FL Posi rear Axle complete - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MAK191 · 01-25-2010, 12:43 AM

I have a posi coil spring rear axle complete from my 70 GMC. This is a late 70 production rear end and it is wider than the 67-70(early). It is the same width as my 72 rear end. I am not sure of the gear ratio, but was told it is probably a 4.11(3.73 see pic below) because the truck was a I6 with 3 on the tree. Comes complete drum to drum but without fluid, as I had to take a picture and check the carrier. 6 lug axles, but if you want 5 lug they may slide right in, not sure on that one. Truck it came from was a county vehicle with 82k and so far all of the mechanical stuff has been in excellent shape. Diff oil was pretty clean and I didn't see any metal flakes. If you need more pictures let me know, all of the stamp/casting marks are clear. I do not want to ship this as of right now because I have no way to haul it anywhere(my truck is apart). It is located near Navarre Florida. Looking to get $350 obo

edit* carrier center pin was removed in the second picture because I pulled the axle shaft to measure it.

MAK191 · 01-25-2010, 01:13 AM

just found out this may actually be a 3.73 as the stamp on the ring gear is 11:41 which I think is 3.73

MAK191 · 01-25-2010, 10:02 AM

Username Shon is first in line for Posi unit if I part it.

**D.PASSMORE** · 01-25-2010, 10:22 AM

Second in line...

BarryB · 01-25-2010, 10:42 AM

yeap it's a 3:73 take 41 divide by 11 you get 3.7272727

burb71 · 01-25-2010, 02:51 PM

I may be wrong but I think that 1-70 is the date code for... Jan, 1970
I have 2 posi units here at home, the codes match the build of the trucks.
This makes it an early built truck.

MAK191 · 01-25-2010, 06:07 PM

Quote:

Originally Posted by burb71

I may be wrong but I think that 1-70 is the date code for... Jan, 1970
I have 2 posi units here at home, the codes match the build of the trucks.
This makes it an early built truck.

Interesting, I will check the actual build date of the truck. I put my 72 axle assembly and this 70 assembly next to each other and they were same drum to drum. I did pull one of the axles out and measured it from end to end with a tape measure and it was roughly 31 3/8 which would make it the wider version right? i just assumed the truck was a late build because of the wider track.

Shon · 01-26-2010, 09:46 PM

You got anyone that would be willing to pallet it up and ship?
I really just need the gear and posi....the housing would be 'scrapped'.

MAK191 · 01-28-2010, 11:31 PM

SOLD to Shon
thanks again

01-25-2010, 12:43 AM	#1
MAK191 Registered User Join Date: Nov 2009 Location: FL Posts: 335	Posi rear Axle complete I have a posi coil spring rear axle complete from my 70 GMC. This is a late 70 production rear end and it is wider than the 67-70(early). It is the same width as my 72 rear end. I am not sure of the gear ratio, but was told it is probably a 4.11(3.73 see pic below) because the truck was a I6 with 3 on the tree. Comes complete drum to drum but without fluid, as I had to take a picture and check the carrier. 6 lug axles, but if you want 5 lug they may slide right in, not sure on that one. Truck it came from was a county vehicle with 82k and so far all of the mechanical stuff has been in excellent shape. Diff oil was pretty clean and I didn't see any metal flakes. If you need more pictures let me know, all of the stamp/casting marks are clear. I do not want to ship this as of right now because I have no way to haul it anywhere(my truck is apart). It is located near Navarre Florida. Looking to get $350 obo edit* carrier center pin was removed in the second picture because I pulled the axle shaft to measure it. Attached Images Last edited by MAK191; 01-25-2010 at 01:17 AM.

01-25-2010, 01:13 AM	#2
MAK191 Registered User Join Date: Nov 2009 Location: FL Posts: 335	Re: Posi rear Axle complete just found out this may actually be a 3.73 as the stamp on the ring gear is 11:41 which I think is 3.73 Attached Images Last edited by MAK191; 01-25-2010 at 01:14 AM.

01-25-2010, 10:02 AM	#3
MAK191 Registered User Join Date: Nov 2009 Location: FL Posts: 335	Re: Posi rear Axle complete Username Shon is first in line for Posi unit if I part it.

01-25-2010, 10:22 AM	#4
D.PASSMORE One of the First Join Date: Jan 2000 Location: St. Augustine,FL. Posts: 4,060	Re: Posi rear Axle complete Second in line... __________________ DAVID PASSMORE ST AUGUSTINE ,FL ZIP 32084 '71 SWB K/10 CUSTOM DELUXE (Chili) '72 BLAZER K/5 Muscle Truck (Mule) '72 LWB K/20 CHEYENNE (Blackie)

01-25-2010, 10:42 AM	#5
BarryB Senior Member Join Date: Jul 2006 Location: Blountville, Tn. Posts: 3,904	Re: Posi rear Axle complete yeap it's a 3:73 take 41 divide by 11 you get 3.7272727 __________________ We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff!

01-25-2010, 02:51 PM	#6
burb71 Active Member Join Date: Oct 2002 Location: Ft. Myers, Fl Posts: 1,716	Re: Posi rear Axle complete I may be wrong but I think that 1-70 is the date code for... Jan, 1970 I have 2 posi units here at home, the codes match the build of the trucks. This makes it an early built truck. Last edited by burb71; 01-25-2010 at 02:53 PM.

01-26-2010, 09:46 PM	#8
Shon Registered User Join Date: Sep 2005 Location: sc Posts: 1,203	Re: Posi rear Axle complete You got anyone that would be willing to pallet it up and ship? I really just need the gear and posi....the housing would be 'scrapped'. __________________ 71 Cheyenne C10 LWB cam'd 6.0/T56 Swap

01-28-2010, 11:31 PM	#9
MAK191 Registered User Join Date: Nov 2009 Location: FL Posts: 335	Re: Posi rear Axle complete SOLD to Shon thanks again



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