what do i have??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72kool · 10-04-2016, 10:42 AM

im trying to find parts for a rear end rebuild and i do not know what spline count my axles are. the truck is a '72 GMC C25 with the dana 60 rear differential and 4.10 gears. what spline count did these come with? the obvious answer would be to pull the axles and count but i want to get the parts here before i tear into it. also , are there any good seal and bearing kits out there? otherwise i was going to just get what i could from rockauto for good prices. the plan is the replace the axle bearings and seals, check insides for any wear and swap insides for either a powertrax no-slip or spartan locker, and then clean and paint housing. any thoughts or suggestions are welcomed

LongBox · 10-04-2016, 10:59 AM

Well, assuming it's an 8 lug, pulling an axle is so easy...you don't even have to jack the truck up. And that way, you will know whether you are ordering the right parts.

Just undo the circle of bolts that holds the flange on the axle to the hub, and pull it out. Goes back in just as easy.

SS Tim · 10-04-2016, 02:28 PM

It "should" be a 30 spline with either the 127" or 133" wheelbase.

**68350** · 10-04-2016, 02:35 PM

I just pulled my Dana 60 apart in my 71. 30 spline axles. Sent moser measurements and they are making me a new set. Also I used the timken drk331 bearing and seal kit

BILT4ME · 10-04-2016, 02:40 PM

Quote:

Originally Posted by SS Tim

It "should" be a 30 spline with either the 127" or 133" wheelbase.

Tim, do you have the sheets that would include the K25 for 1970? I have a K25 for 1970 and I have an axle assy from a 72 C20 and want to confirm what parts I can use from it.

SS Tim · 10-04-2016, 02:51 PM

Just Google X510-8DSD pdf (~3MB) for your own copy.

"This catalog contains applications and part listings for front and rear axles which fit vehicles from model
years 1967-1978. For information on model years between 1978-1998, please refer to catalog X510-9DSD.
For miscellaneous models from years 1979-1984, please refer to X510-7DSD"

Info everyone with a D60 "should" have. BOM numbers are a great way to confirm what you have or are looking at.

BILT4ME · 10-04-2016, 03:22 PM

Quote:

Originally Posted by SS Tim

Just Google X510-8DSD pdf (~3MB) for your own copy.

"This catalog contains applications and part listings for front and rear axles which fit vehicles from model
years 1967-1978. For information on model years between 1978-1998, please refer to catalog X510-9DSD.
For miscellaneous models from years 1979-1984, please refer to X510-7DSD"

Info everyone with a D60 "should" have. BOM numbers are a great way to confirm what you have or are looking at.

Thanks Tim!

Nice to have for myself!

I appreciate it!

You know much that is hidden, O' Tim.
https://www.youtube.com/watch?v=JTbrIo1p-So

SS Tim · 10-04-2016, 03:58 PM

MP's Tim, the Enchanter.... thats great! :-)

Did you have any problem downloading the PDF file?
Unfortunately the good Dana link www.2dana.com/pdf/x510-8dsd is apparently dead, time for more research....

BILT4ME · 10-04-2016, 05:43 PM

Yes, but not at the Dana location.

See below.

http://www.canadawideparts.com/downl..._X510-8DSD.pdf

There you have it.
Stop saying the word!
How do I know to stop saying it if you don't tell me what it is?!?!?

SS Tim · 10-04-2016, 05:56 PM

Thanks, now every one has a working link.

Got "it".

10-04-2016, 10:42 AM	#1
72kool Registered User Join Date: Dec 2012 Location: kearney nebraska Posts: 613	what do i have??? im trying to find parts for a rear end rebuild and i do not know what spline count my axles are. the truck is a '72 GMC C25 with the dana 60 rear differential and 4.10 gears. what spline count did these come with? the obvious answer would be to pull the axles and count but i want to get the parts here before i tear into it. also , are there any good seal and bearing kits out there? otherwise i was going to just get what i could from rockauto for good prices. the plan is the replace the axle bearings and seals, check insides for any wear and swap insides for either a powertrax no-slip or spartan locker, and then clean and paint housing. any thoughts or suggestions are welcomed __________________ 1972 GMC C20 Custom Camper 350/TH350

10-04-2016, 10:59 AM	#2
LongBox Registered User Join Date: Sep 2016 Location: Vancouver BC Posts: 784	Re: what do i have??? Well, assuming it's an 8 lug, pulling an axle is so easy...you don't even have to jack the truck up. And that way, you will know whether you are ordering the right parts. Just undo the circle of bolts that holds the flange on the axle to the hub, and pull it out. Goes back in just as easy. __________________ Rick -69 GMC 910 Long Box, 350 -98 Chev Silverado 1500, 350 Vortec 4L60e -08 Mustang GT Convertible

10-04-2016, 02:28 PM	#3
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,507	Re: what do i have??? It "should" be a 30 spline with either the 127" or 133" wheelbase. Attached Images __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

10-04-2016, 02:35 PM	#4
68350 Senior Member Join Date: Jan 2002 Location: Williston, ND Posts: 2,999	Re: what do i have??? I just pulled my Dana 60 apart in my 71. 30 spline axles. Sent moser measurements and they are making me a new set. Also I used the timken drk331 bearing and seal kit __________________ 68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi

10-04-2016, 02:51 PM	#6
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,507	Re: what do i have??? Just Google X510-8DSD pdf (~3MB) for your own copy. "This catalog contains applications and part listings for front and rear axles which fit vehicles from model years 1967-1978. For information on model years between 1978-1998, please refer to catalog X510-9DSD. For miscellaneous models from years 1979-1984, please refer to X510-7DSD" Info everyone with a D60 "should" have. BOM numbers are a great way to confirm what you have or are looking at. __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

10-04-2016, 03:58 PM	#8
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,507	Re: what do i have??? MP's Tim, the Enchanter.... thats great! :-) Did you have any problem downloading the PDF file? Unfortunately the good Dana link www.2dana.com/pdf/x510-8dsd is apparently dead, time for more research.... __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban Last edited by SS Tim; 10-04-2016 at 04:05 PM.

10-04-2016, 05:43 PM	#9
BILT4ME Registered User Join Date: Jul 2016 Location: Olathe, KS Posts: 267	Re: what do i have??? Yes, but not at the Dana location. See below. http://www.canadawideparts.com/downl..._X510-8DSD.pdf There you have it. Stop saying the word! How do I know to stop saying it if you don't tell me what it is?!?!? __________________ 1970 GMC K2500 Dis-use is harder on a car than mis-use.

10-04-2016, 05:56 PM	#10
SS Tim Registered User Join Date: Aug 2010 Location: Edwards, CA Posts: 7,507	Re: what do i have??? Thanks, now every one has a working link. Got "it". __________________ Thanks, Tim * VIN/Model Decoders * Power Team Charts (engine/transmission/gear ratio) * Post Your Pickup SPID Blazer SPID Suburban/Panel SPID * RTFM ... Read The Factory Manuals... download 'em here Highlanders Do you have a 1972 Plaid Pickup? Plaid Blazer ** Plaid Suburban

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