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

PaRedneckRiders · 08-25-2012, 10:37 AM

First off let me say this is not on a GM truck it is actually on one of my friends old fords.
We are trying to figure out what this axle is he has two identical trucks and doesn't know what the front axle is on either.
They are both 1973 ford f350's but from factory they were two wheel drive. They were bought by an independent company and converted two four wheel drive for use on gas wells.
Both trucks have divorced np205 transfer cases and a passenger side drop diff.
Doesn't look like any dana 60 ive seen so im not real sure what it is, i know the ford steering components sit behind the axle like they are on this axle but the GM axles have it up front.
Ill post the pictures i have in a little bit and im sorry the pictures i have suck next time im at his place ill get some better pictures.

DirtyLarry · 08-25-2012, 12:09 PM

Ya, we need pictures. If it was converted to 4x4 it could have just about anything in the front.

obijuan · 08-25-2012, 08:34 PM

betting on a closed knuckle 44.

b454rat · 08-27-2012, 07:38 AM

Behind the axle steering and F350s tells me Dana 70s with closed knuckles...

**JPBrecheisen** · 08-27-2012, 11:42 AM

Maybe this will help you get in the ball park?

PaRedneckRiders · 08-27-2012, 04:43 PM

Sorry about the delay on pictures guys been really busy lately.
Here are the pictures i have not these are pretty crappy so i will try and get some better ones asap.

Also on the pictured axle just to the right of the diff looking at it looks to be the numbers 67680 and on the dash of this truck (still has the original cab although it is junk) is a sticker that says "When ordering service parts please refer to this number 933 . 531" not really sure if that has anything to do with this or not.

The diff cover doesnt resemble any of the ones posted but what threw me off to begin with is that both the diff cover can be unbolted as well as the back of the axle.

obijuan · 08-27-2012, 06:25 PM

that looks to be a napco conversion.

BLAZERMAN · 08-27-2012, 07:09 PM

Thats an interesting truck, would like to see more pics of the whole thing if you have any. Napco did mostly Chevys but I've heard they possibly did a few Fords, back then Howe Coleman were really big into doing Fords and Chevys in the bigger trucks. It should have a tag somewhere with the builders name on it.

b454rat · 08-27-2012, 10:08 PM

Napco did 1 ton conversions on 4wds. Not sure on Fords, but I know early GMs couldn't get a 1 ton, had to be thru these guys.

Axle looks like an Eaton

V30 mongo · 08-28-2012, 04:13 PM

Try Marmon Herrington. They are still in business.

PaRedneckRiders · 08-28-2012, 09:09 PM

Quote:

Originally Posted by BLAZERMAN

Thats an interesting truck, would like to see more pics of the whole thing if you have any. Napco did mostly Chevys but I've heard they possibly did a few Fords, back then Howe Coleman were really big into doing Fords and Chevys in the bigger trucks. It should have a tag somewhere with the builders name on it.

Well both trucks are pretty well torn apart one is a bare frame the other is still together but now has a single wheel bed on it and regular wheels on the dually axles. Its together like that just for now so that he can pull with it at the local fair.

**argonaut** · 08-28-2012, 11:18 PM

Looks like Eaton to me. Pretty cool.

PaRedneckRiders · 09-02-2012, 09:29 AM

Okay so I got some more pictures.
Here is the truck itself.

It is a Napco conversion it has a tag on the inside of the door.

It doesn't have an np205 like i stated before.

Here is the front axle i didn't get any pictures of the knuckles or the numbers beside the front diff.

These pictures are of the other truck, the first picture were of the truck with no body this is of the truck that runs but they are identical to each other underneath.

b454rat · 09-02-2012, 09:45 AM

Think it's a Dana 20 and def Eaton front. Pretty weird, Ford having pass drop front end....

68panelman · 09-02-2012, 10:34 AM

The transfer case looks to be in the rockwell family, bigger than the 221 though.

Redcap · 09-02-2012, 11:31 AM

Quote:

Originally Posted by 68panelman

The transfer case looks to be in the rockwell family, bigger than the 221 though.

You are correct, it is a Rockwell.

b454rat · 09-02-2012, 03:12 PM

Sorry not too familiar with the older stuff....

08-25-2012, 10:37 AM	#1
PaRedneckRiders Registered User Join Date: Jun 2011 Location: Armagh,PA Posts: 138	Axle Identification question First off let me say this is not on a GM truck it is actually on one of my friends old fords. We are trying to figure out what this axle is he has two identical trucks and doesn't know what the front axle is on either. They are both 1973 ford f350's but from factory they were two wheel drive. They were bought by an independent company and converted two four wheel drive for use on gas wells. Both trucks have divorced np205 transfer cases and a passenger side drop diff. Doesn't look like any dana 60 ive seen so im not real sure what it is, i know the ford steering components sit behind the axle like they are on this axle but the GM axles have it up front. Ill post the pictures i have in a little bit and im sorry the pictures i have suck next time im at his place ill get some better pictures.

08-25-2012, 12:09 PM	#2
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: Axle Identification question Ya, we need pictures. If it was converted to 4x4 it could have just about anything in the front. __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

08-25-2012, 08:34 PM	#3
obijuan Registered User Join Date: Jun 2012 Location: cibolo tx Posts: 1,033	Re: Axle Identification question betting on a closed knuckle 44.

08-27-2012, 07:38 AM	#4
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	Re: Axle Identification question Behind the axle steering and F350s tells me Dana 70s with closed knuckles... __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS

08-27-2012, 11:42 AM	#5
JPBrecheisen Senior Member Join Date: Jul 2012 Location: Harrisville, New York Posts: 459	Re: Axle Identification question Maybe this will help you get in the ball park? Attached Images __________________ 1960 GMC K1500 LB Fleet Side 1962 GMC K1000 LB Step Side 1988 Chevrolet C2500

08-27-2012, 04:43 PM	#6
PaRedneckRiders Registered User Join Date: Jun 2011 Location: Armagh,PA Posts: 138	Re: Axle Identification question Sorry about the delay on pictures guys been really busy lately. Here are the pictures i have not these are pretty crappy so i will try and get some better ones asap. Also on the pictured axle just to the right of the diff looking at it looks to be the numbers 67680 and on the dash of this truck (still has the original cab although it is junk) is a sticker that says "When ordering service parts please refer to this number 933 . 531" not really sure if that has anything to do with this or not. The diff cover doesnt resemble any of the ones posted but what threw me off to begin with is that both the diff cover can be unbolted as well as the back of the axle. Last edited by PaRedneckRiders; 08-27-2012 at 04:49 PM.

08-27-2012, 06:25 PM	#7
obijuan Registered User Join Date: Jun 2012 Location: cibolo tx Posts: 1,033	Re: Axle Identification question that looks to be a napco conversion.

08-27-2012, 07:09 PM	#8
BLAZERMAN Currently Blazerless Join Date: Apr 2000 Location: St. Joseph Mo. Posts: 4,828	Re: Axle Identification question Thats an interesting truck, would like to see more pics of the whole thing if you have any. Napco did mostly Chevys but I've heard they possibly did a few Fords, back then Howe Coleman were really big into doing Fords and Chevys in the bigger trucks. It should have a tag somewhere with the builders name on it. __________________ 1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C

08-27-2012, 10:08 PM	#9
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	Re: Axle Identification question Napco did 1 ton conversions on 4wds. Not sure on Fords, but I know early GMs couldn't get a 1 ton, had to be thru these guys. Axle looks like an Eaton __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS

08-28-2012, 04:13 PM	#10
V30 mongo Registered User Join Date: Sep 2008 Location: wyoming pennsylvania Posts: 88	Re: Axle Identification question Try Marmon Herrington. They are still in business.

08-28-2012, 11:18 PM	#12
argonaut Senior Member Join Date: Aug 2008 Location: Long Beach, CA Posts: 1,813	Re: Axle Identification question Looks like Eaton to me. Pretty cool. __________________ Jason M. @argonaut62 1972 K5 Blazer CST, Turquoise 1966 K20 Short Fleet Pickup, Big Ugly 1964 C10 Short Fleet, Gertrude 2001 Porsche 911 Carrera 1996 Ford Bronco XLT 1980 Jeep Wagoneer 2008 Honda CBR1000RR 2005 Honda RC51 1981 Honda CB750C No dis-assemble Johnny Five! No dis-assemble!

09-02-2012, 09:29 AM	#13
PaRedneckRiders Registered User Join Date: Jun 2011 Location: Armagh,PA Posts: 138	Re: Axle Identification question Okay so I got some more pictures. Here is the truck itself. It is a Napco conversion it has a tag on the inside of the door. It doesn't have an np205 like i stated before. Here is the front axle i didn't get any pictures of the knuckles or the numbers beside the front diff. These pictures are of the other truck, the first picture were of the truck with no body this is of the truck that runs but they are identical to each other underneath.

09-02-2012, 09:45 AM	#14
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	Re: Axle Identification question Think it's a Dana 20 and def Eaton front. Pretty weird, Ford having pass drop front end.... __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS

09-02-2012, 10:34 AM	#15
68panelman Registered User Join Date: Jan 2011 Location: Delaware and Long Island, New York Posts: 3,458	Re: Axle Identification question The transfer case looks to be in the rockwell family, bigger than the 221 though.

09-02-2012, 03:12 PM	#17
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,469	Re: Axle Identification question Sorry not too familiar with the older stuff.... __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS



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