Auburn Limited Slip - Experience/Recomendations - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dingo_dan_22 · 02-21-2008, 10:26 AM

I ordered an Eaton Posi from the local speedshop but his supplier was sold out so they sent me the Auburn Pro-Series Limited Slip. The Auburn unit was listed as $100 dollars more but they gave it to me for the same price. I have a 12 bolt rear end and will be installing 3.73's.

Anyone have experience with one?

Should I return the Auburn and get the Eaton?

68GMCCustom · 02-21-2008, 10:55 AM

The Eaton is rebuildable.....is the Auburn?

Custom 68 · 02-21-2008, 10:57 AM

watching this one. I am about ready to do the same swap...

chevy72blu · 02-21-2008, 11:38 AM

I have the Auburn pro and I LOVE it. Lotsa folks will talk about how the unit isnt rebuildable (uses a cone drive as opposed to a clutch pack), which it isnt. However, I spent quite a while working at the best drive line shop in Las Vegas and they consistently recommend auburn. Auburn has a replacement program in which you send them your broken unit and they send you a new one (I cant tell you the price of this, call them).

From all that I have heard, the Auburn pro will greatly outlast the Eaton. Mine has spent a lot of time launching on 14.50 inch slicks without a complaint.

**special-K** · 02-21-2008, 06:35 PM

I ran an Auburn posi in my`90 Blazer and really liked it.

Number98 · 02-21-2008, 08:52 PM

I went with the auburn pro in mine based off many recomendations from folks who know..... Obviously I have nothing to report since my truck is not on the road as of yet....

soon.... very soon.....

Ozark Tim · 02-22-2008, 05:53 AM

I have the Auburn differential in one of my 1/2 ton two wheel drive trucks with 3:07 ratio. I think it was the lesser series as I am just a jaunt around town and now and then go fishing with it kind of old truck driver.
I really like that it doesnt chatter or act like a positraction under normal driving but seems to give traction to both wheels when I am on a slick boat ramp or trying to enter a busy road without lighting up the right rear tire.
Nothing to install! Remove the old unit, and swap the ring gear onto the new unit. I'd buy and press on new bearings though.
Someone told me the new material used on the clutches of the Eaton units are not prone to chatter either for what it is worth.
OT

Fastfun · 02-22-2008, 06:32 AM

I have had a Auburn Posi in my 72 350 automatic for about 3 years and no chatter or whinning. I am running 3:48 rear gears

chevy72blu · 02-22-2008, 07:51 AM

glad to see you guys are all happy with Auburn. A few years ago on the board I seemed to be the only one who liked em'. Im sure some Eaton lovers will come in here soon enough

silverado84355 · 02-22-2008, 08:36 AM

I had an auburn in my 84 swb 4x4 and loved it, took me to the same places my buddies rigs with lockers would go!

**special-K** · 02-22-2008, 11:39 AM

I just sold my Blazer this summer.I had the Auburn in there since`99 and ran 12.50/33s on 10" rims.No disappointments here.

dingo_dan_22 · 02-22-2008, 01:24 PM

I took the differential to a guy in town who was highly recomended. He originally quoted $110 for the install, but now I'm having him swap guts from a 67' axle into the 71' axle so I won't need the axles re-drilled. He's also replacing the bushings in the control arms and track bar. I'll let you know the total bill. Thanks for the replies!

dingo_dan_22 · 02-22-2008, 01:28 PM

I bought an intall kit with the unit. It has all new shims, bearings, and hardware.

**'68OrangeSunshine** · 02-22-2008, 06:04 PM

I had an Auburn on the 3.73 12-Bolt rear in my '67 K/10 Suburban. I liked it. I have Eaton's in the rear ends of my '68 C/10 [transplant] and '71 Jimmy [factory]. I'd be hard pressed to notice any difference between the makes.

**Already Gone** · 02-22-2008, 07:11 PM

Quote:

Originally Posted by dingo_dan_22

I ordered an Eaton Posi from the local speedshop but his supplier was sold out so they sent me the Auburn Pro-Series Limited Slip. The Auburn unit was listed as $100 dollars more but they gave it to me for the same price. I have a 12 bolt rear end and will be installing 3.73's.

Anyone have experience with one?

Should I return the Auburn and get the Eaton?

Are you in Saskatoon? Who did you buy the Auburn from?

cameeks · 02-23-2008, 12:39 AM

I ran that unit for years in my old Camaro. Also my friend had one in his '83 Monty. It was a 7.5" differential and he sprayed the hell out of it for over a year and his daily driver. Both lasted with no problems

dingo_dan_22 · 02-23-2008, 12:09 PM

I bought the unit from Queen City Performance in Regina.

stope4 · 02-24-2008, 07:10 PM

I've had both Auburn and Eaton. Couldn't really tell the difference but I've never severely tested either. Sometimes the Auburn made a slight thud noise when slowing down. If this happens, add a little extra conditioner and the noise will go away.

AJs72K5 · 02-24-2008, 07:20 PM

I replaced the factory grenade locker in my 2000 Chevy 1/2 ton with an Auburn after I, well, grenaded it. I was running 4.56 gears and 35's. My brother-in-law has the truck now. Still has the Auburn in it, with no issues after 8 years.

02-21-2008, 10:26 AM	#1
dingo_dan_22 Registered User Join Date: Dec 2006 Location: Saskatchewan Posts: 119	Auburn Limited Slip - Experience/Recomendations I ordered an Eaton Posi from the local speedshop but his supplier was sold out so they sent me the Auburn Pro-Series Limited Slip. The Auburn unit was listed as $100 dollars more but they gave it to me for the same price. I have a 12 bolt rear end and will be installing 3.73's. Anyone have experience with one? Should I return the Auburn and get the Eaton? __________________ 71' Chevrolet -> 350c.i. w/ 600 Edelbrock Carb, Headers, P/S, 3/5 Drop

02-21-2008, 10:55 AM	#2
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: Auburn Limited Slip - Experience/Recomendations The Eaton is rebuildable.....is the Auburn? __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

02-21-2008, 10:57 AM	#3
Custom 68 Registered User Join Date: Nov 2001 Location: Springfield, MO Posts: 2,937	Re: Auburn Limited Slip - Experience/Recomendations watching this one. I am about ready to do the same swap... __________________ Dave 1968 Custom Chevy with turbo charged 5.3 gen III 4l80e swap 1967-71 GMC 3/4 ton long step 4x4 (not sure what year exactly?) "A good friend will bail you out of jail...but a true friend will be sitting next to you saying "that was frekin awesome". "If it doesn't fit force it...If it breaks then it needed to be replaced anyway!"

02-21-2008, 11:38 AM	#4
chevy72blu Registered User Join Date: Apr 2004 Location: Las Vegas, NV Posts: 2,188	Re: Auburn Limited Slip - Experience/Recomendations I have the Auburn pro and I LOVE it. Lotsa folks will talk about how the unit isnt rebuildable (uses a cone drive as opposed to a clutch pack), which it isnt. However, I spent quite a while working at the best drive line shop in Las Vegas and they consistently recommend auburn. Auburn has a replacement program in which you send them your broken unit and they send you a new one (I cant tell you the price of this, call them). From all that I have heard, the Auburn pro will greatly outlast the Eaton. Mine has spent a lot of time launching on 14.50 inch slicks without a complaint. __________________ RIP EastSideLowLife '72 C20 SWB convert. 5 lug, LS1/4l60e Last edited by chevy72blu; 02-21-2008 at 11:39 AM.

02-21-2008, 06:35 PM	#5
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: Auburn Limited Slip - Experience/Recomendations I ran an Auburn posi in my`90 Blazer and really liked it. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

02-21-2008, 08:52 PM	#6
Number98 Prestige Worldwide Join Date: Feb 2001 Location: Worldwide Posts: 2,553	Re: Auburn Limited Slip - Experience/Recomendations I went with the auburn pro in mine based off many recomendations from folks who know..... Obviously I have nothing to report since my truck is not on the road as of yet.... soon.... very soon.....

02-22-2008, 05:53 AM	#7
Ozark Tim Registered User Join Date: Aug 2004 Location: Oakville, MO Posts: 1,018	Re: Auburn Limited Slip - Experience/Recomendations I have the Auburn differential in one of my 1/2 ton two wheel drive trucks with 3:07 ratio. I think it was the lesser series as I am just a jaunt around town and now and then go fishing with it kind of old truck driver. I really like that it doesnt chatter or act like a positraction under normal driving but seems to give traction to both wheels when I am on a slick boat ramp or trying to enter a busy road without lighting up the right rear tire. Nothing to install! Remove the old unit, and swap the ring gear onto the new unit. I'd buy and press on new bearings though. Someone told me the new material used on the clutches of the Eaton units are not prone to chatter either for what it is worth. OT

02-22-2008, 06:32 AM	#8
Fastfun Registered User Join Date: Jun 2005 Location: Scottsdale, AZ Posts: 615	Re: Auburn Limited Slip - Experience/Recomendations I have had a Auburn Posi in my 72 350 automatic for about 3 years and no chatter or whinning. I am running 3:48 rear gears

02-22-2008, 07:51 AM	#9
chevy72blu Registered User Join Date: Apr 2004 Location: Las Vegas, NV Posts: 2,188	Re: Auburn Limited Slip - Experience/Recomendations glad to see you guys are all happy with Auburn. A few years ago on the board I seemed to be the only one who liked em'. Im sure some Eaton lovers will come in here soon enough __________________ RIP EastSideLowLife '72 C20 SWB convert. 5 lug, LS1/4l60e

02-22-2008, 08:36 AM	#10
silverado84355 Registered User Join Date: May 2007 Location: Carlsbad,NM Posts: 99	Re: Auburn Limited Slip - Experience/Recomendations I had an auburn in my 84 swb 4x4 and loved it, took me to the same places my buddies rigs with lockers would go!

02-22-2008, 11:39 AM	#11
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: Auburn Limited Slip - Experience/Recomendations I just sold my Blazer this summer.I had the Auburn in there since`99 and ran 12.50/33s on 10" rims.No disappointments here. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

02-22-2008, 01:24 PM	#12
dingo_dan_22 Registered User Join Date: Dec 2006 Location: Saskatchewan Posts: 119	Re: Auburn Limited Slip - Experience/Recomendations I took the differential to a guy in town who was highly recomended. He originally quoted $110 for the install, but now I'm having him swap guts from a 67' axle into the 71' axle so I won't need the axles re-drilled. He's also replacing the bushings in the control arms and track bar. I'll let you know the total bill. Thanks for the replies! __________________ 71' Chevrolet -> 350c.i. w/ 600 Edelbrock Carb, Headers, P/S, 3/5 Drop

02-22-2008, 01:28 PM	#13
dingo_dan_22 Registered User Join Date: Dec 2006 Location: Saskatchewan Posts: 119	Re: Auburn Limited Slip - Experience/Recomendations I bought an intall kit with the unit. It has all new shims, bearings, and hardware. __________________ 71' Chevrolet -> 350c.i. w/ 600 Edelbrock Carb, Headers, P/S, 3/5 Drop

02-22-2008, 06:04 PM	#14
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,419	Re: Auburn Limited Slip - Experience/Recomendations I had an Auburn on the 3.73 12-Bolt rear in my '67 K/10 Suburban. I liked it. I have Eaton's in the rear ends of my '68 C/10 [transplant] and '71 Jimmy [factory]. I'd be hard pressed to notice any difference between the makes. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not.

02-23-2008, 12:39 AM	#16
cameeks Long Fleet Club Join Date: Aug 2006 Location: Deer Park, TX Posts: 5,666	Re: Auburn Limited Slip - Experience/Recomendations I ran that unit for years in my old Camaro. Also my friend had one in his '83 Monty. It was a 7.5" differential and he sprayed the hell out of it for over a year and his daily driver. Both lasted with no problems __________________ Chris Meeks '69 Chevy Custom/10 Long Bed <-- Thread of the work I did before selling. Truck is now finished to the new owners design and running around. I was shown some pictures of the finished product. At least it survived the junk yard. FAQ Index by Krue Site Vendors Subscribe Here Forum Rules



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02-23-2008, 12:09 PM	#17
dingo_dan_22 Registered User Join Date: Dec 2006 Location: Saskatchewan Posts: 119	Re: Auburn Limited Slip - Experience/Recomendations I bought the unit from Queen City Performance in Regina. __________________ 71' Chevrolet -> 350c.i. w/ 600 Edelbrock Carb, Headers, P/S, 3/5 Drop

02-24-2008, 07:10 PM	#18
stope4 Registered User Join Date: Jan 2006 Location: Houston Posts: 434	Re: Auburn Limited Slip - Experience/Recomendations I've had both Auburn and Eaton. Couldn't really tell the difference but I've never severely tested either. Sometimes the Auburn made a slight thud noise when slowing down. If this happens, add a little extra conditioner and the noise will go away.

02-24-2008, 07:20 PM	#19
AJs72K5 Registered User Join Date: Nov 2007 Location: South Tx Posts: 1,083	Re: Auburn Limited Slip - Experience/Recomendations I replaced the factory grenade locker in my 2000 Chevy 1/2 ton with an Auburn after I, well, grenaded it. I was running 4.56 gears and 35's. My brother-in-law has the truck now. Still has the Auburn in it, with no issues after 8 years. __________________ - AJ Gray Matter Build - 1972 K5 with some stuff

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