Got it from behind on ebay - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71-4x4-bb482 · 04-07-2002, 10:35 AM

bought a posi diff as for corp 12 bolt, advertised as corp 12 bolt, everyone thought it was corp twelve,buttttttttt guess what, its not, evrything looks corp 12 bolt but its a half inch too wide to fit into housing .Im workin on a pic any ideas Thanks

**fine69** · 04-07-2002, 11:16 AM

Have you tried to return it? If something is not as described you should ask the seller to take it back first. Explain to them what the problem is. I have done this and had some success. Got a link to the auction? Someone here should be able to tell you what it is for.

71-4x4-bb482 · 04-07-2002, 11:23 AM

I plan on contacting the guy I got it from, but i dont expect much luck. I,ll probly get a id on it and resell it

72chevyLWB · 04-07-2002, 01:05 PM

Is it for a regular 12 bolt truck rear end? If it is check and see if it is a 4 series. I would be interested. E-mail me if you want to do that.

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72 Chevy C/10
87 Chevy Silverado 4X4
www.geocities.com/chevylwb/chevylwb.html
Aberdeen South Dakota

**Classic Heartbeat** · 04-07-2002, 01:16 PM

From what I have gathered from all the information I have seen is that the possi requires a larger housing than the non-possi. So if you are trying to put a possi into a housing that is a non-possi housing it won't fit. I am not an expert on rear ends though, this is just what I have heard. WES www.ClassicHeartbeat.com

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71-4x4-bb482 · 04-07-2002, 01:56 PM

Wes you described my problem to a tee, I have a non posi rear,trying to install a posi unit into it I thought the width differance was internal in the diff, not in the rear housing, ooooohhh man

mooneyes · 04-07-2002, 02:20 PM

the last truck i had i changed a non posi rear to a posi using a factory posi unit..had no trouble..so now u got me interested in what that thing is for

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70 short step from vegas woo hoo !!!Ken Lyons Slippery Rock PA yahoo messenger:mooneyes4b "things always look different from higher up" Clint Eastwood (fist full of dollars)

texnician01 · 04-07-2002, 11:06 PM

Any Carrier for a 1/2 ton rearend will fit in any half ton rear end. Posi or not. i'm guessing but You may have a 3/4 ton posi. I havn't messed with the 3/4 ton's but I just did all kinds of work on my half ton and swapped between any GM 12 bolt to any other GM 12 bolt. Until somewhere around 86-88? all of the half ton rear axles were the same guts 2 or 4 wd.

texnician01 · 04-11-2002, 04:58 PM

ttt

texnician01 · 04-12-2002, 10:43 AM

I've done some checking around and havn't found much. I'm starting to wonder though, could this be a dodge carrier? Eaton surely made carriers for companies other than GM right? just an Idea still checking on the casting ##'s.

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1969 C-10 292 I-6 4 spd in the middle of a restoration. going to get a 327 and 3.07 gears but keeping all of the original parts so I can put it back to original later on down the road.
55 chevy 4 door 150
47 Willys CJ-2A

rustfree · 04-12-2002, 10:53 AM

here's my 2 cents..I have heard that there are two sizres of housing dependent on the ratio going in. The diffs for 3.07 up to 3.73 (I believe) is smaller than a diff for the 3.90 to 5.12 gears..at least that is what I've heard. BTW I had a 3.42 posi put into my non-posi 3.07 without a problem

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72 swb cheyenne super 350/350
69 cst20 BB longhorn

Blazer1970 · 04-12-2002, 11:45 AM

The carrier is different for high and low gear ratios, but all 12 bolt truck housings are the same, and any carrier will fit in any housing, posi or not. The difference in the high and low ratio carriers is that the mount for the ring gear is offset more on the higher ratios to allow for the bigger diameter pinion gear.

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Tim

texnician01 · 04-12-2002, 04:59 PM

http://pic5.picturetrail.com/VOL83/5...66/8792565.jpg
http://pic5.picturetrail.com/VOL83/5...66/8792572.jpg

lets see if this works

good works like a charm now you can see the difference in the carriers. the one on the left is a 12bolt chevy truck carrier and the one on the right is the one in question.

[This message has been edited by texnician01 (edited April 12, 2002).]

[This message has been edited by texnician01 (edited April 12, 2002).]

[This message has been edited by texnician01 (edited April 12, 2002).]

04-07-2002, 10:35 AM	#1
71-4x4-bb482 Registered User Join Date: Mar 2002 Location: donnellson,Ia. USA Posts: 25	Got it from behind on ebay bought a posi diff as for corp 12 bolt, advertised as corp 12 bolt, everyone thought it was corp twelve,buttttttttt guess what, its not, evrything looks corp 12 bolt but its a half inch too wide to fit into housing .Im workin on a pic any ideas Thanks

04-07-2002, 11:16 AM	#2
fine69 Senior Member Join Date: Dec 1999 Location: Urbana,Ohio,USA Posts: 4,618	Have you tried to return it? If something is not as described you should ask the seller to take it back first. Explain to them what the problem is. I have done this and had some success. Got a link to the auction? Someone here should be able to tell you what it is for. __________________ 2008 Chevy HHR 1/2 panel. 1949 Chevy Panel truck(just sittin, waiting) Board member #6

04-07-2002, 01:05 PM	#4
72chevyLWB Got 20's???? Join Date: Oct 2001 Location: Aberdeen SD Posts: 1,451	Is it for a regular 12 bolt truck rear end? If it is check and see if it is a 4 series. I would be interested. E-mail me if you want to do that. ------------------ 72 Chevy C/10 87 Chevy Silverado 4X4 www.geocities.com/chevylwb/chevylwb.html Aberdeen South Dakota __________________ 99 Silverado Ex-Cab 2wd, Bagged&WhippleCharged 02 Sierra Ex-Cab 4wd 2500 HD The 72 went down the road.

04-07-2002, 01:16 PM	#5
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,766	From what I have gathered from all the information I have seen is that the possi requires a larger housing than the non-possi. So if you are trying to put a possi into a housing that is a non-possi housing it won't fit. I am not an expert on rear ends though, this is just what I have heard. WES www.ClassicHeartbeat.com ------------------ Click (Here) to visit our on-line catolog. E-mail me WEHEPP@attbi.com 72 BB Chevy Blazer 72 BB Chevy Short Fleet 72 SB 3/4 Ton 4X4 72 SB 1/2 Ton SWB 4X4 70 BB Chevy Short Step 70 SB Chevy Short Fleet 69 SB Chevy Short Step 68 SB Chevy Short Step 68 BB GMC Long Fleet 67 GMC 1/2 ton Panel "Founder" Classic Heartbeat Pickup Club Olympia, Washington's "Home For Wayword Chevys" www.ClassicHeartbeat.com __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

04-07-2002, 02:20 PM	#7
mooneyes Registered User Join Date: Jan 2002 Location: Slippery Rock PA USA Posts: 1,692	the last truck i had i changed a non posi rear to a posi using a factory posi unit..had no trouble..so now u got me interested in what that thing is for ------------------ 70 short step from vegas woo hoo !!!Ken Lyons Slippery Rock PA yahoo messenger:mooneyes4b "things always look different from higher up" Clint Eastwood (fist full of dollars) __________________ Ken Lyons, Slippery rock pa 68 short step 327 t10 4 gear 72 2wd blazer project 70 lwb 305/700r driver 78 caprice project 02 cavalier D.D ( hate it!!)

04-07-2002, 11:23 AM	#3
71-4x4-bb482 Registered User Join Date: Mar 2002 Location: donnellson,Ia. USA Posts: 25	I plan on contacting the guy I got it from, but i dont expect much luck. I,ll probly get a id on it and resell it

04-07-2002, 01:56 PM	#6
71-4x4-bb482 Registered User Join Date: Mar 2002 Location: donnellson,Ia. USA Posts: 25	Wes you described my problem to a tee, I have a non posi rear,trying to install a posi unit into it I thought the width differance was internal in the diff, not in the rear housing, ooooohhh man

04-07-2002, 11:06 PM	#8
texnician01 Senior Member Join Date: Mar 2002 Location: 12 Miles South of Des Moines, Iowa Posts: 359	Any Carrier for a 1/2 ton rearend will fit in any half ton rear end. Posi or not. i'm guessing but You may have a 3/4 ton posi. I havn't messed with the 3/4 ton's but I just did all kinds of work on my half ton and swapped between any GM 12 bolt to any other GM 12 bolt. Until somewhere around 86-88? all of the half ton rear axles were the same guts 2 or 4 wd. __________________ 69 C-10, 340HP 327 55 chevy 4 door 150 47 Willys CJ-2A 05 Harley Night Train 06 1200 Sportster (Wife's bike) 70 Honda CL350 OIF2 & OIF7 Veteran Nathan & Tiffany

04-11-2002, 04:58 PM	#9
texnician01 Senior Member Join Date: Mar 2002 Location: 12 Miles South of Des Moines, Iowa Posts: 359	ttt __________________ 69 C-10, 340HP 327 55 chevy 4 door 150 47 Willys CJ-2A 05 Harley Night Train 06 1200 Sportster (Wife's bike) 70 Honda CL350 OIF2 & OIF7 Veteran Nathan & Tiffany

04-12-2002, 10:43 AM	#10
texnician01 Senior Member Join Date: Mar 2002 Location: 12 Miles South of Des Moines, Iowa Posts: 359	I've done some checking around and havn't found much. I'm starting to wonder though, could this be a dodge carrier? Eaton surely made carriers for companies other than GM right? just an Idea still checking on the casting ##'s. ------------------ 1969 C-10 292 I-6 4 spd in the middle of a restoration. going to get a 327 and 3.07 gears but keeping all of the original parts so I can put it back to original later on down the road. 55 chevy 4 door 150 47 Willys CJ-2A __________________ 69 C-10, 340HP 327 55 chevy 4 door 150 47 Willys CJ-2A 05 Harley Night Train 06 1200 Sportster (Wife's bike) 70 Honda CL350 OIF2 & OIF7 Veteran Nathan & Tiffany

04-12-2002, 10:53 AM	#11
rustfree Registered User Join Date: May 2001 Location: Warren, OR , USA Posts: 166	here's my 2 cents..I have heard that there are two sizres of housing dependent on the ratio going in. The diffs for 3.07 up to 3.73 (I believe) is smaller than a diff for the 3.90 to 5.12 gears..at least that is what I've heard. BTW I had a 3.42 posi put into my non-posi 3.07 without a problem ------------------ 72 swb cheyenne super 350/350 69 cst20 BB longhorn __________________ 72 swb cheyenne super 350/350 69 cst20 BB longhorn Warren, OR

04-12-2002, 11:45 AM	#12
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	The carrier is different for high and low gear ratios, but all 12 bolt truck housings are the same, and any carrier will fit in any housing, posi or not. The difference in the high and low ratio carriers is that the mount for the ring gear is offset more on the higher ratios to allow for the bigger diameter pinion gear. ------------------ Tim __________________ Tim

04-12-2002, 04:59 PM	#13
texnician01 Senior Member Join Date: Mar 2002 Location: 12 Miles South of Des Moines, Iowa Posts: 359	http://pic5.picturetrail.com/VOL83/5...66/8792565.jpg http://pic5.picturetrail.com/VOL83/5...66/8792572.jpg lets see if this works good works like a charm now you can see the difference in the carriers. the one on the left is a 12bolt chevy truck carrier and the one on the right is the one in question. [This message has been edited by texnician01 (edited April 12, 2002).] [This message has been edited by texnician01 (edited April 12, 2002).] [This message has been edited by texnician01 (edited April 12, 2002).] __________________ 69 C-10, 340HP 327 55 chevy 4 door 150 47 Willys CJ-2A 05 Harley Night Train 06 1200 Sportster (Wife's bike) 70 Honda CL350 OIF2 & OIF7 Veteran Nathan & Tiffany



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