Quick Question about 1 ton 4x4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Kiss My SS · 03-26-2003, 11:20 PM

Hey guys,

On a recent junk yard hunt, I found a complete 1 ton, crew cab 4x4. It is a late 70's or early 80's truck. the body is shot, but the axles look good. I am seriously considering buying them. The front axle is a Dana 60. the rear is a 14bff. It is a full time 4x4. My question is, will this axle bolt into my 72 Jimmy? are there any locking hub kits for it, or can a full time axle be changed over to a part time axle? I want to keep my NP 205, so I can disengage the front axle, but I also want to be able to unlock them. any help would be great. I need to hurry though, I am sure that truck wont be there for long.

86k10 · 03-26-2003, 11:38 PM

I'd be sure you can do it if you have all the hardware from the other truck. You might have to do a little driveline work as well but I'm sure it could be done. All you need to buy for the axle is manual hubs to make it part time.

1969 GMC · 03-27-2003, 01:20 AM

just make sure the good pieces aren't beat to sh!t, they might be, but remember not many people ordered 1 ton 4x4 crewcabs to get groceries.
And you're right, even if its beat to death, it will be gone soon.

Showme-K-20 · 03-27-2003, 08:06 AM

Are you sure it's a Dana 60? I'm not absolutely positive, but I'm gonna stick my neck out here a little and maybe get some feedback from some of the other diehard 4x4 guys. I don't think Chevrolet used the NP203 full time tcase in the 1 tons. I MAY BE MISTAKEN. There might have been some of the early 70's that they did. I always thought it was the NP205 in the K-30's. Chevy did use the full time system in the 3/4 ton K-20's because I have an axle set out of a 78 with that setup. Preparing to be corrected???

Bob

Blazer1970 · 03-27-2003, 09:12 AM

If it is really a K30, it will be a Dana 60. I am also not sure that any K30s were built with NP203s, but it is possible. The axle is basically a bolt in to your Jimmy, except for the driveshaft u-joint. I assume it is a single rear wheel truck?

Kiss My SS · 03-27-2003, 09:36 AM

Yeah, it is most definately a Dana 60. I would have taken a digi pic but my buddie forgot his camera. (i always like to take pics of interesting junkyard finds to show friends or others who might need the parts) I didn't get under it to look at the T-case, but the t-case shifter and lack of locking hubs leads me to believe that it is a 203. I really want the axles for the low gears and 8 lug pattern. I am wanting a 4 inch lift to run some 35's i have on a 16.5 rim. As far as the abuse the truck has taken, I am sure it has taken lots. the body is completely shot, nothing salvageable besides maybe the hood. I figure that 14bff (which is single wheel) is probably still in great shape (as it is damn hard to bust one of those. the Dana 60 looked good. There are several things on it that could need to be replaced.

SuperStock46872 · 03-27-2003, 12:53 PM

I dunno about the 203 in a K30. But i do know that the dana 60 is a bolt in for 69-87 pick ups. gotta luv chevy! The 14 bolt will require moving of the leaf spring mounts, and shock mounts. I can't remember how much tough it has been a couple years since i did that swap. Also, all dually's had dana 70 rears, single wheels had 10.5 14 bolt.

Blazer1970 · 03-27-2003, 01:42 PM

Quote:

Originally posted by SuperStock46872
I dunno about the 203 in a K30. But i do know that the dana 60 is a bolt in for 69-87 pick ups. gotta luv chevy! The 14 bolt will require moving of the leaf spring mounts, and shock mounts. I can't remember how much tough it has been a couple years since i did that swap. Also, all dually's had dana 70 rears, single wheels had 10.5 14 bolt.

Actually, the spring pads on a '77 - '87 1 ton SRW are the correct width for '67 - '72 trucks. That is the #1 best parts truck for an axle swap into a '67 - '72 4X4. The shock mounts will have to change.

mrein3 · 03-27-2003, 02:02 PM

If you are wondering what they are worth...
A buddy is asking $1000 for a 1-ton Dana 60. Complete with an air locker, new spindles, lockouts, and turned rotors.

NAPCO ken · 03-27-2003, 05:05 PM

Most definitely it is a 203 transfer case. K30s used 203 behind TH400 auto trannys from 1977-1979. Since it is a 203 and a 1 ton truck, it would be a 1977-1979 only. These are all good pieces, I'd recommend you buying both axles and the tranny and transfer case.

86k10 · 03-27-2003, 08:25 PM

Hey Super stock, are you sure all duallys had Dana 70's. I have an 84 and my brother has an 82 and both are 14 bolt. Just had to throw that in.

NAPCO ken · 03-27-2003, 08:34 PM

Usually 14 bolts were used in FLATBED duallys, or cab & chassis duallys. Usually, normal "beded" duallys had the 70 rear.

86k10 · 03-27-2003, 08:50 PM

Ok, but ours were both originally cab and chassis duallys.

SuperStock46872 · 03-28-2003, 11:07 AM

Well, I guess I was wrong, but I know that the 14 bolt out of a 3/4 ton is different than a 72, or at least my 72 anyways. Thanks for setting me straight.

Hardrock2 · 03-28-2003, 12:05 PM

Hey guys,

Been here before, and I have found that 14-bolt's out of 3/4
tons from '73-up are all the same as far as pad width goes.
They're the wide ones.
The "oddball" 14-bolts are in 1-ton SINGLE/DUAL WHEEL trucks.
the pads are closer together on these units (it's reflected in the
hanger offset), probably due either to GVWR requirement, or
production effiency. By doing it this way, 1-ton trucks, either
single or dual wheel, had the same narrow hangers, and pad
spacing, same housing, etc. Only differences were, which axle ends (spindles) and brake package were spec'd (short spindle=
single wheel, long spindle=dual wheel) Of course, dually PICKUPS
had their own "WIDETRACK" DANA 70HD rearends.

I have at least one of each out back, if anybody needs measurments, or pics.

Mike

jeffspower · 03-29-2003, 01:52 AM

It will bolt right in. Be sure to get the u-bolt plates as the axle tube dia. is bigger. Your front driveshaft should take the same u-joint. the length should come out very close to the same. Brake hoses will be different. If you do away with those drive flanges I would be interested in them. I have a early '80s single wheel front 60 that is missing one hub/bearing assy. CAN ANYBODY FIND ME ONE PRICED REASONABLE? -Jeff

03-26-2003, 11:38 PM	#2
86k10 Registered User Join Date: Feb 2003 Location: Bertrand, Nebraska Posts: 355	I'd be sure you can do it if you have all the hardware from the other truck. You might have to do a little driveline work as well but I'm sure it could be done. All you need to buy for the axle is manual hubs to make it part time. __________________ 98 Neon 97 Grand Prix GT 02 Grand Prix 40th Anniv. 86 GMC 5.0 77 Olds 98 6.6 REAL AMERICANS, DRIVE AMERICAN

03-27-2003, 01:20 AM	#3
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	just make sure the good pieces aren't beat to sh!t, they might be, but remember not many people ordered 1 ton 4x4 crewcabs to get groceries. And you're right, even if its beat to death, it will be gone soon. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

03-27-2003, 09:12 AM	#5
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	If it is really a K30, it will be a Dana 60. I am also not sure that any K30s were built with NP203s, but it is possible. The axle is basically a bolt in to your Jimmy, except for the driveshaft u-joint. I assume it is a single rear wheel truck? __________________ Tim

03-27-2003, 09:36 AM	#6
Kiss My SS Registered User Join Date: Nov 2002 Location: Omaha/Grand Island, NE Posts: 229	Yeah, it is most definately a Dana 60. I would have taken a digi pic but my buddie forgot his camera. (i always like to take pics of interesting junkyard finds to show friends or others who might need the parts) I didn't get under it to look at the T-case, but the t-case shifter and lack of locking hubs leads me to believe that it is a 203. I really want the axles for the low gears and 8 lug pattern. I am wanting a 4 inch lift to run some 35's i have on a 16.5 rim. As far as the abuse the truck has taken, I am sure it has taken lots. the body is completely shot, nothing salvageable besides maybe the hood. I figure that 14bff (which is single wheel) is probably still in great shape (as it is damn hard to bust one of those. the Dana 60 looked good. There are several things on it that could need to be replaced. __________________ 1972 GMC Jimmy 4x4 1985 Chevy Monte Carlo SS 1996 Saturn SC-2 1996 Ford Explorer XLT -Wife's rig

03-27-2003, 12:53 PM	#7
SuperStock46872 Registered User Join Date: Feb 2003 Location: Iowa Posts: 25	I dunno about the 203 in a K30. But i do know that the dana 60 is a bolt in for 69-87 pick ups. gotta luv chevy! The 14 bolt will require moving of the leaf spring mounts, and shock mounts. I can't remember how much tough it has been a couple years since i did that swap. Also, all dually's had dana 70 rears, single wheels had 10.5 14 bolt. __________________ 1972 Chevy K10 "Warmed Over" 468 Dana 60 front Dana 70 rear 8 1/2" lift 38" Swampers

03-26-2003, 11:20 PM	#1
Kiss My SS Registered User Join Date: Nov 2002 Location: Omaha/Grand Island, NE Posts: 229	Quick Question about 1 ton 4x4 Hey guys, On a recent junk yard hunt, I found a complete 1 ton, crew cab 4x4. It is a late 70's or early 80's truck. the body is shot, but the axles look good. I am seriously considering buying them. The front axle is a Dana 60. the rear is a 14bff. It is a full time 4x4. My question is, will this axle bolt into my 72 Jimmy? are there any locking hub kits for it, or can a full time axle be changed over to a part time axle? I want to keep my NP 205, so I can disengage the front axle, but I also want to be able to unlock them. any help would be great. I need to hurry though, I am sure that truck wont be there for long. __________________ 1972 GMC Jimmy 4x4 1985 Chevy Monte Carlo SS 1996 Saturn SC-2 1996 Ford Explorer XLT -Wife's rig

03-27-2003, 08:06 AM	#4
Showme-K-20 Registered User Join Date: Feb 2001 Location: Southwest Missouri Posts: 153	Are you sure it's a Dana 60? I'm not absolutely positive, but I'm gonna stick my neck out here a little and maybe get some feedback from some of the other diehard 4x4 guys. I don't think Chevrolet used the NP203 full time tcase in the 1 tons. I MAY BE MISTAKEN. There might have been some of the early 70's that they did. I always thought it was the NP205 in the K-30's. Chevy did use the full time system in the 3/4 ton K-20's because I have an axle set out of a 78 with that setup. Preparing to be corrected??? Bob

03-27-2003, 02:02 PM	#9
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,253	If you are wondering what they are worth... A buddy is asking $1000 for a 1-ton Dana 60. Complete with an air locker, new spindles, lockouts, and turned rotors. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

03-27-2003, 05:05 PM	#10
NAPCO ken Registered User Join Date: Aug 2001 Location: anaheim, ca Posts: 187	Most definitely it is a 203 transfer case. K30s used 203 behind TH400 auto trannys from 1977-1979. Since it is a 203 and a 1 ton truck, it would be a 1977-1979 only. These are all good pieces, I'd recommend you buying both axles and the tranny and transfer case. __________________ ken '58 Chev NAPCO 4x4 short '60 GMC Suburban 4x4, restored '60 GMC 3/4T stepside 4x4 '64 GMC Suburban 4x4, restored '90 Chev Suburban 4x4, dually, ZZ502 '77 GMC Suburban 4x4, one ton axles, 12" lift, 39.5"s '88 Chevy crewcab dually 4x4, 10" lift, 42"s (x6!) '03 Jeep Wrangler Rubicon '79 Chev 3/4 Suburban 4x4, 400-400-203

03-27-2003, 08:25 PM	#11
86k10 Registered User Join Date: Feb 2003 Location: Bertrand, Nebraska Posts: 355	Hey Super stock, are you sure all duallys had Dana 70's. I have an 84 and my brother has an 82 and both are 14 bolt. Just had to throw that in. __________________ 98 Neon 97 Grand Prix GT 02 Grand Prix 40th Anniv. 86 GMC 5.0 77 Olds 98 6.6 REAL AMERICANS, DRIVE AMERICAN

03-27-2003, 08:34 PM	#12
NAPCO ken Registered User Join Date: Aug 2001 Location: anaheim, ca Posts: 187	Usually 14 bolts were used in FLATBED duallys, or cab & chassis duallys. Usually, normal "beded" duallys had the 70 rear. __________________ ken '58 Chev NAPCO 4x4 short '60 GMC Suburban 4x4, restored '60 GMC 3/4T stepside 4x4 '64 GMC Suburban 4x4, restored '90 Chev Suburban 4x4, dually, ZZ502 '77 GMC Suburban 4x4, one ton axles, 12" lift, 39.5"s '88 Chevy crewcab dually 4x4, 10" lift, 42"s (x6!) '03 Jeep Wrangler Rubicon '79 Chev 3/4 Suburban 4x4, 400-400-203

03-27-2003, 08:50 PM	#13
86k10 Registered User Join Date: Feb 2003 Location: Bertrand, Nebraska Posts: 355	Ok, but ours were both originally cab and chassis duallys. __________________ 98 Neon 97 Grand Prix GT 02 Grand Prix 40th Anniv. 86 GMC 5.0 77 Olds 98 6.6 REAL AMERICANS, DRIVE AMERICAN

03-28-2003, 11:07 AM	#14
SuperStock46872 Registered User Join Date: Feb 2003 Location: Iowa Posts: 25	Well, I guess I was wrong, but I know that the 14 bolt out of a 3/4 ton is different than a 72, or at least my 72 anyways. Thanks for setting me straight. __________________ 1972 Chevy K10 "Warmed Over" 468 Dana 60 front Dana 70 rear 8 1/2" lift 38" Swampers

03-28-2003, 12:05 PM	#15
Hardrock2 A$$ deep into trucks Join Date: Dec 2002 Location: Central Illinois,USA Posts: 249	Hey guys, Been here before, and I have found that 14-bolt's out of 3/4 tons from '73-up are all the same as far as pad width goes. They're the wide ones. The "oddball" 14-bolts are in 1-ton SINGLE/DUAL WHEEL trucks. the pads are closer together on these units (it's reflected in the hanger offset), probably due either to GVWR requirement, or production effiency. By doing it this way, 1-ton trucks, either single or dual wheel, had the same narrow hangers, and pad spacing, same housing, etc. Only differences were, which axle ends (spindles) and brake package were spec'd (short spindle= single wheel, long spindle=dual wheel) Of course, dually PICKUPS had their own "WIDETRACK" DANA 70HD rearends. I have at least one of each out back, if anybody needs measurments, or pics. Mike __________________ hardrock2

03-29-2003, 01:52 AM	#16
jeffspower Well, Whoop-dee-do! Join Date: Mar 2003 Location: Easton, Mo. pop.- me & scarcely a few others Posts: 2,302	Re: Quick Question about 1 ton 4x4 It will bolt right in. Be sure to get the u-bolt plates as the axle tube dia. is bigger. Your front driveshaft should take the same u-joint. the length should come out very close to the same. Brake hoses will be different. If you do away with those drive flanges I would be interested in them. I have a early '80s single wheel front 60 that is missing one hub/bearing assy. CAN ANYBODY FIND ME ONE PRICED REASONABLE? -Jeff



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