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#1 |
Registered User
Join Date: Apr 2006
Location: Ontario, Canada
Posts: 16
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Eaton Rearend Swap?
I have given up trying to find brake drums and parts for my c30 longhorn (Eaton HO72). I have sourced another Eaton rearend out of a '71 c-20 (HO52?). The drums are smaller. Before I do the swap I want to know am I going to have any problems getting parts for the '71 c-20 eaton rear-end?
Thanks in advance for the help!
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1969 Chevrolet Longhorn C30 - 350, 4-speed |
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#2 |
Senior Member
![]() Join Date: Sep 2001
Location: Seattle, WA, USA
Posts: 5,817
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Re: Eaton Rearend Swap?
Here's some helpful links:
My Rear drum brake rebuild last month... There's a parts list I compiled farther down. Everything I bought was perfect for the HO52 under my '69. As long as the drums and shoes are right you should be good to go.
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'69 3/4 ton C20 2wd-350ci/TH400 '69 3/4 ton Custom 20 2wd-350ci/4sp Manual '99 2wd 5.7 Chevy Tahoe Seattle, WA. Last edited by COBALT; 06-16-2006 at 12:03 PM. |
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#3 |
Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: Eaton Rearend Swap?
Why not upgrade the HO72 to disc. brake setup, I think most of the hardware for the 14b ff swap directly
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's ![]() 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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#4 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Eaton Rearend Swap?
Better look at the front stuff too... they're just as hard to find. I was able to locate rear shoes, but not front ones on my 70 C/30 longhorn.
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#5 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Re: Eaton Rearend Swap?
The ho52 will not have as much brake as the ho72. Look for a newer 14 bolt, should be some at the junkyards. You will get better brakes and you should be able to get one with 3.73 gears. I assume you're talking single wheels on the one-ton.
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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#6 |
Registered User
Join Date: Jun 2003
Location: spokane wa
Posts: 2,189
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Re: Eaton Rearend Swap?
Can I say it... Huh.. Huh... Can I...
Disc brake it and be done.... ![]() See sig below... I just felt obligated.. You have options.. It is just real hard to keep them stock and get stock parts. Cobalts list is the best I have seen around, and have actually used it. We are just an option.. Good luck.
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Support The Board Last edited by drink2mny; 06-16-2006 at 08:43 PM. |
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#7 |
Registered User
Join Date: Jun 2006
Location: SC
Posts: 47
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Re: Eaton Rearend Swap?
we bought brakes for our 71 longhorn 1 ton with the i beleive they were 13 and a half inch drums at autozone. had to order em tho i think. and the front rotors came from autozone as well but they wernt cheap.
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71 chevy longhorn 1 ton 79 chevy straight 6 79 burb 454 91 silverado 350 TBI and a few others that my brand loyalty wont permit me to post. Eureka Boys!!!! ![]() |
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#8 |
Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: Eaton Rearend Swap?
longhorn, I think your 70 probably had drums up front, shouldn't be an issue with good2go's 71, as for the rear brakes, there always seems to be someone selling those around here, but I think you can only get that stuff used, I don't think it can even be purchased from anyone these days......I would say fab up a cheap disc. brake kit, if you plan on keeping the truck, this issue will come up again, the rotors for the swap cost less than $30 a pop and are standard for TONS of newer trucks, you can do the swap for less than a couple hundred if you are willing to put it together yourself, you need front rotors and calipers (I believe for a 73 and up front axle), and brakets for a 14bolt disc. brake conversion, I think that, an adjustable valve for your rear brake lines, and flex lines and you are set.....www.pirate4x4.com has several links on this....post in the newbie section, I am sure they can walk you through it with part numbers and all, my HO52 is getting this upgrade when my drums are done for.
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's ![]() 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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#9 |
Having issues
Join Date: Jul 2005
Location: Eldorado Ca, an hour east of sacramento
Posts: 696
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Re: Eaton Rearend Swap?
heh,I dont know what is so hard about finding H072 axles. I cant sell mine for giveaway prices, and I find more of them all the time for $150 at the local junkyards..
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Quando Omni Flunkus Moritati. The Man's Prayer: "I'm a man, but I can change, if I have to, I guess." |
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#10 |
Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: Eaton Rearend Swap?
I think the issue here is finding the brake parts, not the axles.
oh yeah, and where do you find all of these freebie trucks you find??????
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's ![]() 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! |
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#11 |
Registered User
Join Date: Jun 2003
Location: spokane wa
Posts: 2,189
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Re: Eaton Rearend Swap?
Just a heads up. If you plan to do your own disc brake setup using the 73 up 8 lug chevy rotors. If you have 1/2" lug studs. you will need to have your hubs drilled out to to install the 9/16" studs that will work with the 73 up rotor..
People think disc brakes are easy...... They are all different in some slight way....
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Support The Board Last edited by drink2mny; 06-17-2006 at 12:02 AM. |
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#12 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Eaton Rearend Swap?
shelby, hi8s longhorn is a 69...4 wheel drums, should be pretty much exactly like mine.
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#13 |
Registered User
Join Date: Jun 2003
Location: spokane wa
Posts: 2,189
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Re: Eaton Rearend Swap?
aaahhh Dam Longhorn.. Didn't see his sig..
Disregard all disc brake info.. Of course untill you go disc up front.... ![]() ![]()
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#14 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Eaton Rearend Swap?
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#15 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: Eaton Rearend Swap?
That would be cool to find a bunch of HO72s in the junkyard with brand new brakes.
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"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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#16 |
Account Suspended
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Location: PA
Posts: 1,411
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Thought I'd jump in here and share a little. I did the disk conversion on my HO72 and its easy. Now the truck has 12.5" front and rear rotors and stops really well. Lost a lot of weight off the rear end also.
The one thing I would recommend to anyone doing a four wheel disk conversion on these trucks would be to get a mid-1970's corvette disk/disk power master cylinder at the same time. ( you can get these from Advance Auto Parts for about $39.00 ). Save yourself the trouble of trying to make the stock M.C. work with the new setup. 72longbed |
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#17 | |
Having issues
Join Date: Jul 2005
Location: Eldorado Ca, an hour east of sacramento
Posts: 696
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Re: Eaton Rearend Swap?
Quote:
![]() ![]() To keep this on topic, I agree with statements made about the vette master cylinder. Will eliminate alot of issues of making your brakes work. Larger brake boosters, or even hydroboost will help even more in the stopping dept.
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Quando Omni Flunkus Moritati. The Man's Prayer: "I'm a man, but I can change, if I have to, I guess." Last edited by masterbeavis; 06-18-2006 at 01:05 PM. |
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#18 |
Registered User
Join Date: Mar 2005
Location: Just outside Durham, NC
Posts: 894
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Re: Eaton Rearend Swap?
sorry longhorn, just re-read his first post, the 71 was the donor axle, not the truck....
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1969 SS 350 Camaro Sold 2008 1970 3/4T K20, stock height with 33's, 250 I6, 3 on the tree, and locked front and rear 4.10's ![]() 1980 Chevy Malibu 2 dr Sold 2007 1993 Olds. Cutlass Ciera Wagon Traded 2006 2003 Saturn L200 w/5pd. D/D My list spans 5 decades with One common thread.....GM! Last edited by shelby987; 06-18-2006 at 07:17 PM. |
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#19 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Eaton Rearend Swap?
if it makes you feel better... I had to read it 3 times before I realized where the problem was.
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