stock axles on 79 4x4 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Midgets50 · 09-30-2013, 01:32 PM

Does anyone know what stock axles would be from my 79 k2500 gm truck. I've heard D60 rear and ad 44 front but have no clue. Any help would be greatly appreciated

crashz · 09-30-2013, 01:41 PM

Most likely a Dana 44 front axle and GM Corporate 14 bolt (full floater) in the rear. Keep in mind that there are different version of each (brakes and hubs usually).

1981Sturgis · 09-30-2013, 01:49 PM

My 79 3/4 ton 4x4 had Corp 10 bolt front, and corp 14 bolt rear.

Midgets50 · 09-30-2013, 08:28 PM

Thanks for the input guys. im pretty sure my rear diff cover has 14 bolts. how stout are these axles? The previous owner ran a HD snowplow on the donor truck. im planning on running 33's with a 4bt cummins. Should i invest in stronger axles or will these do the trick if i plan on have it has a daily pavement driver that might see occasional mud. If not what would you guys suggest and with what gearing. As always thanks for the help guys. such a wealth of knowledge on these forums

LONGHAIR · 09-30-2013, 08:59 PM

10 bolt for sure by '79. Dana44 was phased out in the '77-'78 models.

russgt · 09-30-2013, 09:43 PM

I pulled a dana 44 out of my grandpas 80 k20. 61k original miles on an all stock truck.

You will be fine in your application with either a 10 bolt or dana 44 in the front. The 14 bolt is a very strong axle.

mrolds88 · 10-01-2013, 12:04 AM

My 80 K10 had a 44 in it too. I think they ay have used the 44's in the MT trucks and the 10 bolts in the auto trucks. My 79 Blazer has a 10 bolt in the front .

wilkin250r · 10-01-2013, 01:29 PM

My 79 3/4ton has the D44 up front, Corp 14B full floater in the rear.

The D44 or the Corp 10 bolt are similar in strength. There are stronger axles out there, obviously, but either of those front axles will be plenty strong enough to handle 33" tires. I wouldn't say you need to upgrade until you get upwards of 38" tires, and even then it would be fine for pavement and mild offroad use.

As for the Corp 14B rear, there AREN'T a lot of stronger axles out there, that guy will take any abuse you can throw at it.

russgt · 10-01-2013, 07:56 PM

Quote:

Originally Posted by mrolds88

My 80 K10 had a 44 in it too. I think they ay have used the 44's in the MT trucks and the 10 bolts in the auto trucks. My 79 Blazer has a 10 bolt in the front .

This 80 was an auto truck with the odd ratio of 3.21

willett · 10-01-2013, 09:50 PM

The 14 bolt is a sh*t kicker. Comparable to a 60.
If you have a 3/4 ton you likely have a 44hd up front. It has tougher axle shafts than a reg 10 bolt or 44, but if you are going to run your truck hard expect to shred an axle.
Posted via Mobile Device

willett · 10-01-2013, 09:52 PM

I've seen an unlocked front 44 destroy a driver side axle on 31's. we were partying pretty hard though
Posted via Mobile Device

andrewmp6 · 10-02-2013, 01:35 AM

A nice chart to use http://coloradok5.com/axleguide.shtml

09-30-2013, 01:32 PM	#1
Midgets50 Registered User Join Date: Jun 2012 Location: maryville, mo Posts: 302	stock axles on 79 4x4 Does anyone know what stock axles would be from my 79 k2500 gm truck. I've heard D60 rear and ad 44 front but have no clue. Any help would be greatly appreciated

09-30-2013, 01:41 PM	#2
crashz Registered User Join Date: Jul 2012 Location: MA Posts: 207	Re: stock axles on 79 4x4 Most likely a Dana 44 front axle and GM Corporate 14 bolt (full floater) in the rear. Keep in mind that there are different version of each (brakes and hubs usually). __________________ 2012 Chevy 2500HD, 6.0L, 6spd auto, 4x4, ECSB 1987 GMC V3500 Dump, 6.2L diesel, TH400 1983 GMC K2500 - awaiting its restoration and Cummins swap.

09-30-2013, 01:49 PM	#3
1981Sturgis Registered User Join Date: Jun 2010 Location: Vermontville, Mi Posts: 80	Re: stock axles on 79 4x4 My 79 3/4 ton 4x4 had Corp 10 bolt front, and corp 14 bolt rear. Last edited by 1981Sturgis; 09-30-2013 at 02:11 PM.

09-30-2013, 08:28 PM	#4
Midgets50 Registered User Join Date: Jun 2012 Location: maryville, mo Posts: 302	Re: stock axles on 79 4x4 Thanks for the input guys. im pretty sure my rear diff cover has 14 bolts. how stout are these axles? The previous owner ran a HD snowplow on the donor truck. im planning on running 33's with a 4bt cummins. Should i invest in stronger axles or will these do the trick if i plan on have it has a daily pavement driver that might see occasional mud. If not what would you guys suggest and with what gearing. As always thanks for the help guys. such a wealth of knowledge on these forums

09-30-2013, 09:43 PM	#6
russgt Registered User Join Date: May 2008 Location: Waukesha, WI Posts: 904	Re: stock axles on 79 4x4 I pulled a dana 44 out of my grandpas 80 k20. 61k original miles on an all stock truck. You will be fine in your application with either a 10 bolt or dana 44 in the front. The 14 bolt is a very strong axle. __________________ 70 stepside 76 blazer 86 Silverado 20 Max Trailering 6.2 Crew 71 Nova SS My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=363634

10-01-2013, 12:04 AM	#7
mrolds88 Registered User Join Date: Jul 2011 Location: WV Posts: 946	Re: stock axles on 79 4x4 My 80 K10 had a 44 in it too. I think they ay have used the 44's in the MT trucks and the 10 bolts in the auto trucks. My 79 Blazer has a 10 bolt in the front . __________________ 72 GMC C2500 402/Th400 first truck (still have) 77 GMC C3500 CC dually Sold 70 C50 dump truck "Rusty" 87 K10 Suburban Sold 93 K2500 xcab 6.5TD 96 GMC K2500 Suburban 6.5 TD

10-01-2013, 01:29 PM	#8
wilkin250r Registered User Join Date: Sep 2010 Location: Lake Tahoe, Nevada Posts: 755	Re: stock axles on 79 4x4 My 79 3/4ton has the D44 up front, Corp 14B full floater in the rear. The D44 or the Corp 10 bolt are similar in strength. There are stronger axles out there, obviously, but either of those front axles will be plenty strong enough to handle 33" tires. I wouldn't say you need to upgrade until you get upwards of 38" tires, and even then it would be fine for pavement and mild offroad use. As for the Corp 14B rear, there AREN'T a lot of stronger axles out there, that guy will take any abuse you can throw at it. __________________ I know a little about cars, but if you have a question about electricity or sport quads, I'm your man!!!

10-01-2013, 09:50 PM	#10
willett Another Day, Another Dollar Join Date: Nov 2008 Location: North Vancouver, BC Posts: 1,316	Re: stock axles on 79 4x4 The 14 bolt is a sht kicker. Comparable to a 60. If you have a 3/4 ton you likely have a 44hd up front. It has tougher axle shafts than a reg 10 bolt or 44, but if you are going to run your truck hard expect to shred an axle. Posted via Mobile Device* __________________ -78 K20 Cheyenne 454 long box, 4" lift, 35" MT's, '84 cab, '80 box "its hip to be square"

10-01-2013, 09:52 PM	#11
willett Another Day, Another Dollar Join Date: Nov 2008 Location: North Vancouver, BC Posts: 1,316	Re: stock axles on 79 4x4 I've seen an unlocked front 44 destroy a driver side axle on 31's. we were partying pretty hard though Posted via Mobile Device __________________ -78 K20 Cheyenne 454 long box, 4" lift, 35" MT's, '84 cab, '80 box "its hip to be square"

10-02-2013, 01:35 AM	#12
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: stock axles on 79 4x4 A nice chart to use http://coloradok5.com/axleguide.shtml



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