Where do I find a ring/pinion for K20 Eaton? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hula · 06-16-2012, 04:46 AM

I have a 1968 K20 3/4 ton 4WD with an Eaton rear end. Where do I find new ring and pinion sets?

Thanks

Beersnob · 06-16-2012, 06:41 AM

Call Randy's Ring and Pinion. They are located in Seattle and can usually get anything you want. Website is www.ringpinion.com. Phone is 1-866-631-0196.

BlackhillsHD · 06-16-2012, 11:27 AM

You are not going to find a new ring and pinion for an Eaton anywhere. Unless its a NOS on and you are going to pay through the nose for one. There is a thread over on Pirtate4x4 on the H072, and there is a company that is suppose to be producing them again soon. They are still in the development stages.

Redcap · 06-16-2012, 01:16 PM

Dump the Eaton and swap in a D60 or 14b.

obijuan · 06-16-2012, 03:30 PM

Buy another axle. What ratio do you want?
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andrewmp6 · 06-17-2012, 12:10 AM

I did a ton of googling i can't find anything for it.

**special-K** · 06-17-2012, 06:15 AM

Quote:

Originally Posted by Redcap

Dump the Eaton and swap in a D60 or 14b.

Lots of fools do that. Just buy or let one of them give you the one they're dumping and use the parts. What's wrong with yours? These are great rears and seldom need ring & pinion replacement,unless not lubed properly. If you want to change ratios,same thing,find an axle someone is discarding. I love them and in over 30 years have yet to find a reason to dump one for a rear that it no improvement.

hula · 06-17-2012, 03:49 PM

I have 4:56s and want a 3:73. I'll check Randy's and around.

hula · 06-17-2012, 03:56 PM

What size is the ring is it 8.5? Mine is a 10 bolt round cover.

obijuan · 06-17-2012, 07:49 PM

The 8 lug ho72 is a 10.5 ring gear or so. And 3.73 is not an available ratio. 4.10 was the highest, with 4.56, 5.13, and an alleged 5.86.
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mknittle · 06-17-2012, 08:27 PM

They are tough but the only ratios are slow and slower. ihave never seen a 4.10 I would like one. the only ones i have seen were 4.56and 5.13.

BlackhillsHD · 06-17-2012, 10:24 PM

I have a 410 in mine

hula · 06-17-2012, 11:51 PM

Great. Well I will be driving it around town anyway. Maybe a swap will be in the future. I don't think the swap to 4:10 will make that much difference anyway.

hula · 06-18-2012, 01:41 PM

What year or model of rear end is a straight swap as far as spring perch and all?

obijuan · 06-18-2012, 10:15 PM

Quote:

Originally Posted by hula

What year or model of rear end is a straight swap as far as spring perch and all?

If you've got leafs, 73-87/91 square body one tons. 2 and 4 wheel.
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hula · 06-23-2012, 10:12 AM

What about a Dana 60 for the rear since I have a Dana on the front? There's a Dana 60 rear on the forum. Parts easier to find, like ring and pinion?

http://67-72chevytrucks.com/vboard/s...d.php?t=488076

obijuan · 06-23-2012, 11:07 AM

Meh, its a wash.
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hula · 06-23-2012, 02:43 PM

Obi, is that good or bad?

obijuan · 06-23-2012, 03:44 PM

Most 8 lug rear axles.will provide long lasting service. Decide your parameters, like desired ration, original-ness, match front axle width, or just plain beef.
A 14 bolt is tried and true and cost effective. 373 is the highest ratio there with a matching front.
A 60 can get 355s, not sure about a 44.
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06-16-2012, 04:46 AM	#1
hula Registered User Join Date: May 2012 Location: Oklahoma Posts: 72	Where do I find a ring/pinion for K20 Eaton? I have a 1968 K20 3/4 ton 4WD with an Eaton rear end. Where do I find new ring and pinion sets? Thanks

06-16-2012, 06:41 AM	#2
Beersnob Registered User Join Date: May 2012 Location: Xenia, OH Posts: 65	Re: Where do I find a ring/pinion for K20 Eaton? Call Randy's Ring and Pinion. They are located in Seattle and can usually get anything you want. Website is www.ringpinion.com. Phone is 1-866-631-0196.

06-16-2012, 11:27 AM	#3
BlackhillsHD Registered User Join Date: Nov 2011 Location: Rapid City SD Posts: 140	Re: Where do I find a ring/pinion for K20 Eaton? You are not going to find a new ring and pinion for an Eaton anywhere. Unless its a NOS on and you are going to pay through the nose for one. There is a thread over on Pirtate4x4 on the H072, and there is a company that is suppose to be producing them again soon. They are still in the development stages. __________________ 1970 : Chevy: K20 "Frank the Tank" 6.0 LS, 4L80E, 14 bolt, and Dana 44 1970 K5 Blazer CST 350, TH350, Np205, Dana 60 and 14 bolt General Motors Master Certified wrench swinger ASE certified Master auto tech Instructor of Automotive Technology

06-16-2012, 01:16 PM	#4
Redcap Registered User Join Date: May 2010 Location: Lewis County, WA Posts: 1,523	Re: Where do I find a ring/pinion for K20 Eaton? Dump the Eaton and swap in a D60 or 14b.

06-16-2012, 03:30 PM	#5
obijuan Registered User Join Date: Jun 2012 Location: cibolo tx Posts: 1,033	Re: Where do I find a ring/pinion for K20 Eaton? Buy another axle. What ratio do you want? Posted via Mobile Device

06-17-2012, 12:10 AM	#6
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: Where do I find a ring/pinion for K20 Eaton? I did a ton of googling i can't find anything for it.

06-17-2012, 03:49 PM	#8
hula Registered User Join Date: May 2012 Location: Oklahoma Posts: 72	Re: Where do I find a ring/pinion for K20 Eaton? I have 4:56s and want a 3:73. I'll check Randy's and around.

06-17-2012, 03:56 PM	#9
hula Registered User Join Date: May 2012 Location: Oklahoma Posts: 72	Re: Where do I find a ring/pinion for K20 Eaton? What size is the ring is it 8.5? Mine is a 10 bolt round cover.

06-17-2012, 07:49 PM	#10
obijuan Registered User Join Date: Jun 2012 Location: cibolo tx Posts: 1,033	Re: Where do I find a ring/pinion for K20 Eaton? The 8 lug ho72 is a 10.5 ring gear or so. And 3.73 is not an available ratio. 4.10 was the highest, with 4.56, 5.13, and an alleged 5.86. Posted via Mobile Device

06-17-2012, 08:27 PM	#11
mknittle Registered User Join Date: Jul 2011 Location: Auburn ca. Posts: 2,886	Re: Where do I find a ring/pinion for K20 Eaton? They are tough but the only ratios are slow and slower. ihave never seen a 4.10 I would like one. the only ones i have seen were 4.56and 5.13. __________________ Mark My GMC build. http://67-72chevytrucks.com/vboard/s...d.php?t=536602

06-17-2012, 10:24 PM	#12
BlackhillsHD Registered User Join Date: Nov 2011 Location: Rapid City SD Posts: 140	Re: Where do I find a ring/pinion for K20 Eaton? I have a 410 in mine __________________ 1970 : Chevy: K20 "Frank the Tank" 6.0 LS, 4L80E, 14 bolt, and Dana 44 1970 K5 Blazer CST 350, TH350, Np205, Dana 60 and 14 bolt General Motors Master Certified wrench swinger ASE certified Master auto tech Instructor of Automotive Technology

06-17-2012, 11:51 PM	#13
hula Registered User Join Date: May 2012 Location: Oklahoma Posts: 72	Re: Where do I find a ring/pinion for K20 Eaton? Great. Well I will be driving it around town anyway. Maybe a swap will be in the future. I don't think the swap to 4:10 will make that much difference anyway.

06-18-2012, 01:41 PM	#14
hula Registered User Join Date: May 2012 Location: Oklahoma Posts: 72	Re: Where do I find a ring/pinion for K20 Eaton? What year or model of rear end is a straight swap as far as spring perch and all?

06-23-2012, 10:12 AM	#16
hula Registered User Join Date: May 2012 Location: Oklahoma Posts: 72	Re: Where do I find a ring/pinion for K20 Eaton? What about a Dana 60 for the rear since I have a Dana on the front? There's a Dana 60 rear on the forum. Parts easier to find, like ring and pinion? http://67-72chevytrucks.com/vboard/s...d.php?t=488076

06-23-2012, 11:07 AM	#17
obijuan Registered User Join Date: Jun 2012 Location: cibolo tx Posts: 1,033	Re: Where do I find a ring/pinion for K20 Eaton? Meh, its a wash. Posted via Mobile Device



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06-23-2012, 02:43 PM	#18
hula Registered User Join Date: May 2012 Location: Oklahoma Posts: 72	Re: Where do I find a ring/pinion for K20 Eaton? Obi, is that good or bad?

06-23-2012, 03:44 PM	#19
obijuan Registered User Join Date: Jun 2012 Location: cibolo tx Posts: 1,033	Re: Where do I find a ring/pinion for K20 Eaton? Most 8 lug rear axles.will provide long lasting service. Decide your parameters, like desired ration, original-ness, match front axle width, or just plain beef. A 14 bolt is tried and true and cost effective. 373 is the highest ratio there with a matching front. A 60 can get 355s, not sure about a 44. Posted via Mobile Device

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