Dana 60 Power Lock Questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

SavageC20 · 07-28-2019, 07:25 PM

I picked up a complete D60 limited slip on Craigslist for a couple hundred bucks. Guy said it came out of a 69 GMC 3/4 ton. Are the spring perches the same on a 2x4 and a 4x4? I have no idea if it came out of a two wheel drive truck or a four wheel drive. I am wanting to put this under my 72 c20 because the d60 is an open diff and it is very tired. I am hoping it will bolt right in.

Also would 69 be a power lock or a trac lock? From looking at it I think it is a power lock. I jacked one wheel off the ground and turned it and it had good resistance so I think the clutches are still in good shape.

Mike C · 07-28-2019, 10:10 PM

Spring centers are 40.5" on the 4x4 and 42.5" on the 4x2. Except one tons which have 40.5" springs centers. And Longhorns in 2500 or 3500 variety which are 40.5"

Longhorns and 4x4 are on 2 1/2" width springs. 2x4 on 2 1/4". Not sure on C30 as I have not had anything but square body one tons.

Most likely a PowerLock I think. But I'm sure it needs the fluid changed. Pull the cover and you will know.

SavageC20 · 07-29-2019, 12:35 AM

Thanks for all the info. I popped the cover off and it’s a power lock. I’ll measure the perches and see if it will bolt right in. Fingers crossed.

**special-K** · 07-29-2019, 08:08 PM

If it isn't the perches can be moved or you have what you need to go into your truck's rear at some point. You still have a good thing either way is what I'm saying.

SavageC20 · 07-29-2019, 10:40 PM

Quote:

Originally Posted by special-K

If it isn't the perches can be moved or you have what you need to go into your truck's rear at some point. You still have a good thing either way is what I'm saying.

Yep my thoughts exactly.

07-28-2019, 07:25 PM	#1
SavageC20 Registered User Join Date: Sep 2018 Location: California Posts: 151	Dana 60 Power Lock Questions I picked up a complete D60 limited slip on Craigslist for a couple hundred bucks. Guy said it came out of a 69 GMC 3/4 ton. Are the spring perches the same on a 2x4 and a 4x4? I have no idea if it came out of a two wheel drive truck or a four wheel drive. I am wanting to put this under my 72 c20 because the d60 is an open diff and it is very tired. I am hoping it will bolt right in. Also would 69 be a power lock or a trac lock? From looking at it I think it is a power lock. I jacked one wheel off the ground and turned it and it had good resistance so I think the clutches are still in good shape.

07-28-2019, 10:10 PM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,723	Re: Dana 60 Power Lock Questions Spring centers are 40.5" on the 4x4 and 42.5" on the 4x2. Except one tons which have 40.5" springs centers. And Longhorns in 2500 or 3500 variety which are 40.5" Longhorns and 4x4 are on 2 1/2" width springs. 2x4 on 2 1/4". Not sure on C30 as I have not had anything but square body one tons. Most likely a PowerLock I think. But I'm sure it needs the fluid changed. Pull the cover and you will know. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

07-29-2019, 12:35 AM	#3
SavageC20 Registered User Join Date: Sep 2018 Location: California Posts: 151	Re: Dana 60 Power Lock Questions Thanks for all the info. I popped the cover off and it’s a power lock. I’ll measure the perches and see if it will bolt right in. Fingers crossed.

07-29-2019, 08:08 PM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,858	Re: Dana 60 Power Lock Questions If it isn't the perches can be moved or you have what you need to go into your truck's rear at some point. You still have a good thing either way is what I'm saying. __________________ "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 ~



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