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#1 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Very interesting Eaton info
I was reading a post where a guy "hardcore" posts some links to another site about Eaton axles and I found the links have great info. Was very suprised to learn the detroit locker for a 14 bolt can be used in the Eaton if you change axle shafts.
Here's the link, scroll down to member hardcore's reply and review the links he has pasted. http://coloradok5.com/forums/showfla...t=1#Post928445
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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#2 |
Currently Blazerless
Join Date: Apr 2000
Location: St. Joseph Mo.
Posts: 4,826
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I'm saving those links! its hard to find good info on the Eatons, I know the 14 bolt Corporate is the only axle that you can put a detroit locker in without changing the case making it alot cheaper to add than other axles.
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1972 C/30 133" W.B. C&C 1970 GMC 3500 157" W.B. single wheel C&C |
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#3 |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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i really want to get an eaton with a locker for cheap traction!
but i saw 2 different axles mentioned in those posts...one with a 10.5" ring gear, and one with a 12.5" ring gear...which one came in 67-72 (and earlier) light chev & gmc trucks?
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 |
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#4 |
Senior Member
Join Date: Apr 2000
Location: Orlando, FL
Posts: 1,076
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The 10.5" is a 14 bolt. The Eaton had a 10.125 if I remember right. Don't know about the other one.
Thanks for the link..!!!
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............................................................ 68 Chevy CST SWB w/LS1, carb & 700r4. Golden Anniversary clone with a few improvements. |
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#5 |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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I'd be really curious to see if anyone has actually done that 14 bolt axleshafts mod...seemed like all those guys had heard of it, but none of them had done it.
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 |
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#7 |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
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Oky are you saying that if I have a eaton rearend with a detroit locker I can put the locker in a 14 bolt corp ?
I think that's what you said... That would be Sweet.
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD |
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#8 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Actually, what I understand is the opposite, you can put a 14 bolt's locker and axle shafts in an Eaton. A locker is not produced now for the Eaton so this is good info to know. If my Eaton or it's locker ever break, I'm not sure I would go this route, but sure good to know.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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#9 |
Registered User
Join Date: Nov 2000
Location: Huntsville Ontario Canada
Posts: 4,052
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I dont have the time to read up all of the post right now. But the reason i am asking is that I am going to get a practial truck from the 73-87 area one that I can afford the parts. I have a 71 Eaton with a Detroit Locker. I am hoping that it will fit in a 14 bolt rear in a 73-87 3/4 or 1 ton truck.
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1968 Suburban numbers matching all original truck now equipped with 6.0/4L80 on Accuair http://67-72chevytrucks.com/vboard/s...d.php?t=625017 1967 C/20 6.0/4L80 Roofing Truck 1990 V2500 Suburban "Plow Truck" 2005 TAHOE DD |
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#10 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Have you considered just swapping over the whole Eaton axle? The 14 bolt is very heavy and the Eaton is as strong or stronger than the 14 bolt, plus it doesn't hang down as far. If the 71 Eaton axle is in good shape, I sure would give consideration to just putting it under the 73-87 truck.
The links above said you have to shorten the 14 bolt axle shafts to put them in the Eaton - so I'm guessing it won't work as it sounds like the Eaton axle shafts won't be long enough to work in a 14 bolt axle.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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#11 |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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some board members said it is prohibitively expensive to get new bearings for the eaton axle, but the guys on those pages seemed to have no problem.
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 |
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#13 |
i love summertime
Join Date: Jul 2002
Location: Kelowna BC
Posts: 4,303
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kinda weird reading all these replies when my last name is eaton...some funny things come up if you think of it in a different way....yukon...you can put a 14 bolt's locker and axle shafts in an Eaton..maybe so but not this eaton!!!!
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1967 shortbox stepside Chevy, 365 hp 327, th400. GLOVE BOX LIGHTS FORSALE, click link for info http://67-72chevytrucks.com/vboard/s...d.php?t=273724 |
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#14 |
Registered User
Join Date: Mar 2002
Location: Floodwood Minnesota
Posts: 1,057
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d p
Board member david passmore HAS HAD THIS DONE. He mentioned it a while back. He could answer any of your questions. I think the eaton case with a detroit locker is the way to go. You get the best of everything....
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1967 K30 Napco 292/SM420 original paint 30k miles 1968 K60 Napco 396/5spd. dbl frame 52" michelins 1969 K10 SWB GMC 454/4spd 6" 35's posi,hooks 1972 C30 longhorn,BB/AT,A/C,Tilt,Toolbox,lokr 1987 K20 Chevrolet Suburban. 6" lift. 5.7L/TH400 1979 K60 GMC Coleman 4x4, 427/Allison. |
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#15 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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sakohntr - that's good info - hopefully I will never have a problem with my Eaton, but sure is nice to know there are some options out there.
67cst - that is funny!
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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#16 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,720
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Hey Mark, you should work a deal to buy a 14 bolt detroit locker and swap for the Eaton one for your truck. No axle shaft changes needed! Coincidentally... I happen to have a 14 bolt detroit for sale...
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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 |
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#17 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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I'd be all over that, but luckily factory set me up good
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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#18 |
Born To Lose Club
![]() Join Date: Feb 2003
Location: Calgary, Alberta/Oxenden, Ontario, Great White North
Posts: 13,306
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were is that sticker placed Yukon?
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Brian Smith ![]() 1969 Chevrolet K10 LWB Fleetside - Proud Owner For 20 Yrs - 1 of 208 Built & Sold In Canada! - 283 V8/350TH/NP208, 2" All Spring Lift, 32" Good Year MT/R's. 1972 GMC K2500 Custom LWB Fleetside - Proud Owner For 2 Yrs - 1 of 571 Built & Sold In Canada! - 350 V8/SM465/NP205, 4” Rough Country Lift, 33” Interco TSL Thornbirds 2007.5 GMC Sierra SLE 2500HD 4x4 - Proud Owner For 15 Yrs - 6.6L V8 Duramax Diesel/Allison 1000, 2" Lift, 33" Mickey Thompson MTZ's. 2008 Yamaha Raptor 700r - Proud Owner For 13 Yrs - ITP Mud Lites. 2015 John Deere 1025R - Proud Owner For 6 Yrs - 24HP Diesel/H120/54D/260B/SB1154. |
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#19 |
Join Date: Dec 1999
Location: Eastern - Manitoba Canada, Winnipeg
Posts: 4,369
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On my parts 70 chev sub the sticker is above the mirror on the roof... and on my 70 gmc sub its above the jack in the rear on passenger side.
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Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife. |
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#20 |
Registered User
Join Date: Jul 2003
Location: Cypress, Tx
Posts: 4,005
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I could never understand all of the rear end gibberish. Can someone please post pictures along with explanations for the different diffs. Please!!! I don't understand a corporate from an eaton or a floater vs non floater. The only theing I really understand is 10 bolt and 12 bolt. I'm still grasping the whole posi is the same as limited slip concept, because for years I thought they were similar, but still different. Come on now, Hook a brother up!!!
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1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE |
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#21 | |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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Quote:
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 |
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#22 |
user # 2756
![]() Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
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jorgensensc, I have a copy of the dana 60-70 powr-loc manual in the link in my signature. That'll be a start.
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm ![]() |
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#23 |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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jorgensensc- I will try to explain some. here we go:
the rearend in question here is the eaton ho52 (3/4 ton) and ho72 (1 ton) axle. sometimes incorrectly referred to as "10 bolts" because they have 10 bolts holding the diff cover on. they are basically the same, but have different sized brakes. they have dropout third members like a ford 9 inch. these axles came in some 3/4 and all 1 ton trucks 67-72, and all 3/4 and 1 ton trucks befor that, IIRC. here is a pic: ![]() Next is the dana 60. this axle came in some 3/4 ton and some 1/2 ton 67-72 trucks, as well as some Ford and Internationals. This is the rearend that is always found behind a BB 3/4 ton truck. Also, it is predominant in GMC's. the version in the 1/2 ton trucks is semi floating, which means the axleshafts are held in with c clips. the 1/2 ton version also only has 6 lugs, while the 3/4 ton full floating version has 8. the semi floating design is weaker than the full floating type, but all 1/2 ton rear axles are semi floating. another easy way to tell is if the axle has a hub sticking past the lugs. If it does, it is a full floater. If not, it is a semi floater. The dana 44, 60, 70, and 80 rearends all look pretty much alike, but the dimensions of various components differs. Each should have a number corresponding with the name (44, 70, etc) cast on the axle housing by the diff cover. Also, dana axles all have drain plugs on the diff covers. They also all have 10 bolts holding the diff cover on. Some early 1/2 ton GMC's will have dana 44 rearends. Dana 70 & 80 aren't found stock on any 67-72, but do show up later in GM's truck lineup. A way to diffrentiate the dana 44 and 10 bolt (which both have 10 bolt diff covers and appear similar) are the small "ears" on the bottom of the corporate diff. ![]() Last, the corporate 14 bolt. can also be had in full float or semi float designs. this axle was the replacement for the Eaton HO axle, it first appeared in '73 in all 3/4 and most 1 ton trucks (the dana 70 is sometimes used on 1 ton dually units). the dana 60 was no longer available. in appearance, it resembles the dana units, but it has 14 bolts holding the diff cover on (vs 10 for danas) and doesn't have a drain plug on the diff cover (it's on the side of the axlehousing). this axle is big and heavy, and is very popular with the offroading crowd. ![]() hope this helps a little.
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 Last edited by 1969 GMC; 12-20-2003 at 03:07 AM. |
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#24 |
Registered User
Join Date: Jul 2003
Location: Cypress, Tx
Posts: 4,005
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1969 GMC,
WOW, I'm going to have to save this page!!! That is really great info, thanks. It's a whole lot to get your head around. Thanks again!!!
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1972 C20 Suburban- Big Blue Betty '56 Chevy Bel Air Sedan- Frame up Restoration -What would you attempt to achieve if you knew you could not fail?- -I Refuse To Tiptoe Through Life, Only To Arrive Safely At Death's Door- R.I.P. EAST SIDE LOW LIFE |
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#25 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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My sticker for my NoSpin is directly under the rear window on the driver side of the cab. My instruction sheet showing shift positions for the Rockwell T221 transfer case is directly above the mirror on the cab roof. On the outside of my glove box door is an instruction sheet giving more info on the front axle.
I've read repeatedly that the 1969's always had the mirrors mounted on the roof, but mine couldn't have been as that is where the factory sticker is for the transfer case shift pattern. When I bought my truck it didn't have a rear view mirror at all. Just goes to show these trucks were put together by hand and workers did things differently I guess. 1969 GMC great info.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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