is the g80 posi rpo correct??

blacksonoma · 08-22-2008, 01:24 AM

hey guys im new here and got a good ques i recently changed the fluid in my 02 sonoma which is supposed to have the g80 limited slip posi rearend in it,when i pulled the diff cover off it appeared to have a regular diff in it,and did not look anything like a posi at all so last weekend i went to my local junkyard to try to find the correct axle and on 3 other s-10s and blazers i found there with the same g80 option i pulled the covers and they looked the same as mine is gm rippin us off?my truck doesnt seem to act like it has a posi and from all the pics i have seen it should have a clutch set up in it i think or am i wrong and is there something hidden in my diff that i couldnt see

uhlhazard · 08-22-2008, 01:36 AM

It ain't posi. It is a locker. There are no clutches.

They look very much like an open rear to us unfamiliar n00bs but it is very much a locker. If you have a 4x4 I would be glad to trade you for an open rear and some kickass drum brakes to boot!

blacksonoma · 08-22-2008, 01:43 AM

its a 2wd i happened to drop the cover on a 4x4 with the g80 code and that actually looked diff than any of the 2wd ones the 4x4 actually had some kind of locking mechanism in it so its got me all confused

Buddha.. · 08-22-2008, 01:48 AM

blacksonoma · 08-22-2008, 01:55 AM

i dont have a pic and i dont really wanna pull the cover again but once this tropical storm finally goes away i wanna go back to the junkyard

S15vortecpwr · 08-23-2008, 10:55 PM

g80 = junk

***orangesonoma*** · 08-23-2008, 11:58 PM

Quote: Originally Posted by S15vortecpwr

g80 = junk

i agree 100%

***orangesonoma*** · 08-23-2008, 11:59 PM

Quote: Originally Posted by uhlhazard

It ain't posi. It is a locker. There are no clutches.

last i checked it is a limited slip differential...not a locker

Back_N_Black · 08-24-2008, 03:36 PM

why is g80 junk? i have one in my truck and love it.

Merritj2417 · 08-25-2008, 01:08 AM

Quote: Originally Posted by Back_N_Black

why is g80 junk? i have one in my truck and love it.

Wait until it explodes and then ask that question.

Back_N_Black · 08-25-2008, 01:32 PM

why would it explode?

Yogi · 08-25-2008, 01:37 PM

Quote: Originally Posted by Back_N_Black

why would it explode?

Weak design.

Back_N_Black · 08-26-2008, 12:19 AM

yea i get that but i havent heard of any exploding unless someone dogs it. I know its just a 7.5 but were not talking about a v-8 or anything just a 4.3

Merritj2417 · 08-26-2008, 03:16 AM

I've heard of them exploding, but yours may never have any problems.

ZQ8 Blazer · 08-26-2008, 06:07 AM

I've heard of 3 exploding, but the ones that did were all given hell. They're stock and not built for racing, but I have also heard they weren't the best designed as well.

I dunno I've owned 4: 98 fullsize 4wd, 99 fullsize 2wd, 94 fullsize 2wd (salvage yard swap), and the one I have now 98 Blazer 2wd (salvage yard swap). Never had any probs out of them, and the 99 model was given some hell.

I'd rather have a G80 than just the standard one though.

Back_N_Black · 08-26-2008, 06:12 PM

Quote: Originally Posted by ZQ8 Blazer

I'd rather have a G80 than just the standard one though.

exactly

blacksonoma · 08-26-2008, 10:28 PM

somethin is not right cause the 4 g80 covers i pulled seemed to be just standard diffs i think gm is screwin us cause if i tore 4 open that were supposed to be scecial and they werent then somethin is up

Mikz86TA · 08-27-2008, 02:25 AM

1. Does it lay down 2 stripes if you step on it hard? LOL

2. The G80 (gov-loc) isnt junk but its true that its not designed for racing. Get a zexel if you want to race it.

3. The G80 Gov-Loc came out somewhere around the late 90s. Earlier trucks with G80 RPO were a auburn-based limited slip diffy. My 3rd Gen TA had a G80 RPO and it was a LimitedSlip unit.

blacksonoma · 08-27-2008, 06:34 PM

the rpo specifies a limited slip posi if its a locker than the whole rpo would be wrong when i pulled the cover on a 4x4 the spider gears had some kinda locking unit in it but it wasnt on the 2wd at all

S15vortecpwr · 08-27-2008, 10:46 PM

that locking unit that you swwn was the locking part of the diff. that is the part that breaks.

http://cgi.ebay.com/ebaymotors/GM-7-...spagenameZWDVW

here is a pic of what they look like. it is just a bad design.

Yogi · 08-28-2008, 12:39 PM

Quote: Originally Posted by S15vortecpwr

that locking unit that you swwn was the locking part of the diff. that is the part that breaks.

http://cgi.ebay.com/ebaymotors/GM-7-...spagenameZWDVW

here is a pic of what they look like. it is just a bad design.

I don't see how anybody could confuse that with an open diff. Sure is a lot of "open space" in that carrier! No wonder that they break!

S15 - Where did you get your Zexel-Torsen unit?

blacksonoma · 08-28-2008, 06:54 PM

Quote: Originally Posted by S15vortecpwr

that locking unit that you swwn was the locking part of the diff. that is the part that breaks.

http://cgi.ebay.com/ebaymotors/GM-7-...spagenameZWDVW

here is a pic of what they look like. it is just a bad design.

ya the 4x4 def had that diff in it but i still dont see where there is any kind of limited slip posi kind of unit in the 2wd i think gm is screwin us,if you look up the rear end parts in the gm system they have a diff that has all the clutches and all that other crap in it which should be the limited slip i think we got screwed

S15vortecpwr · 08-28-2008, 10:10 PM

i got mine from ebay. Mine was cheaper due to it being a 2-series instead of a 3 series. I just bought the 2-series gears to go on it, since the ring gear spacer is like 100 bucks.

I took my time, before i purchased one. I know with shipping that it was less than 100.00. I was several and even did a search on ones that sold to see what they were selling for. At the time the 3-series was in the high 200. It has been about 3 yrs or more since i bought it.

jtcfanof3 · 08-31-2008, 06:20 PM

Quote: Originally Posted by Mikz86TA

3. The G80 Gov-Loc came out somewhere around the late 90s.

Actually,my 1989 4x4 blazer has the G80 dif in it,so they come out erlier then the late 90's.

Yogi · 08-31-2008, 06:58 PM

Quote: Originally Posted by S15vortecpwr

i got mine from ebay. Mine was cheaper due to it being a 2-series instead of a 3 series. I just bought the 2-series gears to go on it, since the ring gear spacer is like 100 bucks.

I took my time, before i purchased one. I know with shipping that it was less than 100.00. I was several and even did a search on ones that sold to see what they were selling for. At the time the 3-series was in the high 200. It has been about 3 yrs or more since i bought it.

HELLUVA deal!!

ExtCab96S_Dime · 08-31-2008, 07:21 PM

Quote: Originally Posted by jtcfanof3

Actually,my 1989 4x4 blazer has the G80 dif in it,so they come out erlier then the late 90's.

Did you read the rest of the sentence you quoted?

jtcfanof3 · 08-31-2008, 07:54 PM

Quote: Originally Posted by ExtCab96S_Dime

Did you read the rest of the sentence you quoted?

Yes I did,I thought you ment that the earlier trucks as in the late 90's,not the late 80's because we are discussing the newer 2nd gens.
Just a mis read I guess.

uhlhazard · 09-21-2008, 05:34 PM

orangesonoma, the rpo g80 in an s10 is a locker, not limited. This is a fact not an opinion, do more research before contradicting someone next time.

AFAIK all s10 rpo g80 is an eaton gov-loc a.k.a. grenade locker.

They don't slip, they lock. GM's CARS rpo's are referencing a different and confusing g80 that from what I have read is a limited slip.

Fortunately for us, the confusion vanishes when all s10's and s15's are trucks which means we all have lockers. (stock g80's that is).

There, don't take my word for it though. Try google.

Yogi · 09-21-2008, 05:55 PM

I googled "Eaton Gov-Lock" and found this on Eaton's website:

Mechanical Locking Differential
The Eaton mechanical locking differential was the first to be offered as an option to pickup drivers and today it is known around the world simply by the GM option code G80. This automatic unit, available as standard and optional equipment for rear drive and 4-wheel drive vehicles, makes traction problems a thing of the past. The Locker makes towing large boats and campers a breeze. Be sure to ask your dealer if your vehicle has an Eaton differential.

tt85_GM · 09-22-2008, 01:48 AM

For you winter driving guys...it's better to have an open diff on icy roads. A locker can spin your truck around in 5 seconds.

20twinz · 09-29-2008, 10:54 PM

Quote: Originally Posted by tt85_GM

For you winter driving guys...it's better to have an open diff on icy roads. A locker can spin your truck around in 5 seconds.

Thats the fun part!

BTE · 09-30-2008, 10:56 PM

Quote:

For you winter driving guys...it's better to have an open diff on icy roads. A locker can spin your truck around in 5 seconds.

It was pretty scary the first time I drove the truck in the snow. You don't even need to try.

08-22-2008, 01:24 AM	#1
blacksonoma Registered User Join Date: Aug 2008 Posts: 18 Location: florida User is: OffLine	is the g80 posi rpo correct?? hey guys im new here and got a good ques i recently changed the fluid in my 02 sonoma which is supposed to have the g80 limited slip posi rearend in it,when i pulled the diff cover off it appeared to have a regular diff in it,and did not look anything like a posi at all so last weekend i went to my local junkyard to try to find the correct axle and on 3 other s-10s and blazers i found there with the same g80 option i pulled the covers and they looked the same as mine is gm rippin us off?my truck doesnt seem to act like it has a posi and from all the pics i have seen it should have a clutch set up in it i think or am i wrong and is there something hidden in my diff that i couldnt see
	[Reply w/Quote]

08-22-2008, 01:36 AM	#2
uhlhazard Aquatic Goat Farmer Age: 23 Join Date: Oct 2007 Posts: 220 Location: Houston-aka Northern Mexico User is: OffLine	Re: is the g80 posi rpo correct?? It ain't posi. It is a locker. There are no clutches. They look very much like an open rear to us unfamiliar n00bs but it is very much a locker. If you have a 4x4 I would be glad to trade you for an open rear and some kickass drum brakes to boot!
	[Reply w/Quote]

08-22-2008, 01:43 AM	#3
blacksonoma Registered User Join Date: Aug 2008 Posts: 18 Location: florida User is: OffLine	Re: is the g80 posi rpo correct?? its a 2wd i happened to drop the cover on a 4x4 with the g80 code and that actually looked diff than any of the 2wd ones the 4x4 actually had some kind of locking mechanism in it so its got me all confused
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08-22-2008, 01:48 AM	#4
Buddha.. Happy with ugly truck Age: 23 Join Date: Aug 2008 Posts: 297 Location: Little Falls, MN User is: OffLine	Re: is the g80 posi rpo correct?? pic?
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08-22-2008, 01:55 AM	#5
blacksonoma Registered User Join Date: Aug 2008 Posts: 18 Location: florida User is: OffLine	Re: is the g80 posi rpo correct?? i dont have a pic and i dont really wanna pull the cover again but once this tropical storm finally goes away i wanna go back to the junkyard
	[Reply w/Quote]


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08-23-2008, 10:55 PM	#6
S15vortecpwr goin broke but n style Age: 28 Join Date: Jan 2007 Posts: 2,425 Location: Alabama User is: OffLine	Re: is the g80 posi rpo correct?? g80 = junk
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08-23-2008, 11:58 PM	#7
*orangesonoma* registered s10 offender Age: 30 Join Date: Oct 2002 Posts: 37,065 Location: Indian Trail, NC User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by S15vortecpwr g80 = junk i agree 100%
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08-23-2008, 11:59 PM	#8
*orangesonoma* registered s10 offender Age: 30 Join Date: Oct 2002 Posts: 37,065 Location: Indian Trail, NC User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by uhlhazard It ain't posi. It is a locker. There are no clutches. last i checked it is a limited slip differential...not a locker
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08-24-2008, 03:36 PM	#9
Back_N_Black No G/F=More Cash Moneys Age: 19 Join Date: Mar 2007 Posts: 975 Location: Mt. Washington, Ky User is: OffLine	Re: is the g80 posi rpo correct?? why is g80 junk? i have one in my truck and love it.
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08-25-2008, 01:08 AM	#10
Merritj2417 ________________ Age: 23 Join Date: Dec 2007 Posts: 5,670 Location: King, NC User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by Back_N_Black why is g80 junk? i have one in my truck and love it. Wait until it explodes and then ask that question.
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08-25-2008, 01:32 PM	#11
Back_N_Black No G/F=More Cash Moneys Age: 19 Join Date: Mar 2007 Posts: 975 Location: Mt. Washington, Ky User is: OffLine	Re: is the g80 posi rpo correct?? why would it explode?
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08-25-2008, 01:37 PM	#12
Yogi Registered (Ab) User Join Date: Feb 2008 Posts: 3,683 Location: League City, TX (Houston) User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by Back_N_Black why would it explode? Weak design.
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08-26-2008, 12:19 AM	#13
Back_N_Black No G/F=More Cash Moneys Age: 19 Join Date: Mar 2007 Posts: 975 Location: Mt. Washington, Ky User is: OffLine	Re: is the g80 posi rpo correct?? yea i get that but i havent heard of any exploding unless someone dogs it. I know its just a 7.5 but were not talking about a v-8 or anything just a 4.3
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08-26-2008, 03:16 AM	#14
Merritj2417 ________________ Age: 23 Join Date: Dec 2007 Posts: 5,670 Location: King, NC User is: OffLine	Re: is the g80 posi rpo correct?? I've heard of them exploding, but yours may never have any problems.
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10-01-2008, 02:07 PM	#33
nimrod8560 needs to be lower... Join Date: Jul 2008 Posts: 148 Location: The Hoosier State User is: OffLine

08-26-2008, 06:07 AM	#15
ZQ8 Blazer This Friday is Age: 25 Join Date: Jul 2004 Posts: 4,245 Location: Western, Ky User is: OffLine	Re: is the g80 posi rpo correct?? I've heard of 3 exploding, but the ones that did were all given hell. They're stock and not built for racing, but I have also heard they weren't the best designed as well. I dunno I've owned 4: 98 fullsize 4wd, 99 fullsize 2wd, 94 fullsize 2wd (salvage yard swap), and the one I have now 98 Blazer 2wd (salvage yard swap). Never had any probs out of them, and the 99 model was given some hell. I'd rather have a G80 than just the standard one though.
	[Reply w/Quote]

08-26-2008, 06:12 PM	#16
Back_N_Black No G/F=More Cash Moneys Age: 19 Join Date: Mar 2007 Posts: 975 Location: Mt. Washington, Ky User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by ZQ8 Blazer I'd rather have a G80 than just the standard one though. exactly
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08-26-2008, 10:28 PM	#17
blacksonoma Registered User Join Date: Aug 2008 Posts: 18 Location: florida User is: OffLine	Re: is the g80 posi rpo correct?? somethin is not right cause the 4 g80 covers i pulled seemed to be just standard diffs i think gm is screwin us cause if i tore 4 open that were supposed to be scecial and they werent then somethin is up
	[Reply w/Quote]

08-27-2008, 02:25 AM	#18
Mikz86TA Registered User Age: 33 Join Date: Jan 2007 Posts: 696 Location: Tallahassee, Florida User is: OffLine	Re: is the g80 posi rpo correct?? 1. Does it lay down 2 stripes if you step on it hard? LOL 2. The G80 (gov-loc) isnt junk but its true that its not designed for racing. Get a zexel if you want to race it. 3. The G80 Gov-Loc came out somewhere around the late 90s. Earlier trucks with G80 RPO were a auburn-based limited slip diffy. My 3rd Gen TA had a G80 RPO and it was a LimitedSlip unit.
	[Reply w/Quote]

08-27-2008, 06:34 PM	#19
blacksonoma Registered User Join Date: Aug 2008 Posts: 18 Location: florida User is: OffLine	Re: is the g80 posi rpo correct?? the rpo specifies a limited slip posi if its a locker than the whole rpo would be wrong when i pulled the cover on a 4x4 the spider gears had some kinda locking unit in it but it wasnt on the 2wd at all
	[Reply w/Quote]

08-27-2008, 10:46 PM	#20
S15vortecpwr goin broke but n style Age: 28 Join Date: Jan 2007 Posts: 2,425 Location: Alabama User is: OffLine	Re: is the g80 posi rpo correct?? that locking unit that you swwn was the locking part of the diff. that is the part that breaks. http://cgi.ebay.com/ebaymotors/GM-7-...spagenameZWDVW here is a pic of what they look like. it is just a bad design.
	[Reply w/Quote]

08-28-2008, 12:39 PM	#21
Yogi Registered (Ab) User Join Date: Feb 2008 Posts: 3,683 Location: League City, TX (Houston) User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by S15vortecpwr that locking unit that you swwn was the locking part of the diff. that is the part that breaks. http://cgi.ebay.com/ebaymotors/GM-7-...spagenameZWDVW here is a pic of what they look like. it is just a bad design. I don't see how anybody could confuse that with an open diff. Sure is a lot of "open space" in that carrier! No wonder that they break! S15 - Where did you get your Zexel-Torsen unit?
	[Reply w/Quote]

08-28-2008, 06:54 PM	#22
blacksonoma Registered User Join Date: Aug 2008 Posts: 18 Location: florida User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by S15vortecpwr that locking unit that you swwn was the locking part of the diff. that is the part that breaks. http://cgi.ebay.com/ebaymotors/GM-7-...spagenameZWDVW here is a pic of what they look like. it is just a bad design. ya the 4x4 def had that diff in it but i still dont see where there is any kind of limited slip posi kind of unit in the 2wd i think gm is screwin us,if you look up the rear end parts in the gm system they have a diff that has all the clutches and all that other crap in it which should be the limited slip i think we got screwed
	[Reply w/Quote]

08-28-2008, 10:10 PM	#23
S15vortecpwr goin broke but n style Age: 28 Join Date: Jan 2007 Posts: 2,425 Location: Alabama User is: OffLine	Re: is the g80 posi rpo correct?? i got mine from ebay. Mine was cheaper due to it being a 2-series instead of a 3 series. I just bought the 2-series gears to go on it, since the ring gear spacer is like 100 bucks. I took my time, before i purchased one. I know with shipping that it was less than 100.00. I was several and even did a search on ones that sold to see what they were selling for. At the time the 3-series was in the high 200. It has been about 3 yrs or more since i bought it.
	[Reply w/Quote]

08-31-2008, 06:20 PM	#24
jtcfanof3 Fan of the S-10 Age: 32 Join Date: Aug 2005 Posts: 2,529 Location: Sullivan Illinois User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by Mikz86TA 3. The G80 Gov-Loc came out somewhere around the late 90s. Actually,my 1989 4x4 blazer has the G80 dif in it,so they come out erlier then the late 90's.
	[Reply w/Quote]

08-31-2008, 06:58 PM	#25
Yogi Registered (Ab) User Join Date: Feb 2008 Posts: 3,683 Location: League City, TX (Houston) User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by S15vortecpwr i got mine from ebay. Mine was cheaper due to it being a 2-series instead of a 3 series. I just bought the 2-series gears to go on it, since the ring gear spacer is like 100 bucks. I took my time, before i purchased one. I know with shipping that it was less than 100.00. I was several and even did a search on ones that sold to see what they were selling for. At the time the 3-series was in the high 200. It has been about 3 yrs or more since i bought it. HELLUVA deal!!
	[Reply w/Quote]

08-31-2008, 07:21 PM	#26
ExtCab96S_Dime Wannabe Dragger Age: 21 Join Date: Jun 2005 Posts: 1,210 Location: Neenah, Wisconsin User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by jtcfanof3 Actually,my 1989 4x4 blazer has the G80 dif in it,so they come out erlier then the late 90's. Did you read the rest of the sentence you quoted?
	[Reply w/Quote]

08-31-2008, 07:54 PM	#27
jtcfanof3 Fan of the S-10 Age: 32 Join Date: Aug 2005 Posts: 2,529 Location: Sullivan Illinois User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by ExtCab96S_Dime Did you read the rest of the sentence you quoted? Yes I did,I thought you ment that the earlier trucks as in the late 90's,not the late 80's because we are discussing the newer 2nd gens. Just a mis read I guess.
	[Reply w/Quote]

09-21-2008, 05:34 PM	#28
uhlhazard Aquatic Goat Farmer Age: 23 Join Date: Oct 2007 Posts: 220 Location: Houston-aka Northern Mexico User is: OffLine	Re: is the g80 posi rpo correct?? orangesonoma, the rpo g80 in an s10 is a locker, not limited. This is a fact not an opinion, do more research before contradicting someone next time. AFAIK all s10 rpo g80 is an eaton gov-loc a.k.a. grenade locker. They don't slip, they lock. GM's CARS rpo's are referencing a different and confusing g80 that from what I have read is a limited slip. Fortunately for us, the confusion vanishes when all s10's and s15's are trucks which means we all have lockers. (stock g80's that is). There, don't take my word for it though. Try google.
	[Reply w/Quote]

09-21-2008, 05:55 PM	#29
Yogi Registered (Ab) User Join Date: Feb 2008 Posts: 3,683 Location: League City, TX (Houston) User is: OffLine	Re: is the g80 posi rpo correct?? I googled "Eaton Gov-Lock" and found this on Eaton's website: Mechanical Locking Differential The Eaton mechanical locking differential was the first to be offered as an option to pickup drivers and today it is known around the world simply by the GM option code G80. This automatic unit, available as standard and optional equipment for rear drive and 4-wheel drive vehicles, makes traction problems a thing of the past. The Locker makes towing large boats and campers a breeze. Be sure to ask your dealer if your vehicle has an Eaton differential. Last edited by Yogi : 09-21-2008 at 05:58 PM.
	[Reply w/Quote]

09-22-2008, 01:48 AM	#30
tt85_GM I AM CANADIAN Age: 23 Join Date: Feb 2006 Posts: 4,227 Location: Ont. Canada User is: OffLine	Re: is the g80 posi rpo correct?? For you winter driving guys...it's better to have an open diff on icy roads. A locker can spin your truck around in 5 seconds.
	[Reply w/Quote]

09-29-2008, 10:54 PM	#31
20twinz Registered User Age: 21 Join Date: Sep 2007 Posts: 126 Location: User is: OffLine	Re: is the g80 posi rpo correct?? Quote: Originally Posted by tt85_GM For you winter driving guys...it's better to have an open diff on icy roads. A locker can spin your truck around in 5 seconds. Thats the fun part!
	[Reply w/Quote]

09-30-2008, 10:56 PM	#32
BTE I have no idea Join Date: Jul 2007 Posts: 601 Location: Amherst User is: OffLine	Re: is the g80 posi rpo correct?? Quote: For you winter driving guys...it's better to have an open diff on icy roads. A locker can spin your truck around in 5 seconds. It was pretty scary the first time I drove the truck in the snow. You don't even need to try.
	[Reply w/Quote]