette 1977 Corvette Coupe Last edited by Budweis; 05-06-2004 at 12:59 AM.

05-06-2004, 02:22 AM	#18
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	there is a disc brake conversion available for the Eaton, or you could make your own brackets and use a mishmash of brake parts to get it to work. Anyway, the kit is around $400, IIRC, with new rotors and calipers. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

05-07-2004, 12:22 AM	#20
Budweis Geared for Collision Join Date: Jan 2004 Location: St. Louis, Mo. Posts: 683	conversion sounds like a good deal but my budget not gonna be able to add less no choice. looks like i need drums can these be found ? __________________ MEMBER OF THE 4 WHEEL DISK BRAKE CLUB 1970 C/K20 3/4 Ton 1996 Collectors Edition Corvette 1977 Corvette Coupe

05-07-2004, 08:06 PM	#21
gmc71 Registered User Join Date: Aug 2003 Location: Buffalo, NY Posts: 115	Hey.... What would have come stock on 67 K20? I would like to change to disc up front are the stock front axles worth anything?

05-08-2004, 10:25 AM	#24
Truckstuff Registered User Join Date: Dec 2003 Location: Cloverdale, British Columbia Canada Posts: 159	Budweis Money is always a problem. If you think about your time, and the price to go stock. It might be cheaper to convert to disc... __________________ Real Trucks are Built not Bought Building: 1981 GM SB LowRider 1985 GM K3500 3+3 1981 GM K2500 SSB 1980 GM K2500 X-BC Hydro 1979 GM K3500 3+3 1976 GM K5 Blazer 1970 Custom 10 http://bc4x4.com/

05-08-2004, 03:49 PM	#25
Budweis Geared for Collision Join Date: Jan 2004 Location: St. Louis, Mo. Posts: 683	ok yeah i think you guys are right so i went ahead and ordered the rear disc conversion, now im excited gonna rock with 4 wheel disk be just like my vettes. my drum days are finally over lol __________________ MEMBER OF THE 4 WHEEL DISK BRAKE CLUB 1970 C/K20 3/4 Ton 1996 Collectors Edition Corvette 1977 Corvette Coupe

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