LSD or POSI? - S-10 Forum
 
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post #1 of 26 Old 12-16-2008, 08:43 PM Thread Starter
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LSD or POSI?

did S-10 or any other GM vehicles (Camaros) come stock with an LSD or POSI that i could go to a junkyard and maybe find a whole rear end for cheap and have it be a bolt in for my 2001 S-10 4.3L 5 Speed RWD?

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post #2 of 26 Old 12-16-2008, 08:54 PM
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Re: LSD or POSI?

yes

-Speedy

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post #3 of 26 Old 12-16-2008, 09:01 PM Thread Starter
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Re: LSD or POSI?

which ones? so i can go try to find one
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post #4 of 26 Old 12-16-2008, 10:10 PM
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Re: LSD or POSI?

s10/blazers with the g80 code
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post #5 of 26 Old 12-16-2008, 10:12 PM
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Re: LSD or POSI?

Or look on ebay for a Torsen Zexel out of an f-body. I got mine for just under $150 shipped. You can't use the rear end though. Just the Posi unit.

Here's some pics to help you know one when you see it:

1998 GMC Jimmy, 2dr/2wd, 4.3L auto: Wynjammer S/C @8psi, Accel 300+ ign box, Taylor 8mm wires, CFM-Tech tb blade, Trans-Go shift kit w/vette servo, cat delete, Hooker Maxflow muffler, Zexel Torsen LSD, Marine intake, 42lb/hr injectors, aeromotive stealth 340 in-tank pump, racetronix fuel pump wiring harness, AEM UEGO W/B A/F gauge, LS1 E-Fans, self tuned w/HPTuners, best 1/8th mile E.T. so far: 2.26 60' 9.55@73mph <<<6psi.

Last edited by 12sws27; 12-16-2008 at 10:19 PM.
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post #6 of 26 Old 12-16-2008, 10:13 PM Thread Starter
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Re: LSD or POSI?

g80 code in the vin number or glovebox?
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post #7 of 26 Old 12-16-2008, 10:24 PM
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Re: LSD or POSI?

glovebox
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post #8 of 26 Old 12-16-2008, 10:30 PM
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Re: LSD or POSI?

some 2wd 4.3's have LSD rear ends called a G80 differential. there are 7.5" ones and 8.5" ones, i dunno which trucks have which, im not sure if there is a 7.5 LSD or not tho. the 4wd's also have G80's but the 4wd axle will prolly be wider pushing your wheels out further so dont forget that. they've been in s10's since the 80's, look em up on ebay, you might even find a nice one with disc brakes


'02 Dime
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post #9 of 26 Old 12-16-2008, 10:51 PM Thread Starter
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Re: LSD or POSI?

sweet thanks, and im looking for a RWD S-10 rear end cuse mine is RWD and also wouldnt the 4x4 rear end have diffrent gears in the back?
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post #10 of 26 Old 12-17-2008, 08:13 PM
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Re: LSD or POSI?

Yeah, they would be geared lower

1998 GMC Jimmy, 2dr/2wd, 4.3L auto: Wynjammer S/C @8psi, Accel 300+ ign box, Taylor 8mm wires, CFM-Tech tb blade, Trans-Go shift kit w/vette servo, cat delete, Hooker Maxflow muffler, Zexel Torsen LSD, Marine intake, 42lb/hr injectors, aeromotive stealth 340 in-tank pump, racetronix fuel pump wiring harness, AEM UEGO W/B A/F gauge, LS1 E-Fans, self tuned w/HPTuners, best 1/8th mile E.T. so far: 2.26 60' 9.55@73mph <<<6psi.
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post #11 of 26 Old 12-17-2008, 08:16 PM
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Re: LSD or POSI?

Find a rear end out of a 2nd gen 2wd 2dr Jimmy/Blazer with a manuel transmission that has the G80 code in the glove box. That should be a 8.5 with 3:42's. I think...

1998 GMC Jimmy, 2dr/2wd, 4.3L auto: Wynjammer S/C @8psi, Accel 300+ ign box, Taylor 8mm wires, CFM-Tech tb blade, Trans-Go shift kit w/vette servo, cat delete, Hooker Maxflow muffler, Zexel Torsen LSD, Marine intake, 42lb/hr injectors, aeromotive stealth 340 in-tank pump, racetronix fuel pump wiring harness, AEM UEGO W/B A/F gauge, LS1 E-Fans, self tuned w/HPTuners, best 1/8th mile E.T. so far: 2.26 60' 9.55@73mph <<<6psi.
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post #12 of 26 Old 12-17-2008, 10:09 PM Thread Starter
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Re: LSD or POSI?

so not from an f-body? if i did get one from an f-body would the LSD unit just fit in the place of my stock open diff and bolt up to my driveshaft the same or would i need a new driveshaft?
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post #13 of 26 Old 12-18-2008, 05:51 AM
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Re: LSD or POSI?

stay away from the s10 posi the gov loc units fail get a unit form an 98 up f body you can get the zexel
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post #14 of 26 Old 12-18-2008, 02:17 PM
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Re: LSD or POSI?

you can get a LSD from a 93-97 f-body

or

posi from 98-02 f-body

i have a 93-97 lsd unit and i have no problems with it

my rides...
--2000 Sonoma highrider Zr2 4.3L/a4 3.73 gears(stock) AWAITING SFA
--1992 s10 x-cab 2wd 2.8L/m5BLOWN UP.....RIP
--1988 s10 blazer 4wd(sold)GONE BUT NOT FORGOTTEN
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post #15 of 26 Old 12-19-2008, 10:26 PM Thread Starter
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Re: LSD or POSI?

Am i able to use the entire rear end from an F-Body or just the posi/LSD unit itself? do they come with disc brakes? What should i look for in terms of codes in Vin numbers or gloveboxes? If i do get one from an F-body would i need to make new mounts for the shocks? Would my driveshaft bolt up well or would i need a new one of thsoe aswell? Sorry if i sound kinda dumb but im looking into this seriously and i just want to make sure i get what will work, thanks alot for all the help so far
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post #16 of 26 Old 12-19-2008, 11:11 PM
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Re: LSD or POSI?

you will need to use your housing and the f body lsd or posi unit and the disk brakes
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post #17 of 26 Old 12-19-2008, 11:47 PM Thread Starter
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Re: LSD or POSI?

what needs to be done to have the disc brakes work? do i need to replace any lines or the master cylinder or anything?
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post #18 of 26 Old 12-20-2008, 09:29 PM
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Re: LSD or POSI?

I have a 2.2 with the G80 code.
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post #19 of 26 Old 12-21-2008, 10:39 PM Thread Starter
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Re: LSD or POSI?

Can i use my ZQ8 rims with the F-body axels?
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post #20 of 26 Old 12-22-2008, 09:26 AM
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Re: LSD or POSI?

You cannot use the "f-body axle." I repeat, you cannot use the "f-body axle."

Only thing you will be looking for is the differential, which is located inside of the rear end housing. Nothing will be changing on the outside.

2000 black S10 Xreme auto v6 - stock on 20's "SLO S10"
2000 white S10 Xtreme auto v8 - unstock "FST S10"
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post #21 of 26 Old 12-24-2008, 05:16 PM Thread Starter
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Re: LSD or POSI?

then how would i get the disc brakes?
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post #22 of 26 Old 12-25-2008, 10:32 PM
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Re: LSD or POSI?

take them off the f-body axle and bolt them on yours. you will have to remove the axles to get the backing plates off.

there is a stickey in this forum about rear brakes

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post #23 of 26 Old 12-30-2008, 02:56 AM Thread Starter
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Re: LSD or POSI?

http://cgi.ebay.ca/7-5-GM-POSI-LOCKER-26-SPLINE-BLAZER-CAMARO-POSITRACTION_W0QQitemZ330297535101QQcmdZViewItemQQ ptZMotors_Car_Truck_Parts_Accessories?hash=item330 297535101&_trksid=p3286.c0.m14&_trkparms=72%3A1215 |66%3A2|65%3A12|39%3A1|240%3A1318

Would that work or is it for to old of models? mine is a 2001
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post #24 of 26 Old 03-05-2014, 11:05 AM
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Re: LSD or POSI?

The 2001 2WD S10 has a 7.6"/10 bolt/28 spline differential. Any posi you get will have to be 7.6"/10 bolt/28 spline to work in your rear housing/axels. You could change the drum brakes to disc as a separate action.
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post #25 of 26 Old 03-05-2014, 12:17 PM
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Re: LSD or POSI?

nice 6 year thread bump. thanks for that tad bit of info that is in a sticky.

FWIW I have a torsen unit in my 94 currently unti I swap to a 8.8 rear end. it has a factory lsd unit with 4.10 gears.

94 GMC Noma 4.3 CPI auto - under construction
01 Trans Am Ws6 - Garage Queen

12 RAM 1500 CC Hem, stock for now, 17.9 mpg on avg.

01 GMC Noma 2.2L auto - SOLD
99 blazer 4dr 2wd - SOLD

GOIN BROKE BUT N STYLE
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post #26 of 26 Old 03-06-2014, 05:12 PM
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Re: LSD or POSI?

Bumped with incorrect information as well as a 2001 4.3/5spd truck would have a 30 spline 8.5" rear in it.

2004 Silverado Z71 ECSB - |Silver Birch Metallic|5.3|Custom Single Exhaust|Method Standards
1993 Mustang LX Hatchback - |Reef Blue|5.0 H.O.|5 Speed|MGW Short Shifter|70MM MAF|MAC Shorty Headers|Pypes O/R X|Spintech Pro Streets|3.55's|
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