Best limited slip option for a Dana? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MrC1 · 04-03-2009, 03:32 PM

I've got a C20 with the Dana 60 rear, but it's a one legger. I might step the gearing up form the factor 3.54s at some point and would like to stab in a posi unit at that time.

What's the best way to get one of these for the Dana? I don't mind if it's used as long as it's a rebuildable type. I have no interest in spending $800 on a shiny new one.

MrC1 · 04-06-2009, 09:43 AM

Doesn't anyone know the answer to this? Surely some of you have upgraded to a Limited slip diff!

MrC1 · 04-09-2009, 08:06 AM

No info????

pumpkin · 04-09-2009, 08:59 AM

If you need the traction of two wheels, the only way in my opinion is Detroit Locker. If you just want a bit more traction then I would go extreme duty Auburn. You can buy a locker used, but a posi I would buy new.

MickMc · 04-09-2009, 11:59 AM

Dana corp makes what I think is called a Trac Lock.
Very reasonable in cost, like everyone else its a carrier replacement.
Lots of places to buy. Not to name names but look for someone who carries Dana/Spicer parts.
I've used Trac Locks before, very forgiving, very drive-able.

Don't do a Locker in a street driven four speed. The back lash will drive you crazy. The tire chirping is cool for a while, the noisy differential is easy to over come with a good radio.
Air Locker is the coolest, but also the most expensive.

Mick

MrC1 · 04-09-2009, 12:37 PM

Thanks! I don't want it to be clunking for sure, I just want to have 2 wheels driving. I may step up the gearing slightly, so that would be the time to do it.

**special-K** · 04-10-2009, 08:17 PM

I have the factory Power-lok/3.54 and it`s perfect.Most guys would kill for your 3.54s these days...plenty of pulling power and the tallest possible gears in a 3/4t.I`d just look for a 3.54 Power-Lok and bolt in.If you do your own diff work look for a power-Lok and install.The next step up in money would be a new Auburn.

1969 GMC · 04-10-2009, 08:39 PM

posi and limited slip are THE SAME THING. posi was just gm's nomenclature for one.

the track-lock and power lock are both limited slips or posis, but the power lock is stronger. like special-K said, it was OEM in the d60 rears in our trucks, and what i would look for if i were you.

also, the d60's under our trucks have 30 spline axles. at least my '69 did.

BCOWANWHEELS · 04-10-2009, 08:56 PM

Sorry fellas but the power lock has clutch disc's. And the track lock doesnt. The power lock will only give when your on hard pavement and turn tight, both wheels will always pull. A trac lock one or the other wheel will pull. I,ve been installing these in 4x4 trucks for 15+ yrs. The power lock has a 2 piece carrier and the trac lock has a 1 piece carrier and is torque sencing. Power lock is twice the diff as trac lock and thats why A TRAC LOCK is half price. I'd only install a power lock if you for sure want a true posi but expect to install new rear tires every 20,000 miles as it will eat em if the power lock has good clutch plates. Also when you go around a corner especially on wet roads the rear end will break loose real easy especially on snow, mud etc. Only you can determin how you want your rear setup. Heres a list of the different differentials in order of harshment.
1. Open carrier
2. Trac lock
3. Power lock
4. Detroit locker
5. Spool

70rs/ss · 07-29-2009, 11:30 AM

Older thread, but I just popped the cover off my Dana the other day and I have the 3.54's and what I believe to be the Power Lock as there are a ring of blots on the end of the carrier and the carrier looks to be 2 pieces? So anyone w/picts??

**kwmech** · 07-29-2009, 04:59 PM

Quote:

Originally Posted by 70rs/ss

Older thread, but I just popped the cover off my Dana the other day and I have the 3.54's and what I believe to be the Power Lock as there are a ring of blots on the end of the carrier and the carrier looks to be 2 pieces? So anyone w/picts??

Yes 2 piece carrier will be a power-loc, and they are rebuildable.

70rs/ss · 07-29-2009, 06:02 PM

Quote:

Originally Posted by kwmech

Yes 2 piece carrier will be a power-loc, and they are rebuildable.

Is that better than the trac-loc? How strong is it, say vs a 14 bff rear? I have both and want to build a 1 or 3/4 ton 4X out of my Burb??

deadmoon · 07-29-2009, 12:19 PM

i have 72 c 20 with a dana 60 and last fall I installed a detroit locker.one of the best things done with my truck.

Dr. Evil · 07-29-2009, 04:36 PM

So what does the SPID G87 Max Traction Axle mean? is it a posi?

04-03-2009, 03:32 PM	#1
MrC1 Dork For Days Join Date: Aug 2005 Location: Dallas Posts: 407	Best limited slip option for a Dana? I've got a C20 with the Dana 60 rear, but it's a one legger. I might step the gearing up form the factor 3.54s at some point and would like to stab in a posi unit at that time. What's the best way to get one of these for the Dana? I don't mind if it's used as long as it's a rebuildable type. I have no interest in spending $800 on a shiny new one. __________________ 1972 C20, 402/700R4 - My first classic truck, bought in September 2005. 85% transformed from "Farm" to "Cool" status! 1970 Dodge Challenger 440, 4sp (my other toy) 12.67 @ 117 MPH, with a pathetic 2.022 60' 2007 Dodge Charger SRT-8 2008 Cadillac CTS All-American garage, baby!

04-06-2009, 09:43 AM	#2
MrC1 Dork For Days Join Date: Aug 2005 Location: Dallas Posts: 407	Re: Best limited slip option for a Dana? Doesn't anyone know the answer to this? Surely some of you have upgraded to a Limited slip diff! __________________ 1972 C20, 402/700R4 - My first classic truck, bought in September 2005. 85% transformed from "Farm" to "Cool" status! 1970 Dodge Challenger 440, 4sp (my other toy) 12.67 @ 117 MPH, with a pathetic 2.022 60' 2007 Dodge Charger SRT-8 2008 Cadillac CTS All-American garage, baby!

04-09-2009, 08:06 AM	#3
MrC1 Dork For Days Join Date: Aug 2005 Location: Dallas Posts: 407	Re: Best limited slip option for a Dana? No info???? __________________ 1972 C20, 402/700R4 - My first classic truck, bought in September 2005. 85% transformed from "Farm" to "Cool" status! 1970 Dodge Challenger 440, 4sp (my other toy) 12.67 @ 117 MPH, with a pathetic 2.022 60' 2007 Dodge Charger SRT-8 2008 Cadillac CTS All-American garage, baby!

04-09-2009, 08:59 AM	#4
pumpkin Registered User Join Date: Apr 2006 Location: East Sooke B.C. Canada Posts: 543	Re: Best limited slip option for a Dana? If you need the traction of two wheels, the only way in my opinion is Detroit Locker. If you just want a bit more traction then I would go extreme duty Auburn. You can buy a locker used, but a posi I would buy new.

04-09-2009, 11:59 AM	#5
MickMc Registered User Join Date: Feb 2008 Location: Albuquerque Posts: 359	Re: Best limited slip option for a Dana? Dana corp makes what I think is called a Trac Lock. Very reasonable in cost, like everyone else its a carrier replacement. Lots of places to buy. Not to name names but look for someone who carries Dana/Spicer parts. I've used Trac Locks before, very forgiving, very drive-able. Don't do a Locker in a street driven four speed. The back lash will drive you crazy. The tire chirping is cool for a while, the noisy differential is easy to over come with a good radio. Air Locker is the coolest, but also the most expensive. Mick Last edited by MickMc; 04-09-2009 at 11:59 AM.

04-09-2009, 12:37 PM	#6
MrC1 Dork For Days Join Date: Aug 2005 Location: Dallas Posts: 407	Re: Best limited slip option for a Dana? Thanks! I don't want it to be clunking for sure, I just want to have 2 wheels driving. I may step up the gearing slightly, so that would be the time to do it. __________________ 1972 C20, 402/700R4 - My first classic truck, bought in September 2005. 85% transformed from "Farm" to "Cool" status! 1970 Dodge Challenger 440, 4sp (my other toy) 12.67 @ 117 MPH, with a pathetic 2.022 60' 2007 Dodge Charger SRT-8 2008 Cadillac CTS All-American garage, baby!

04-10-2009, 08:17 PM	#7
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Best limited slip option for a Dana? I have the factory Power-lok/3.54 and it`s perfect.Most guys would kill for your 3.54s these days...plenty of pulling power and the tallest possible gears in a 3/4t.I`d just look for a 3.54 Power-Lok and bolt in.If you do your own diff work look for a power-Lok and install.The next step up in money would be a new Auburn. __________________ "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 ~

04-10-2009, 08:39 PM	#8
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	Re: Best limited slip option for a Dana? posi and limited slip are THE SAME THING. posi was just gm's nomenclature for one. the track-lock and power lock are both limited slips or posis, but the power lock is stronger. like special-K said, it was OEM in the d60 rears in our trucks, and what i would look for if i were you. also, the d60's under our trucks have 30 spline axles. at least my '69 did. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

04-10-2009, 08:56 PM	#9
BCOWANWHEELS Registered User Join Date: Nov 2006 Location: KINGSPORT,TN. Posts: 3,035	Re: Best limited slip option for a Dana? Sorry fellas but the power lock has clutch disc's. And the track lock doesnt. The power lock will only give when your on hard pavement and turn tight, both wheels will always pull. A trac lock one or the other wheel will pull. I,ve been installing these in 4x4 trucks for 15+ yrs. The power lock has a 2 piece carrier and the trac lock has a 1 piece carrier and is torque sencing. Power lock is twice the diff as trac lock and thats why A TRAC LOCK is half price. I'd only install a power lock if you for sure want a true posi but expect to install new rear tires every 20,000 miles as it will eat em if the power lock has good clutch plates. Also when you go around a corner especially on wet roads the rear end will break loose real easy especially on snow, mud etc. Only you can determin how you want your rear setup. Heres a list of the different differentials in order of harshment. 1. Open carrier 2. Trac lock 3. Power lock 4. Detroit locker 5. Spool __________________ I BELIEVE IN JOHN 3:16 Last edited by BCOWANWHEELS; 04-10-2009 at 08:58 PM.

07-29-2009, 11:30 AM	#10
70rs/ss Registered User Join Date: Dec 2004 Location: Northern AZ Posts: 7,270	Re: Best limited slip option for a Dana? Older thread, but I just popped the cover off my Dana the other day and I have the 3.54's and what I believe to be the Power Lock as there are a ring of blots on the end of the carrier and the carrier looks to be 2 pieces? So anyone w/picts??

07-29-2009, 12:19 PM	#13
deadmoon Registered User Join Date: Oct 2006 Location: oslo,norway Posts: 1	Re: Best limited slip option for a Dana? i have 72 c 20 with a dana 60 and last fall I installed a detroit locker.one of the best things done with my truck.

07-29-2009, 04:36 PM	#14
Dr. Evil Registered User Join Date: Nov 2008 Location: Bernardsville, NJ Posts: 164	Re: Best limited slip option for a Dana? So what does the SPID G87 Max Traction Axle mean? is it a posi?

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