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#1 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Most of you know I have the 67/68 Ramp truck. I've upgraded the front end to a 86 disc brakes. I want to up grade the rear end now. But I have no idea what I need to do it. Any info is appreciated on what to look for and what to call it.
The dually rear end has no E brakes and it's a pain to load sometimes and park it on hills. I really would like some good instructions on what I need to look for in a yard to get e brakes on this thing. Would it be worth it to find a late model rear end with all the brakes still in place on it are just buy the parts for what I have? If anyone has links for parts would be great. ![]()
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#2 |
Registered User
![]() Join Date: Aug 2019
Location: Cheraw
Posts: 1,305
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Re: What do I need??
My 2 cents is to up grade what you have. Several Sat. morning TV shows show up grading the rear brakes lately.
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#3 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#4 |
Registered User
![]() Join Date: Aug 2019
Location: Cheraw
Posts: 1,305
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Re: What do I need??
What year do you have? I know of a c-30 dually ( think its a 68) in a junk yard near me I can go look at it for you.
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#5 |
Mr. Cheyenne
![]() Join Date: Jun 2020
Location: Kyle, Texas
Posts: 1,688
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Re: What do I need??
that's service for you - nice - love this forum!
though when I saw the title, I thought to myself... I don't know what you need but I need a million dollars!
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Richard '72 Chevy C10 Cheyenne *Super WHT/MED BRONZE/WHT SBC 350 | TH350 | LWB | AC | Buddy Seats Upgrades: Tilt | Front Sway Bar | Radio | Sliding Window | Bed Spare w/Lock Bed Rails | Full LEDs | Courtesy Lights | Tachometer | Glovebox Lock & Light | Head Light Relays | *Upgraded Fully Super Trim |
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#6 |
Registered User
Join Date: Aug 2014
Location: Mena,Arkansas
Posts: 485
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Re: What do I need??
Not sure but it looks a lot like the Corporate HO52 rear I used to have in my '68 3/4 ton. I swapped mine for a 2002 14bolt with disc brakes. I went that route because my old rear needed a lot of parts and some were hard to find/expensive. The used rear was $150.00 at the salvage yard plus my labor. I did have to have the drive shaft shortened. I am happy with it. Went from a 4.56 gear to a 3.75. Not sure on the width of the dual wheel axles but mine was about three inches wider than the old one. If your rear is in good shape you may want to stick to just the E-brake parts. I kind of panic when my truck is down for too long. I tend to use it every day.
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68' with no bells or whistles unless I add'em. |
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#7 | ||
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#8 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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I went out and cleaned up some numbers on the center section. Anybody care to explain what they are and mean.
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#9 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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Well it looks like it's a GM HO72 rear end from what I have found on here and been told on face book from our truck club guy's. Per this thread I found my pictures show the same numbers as RPOZ11 posted on his in his thread.
![]() https://www.67-72chevytrucks.com/vbo...d.php?t=714492 I found this convert kit also for it with E brake. $605.00 though. Still have to find the cables for it. Surely I can find the E brake stuff for mine cheaper than that! ![]() https://lugnut4x4.com/product/dual-rear-wheel-kit/
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#10 |
All about them K’s
![]() Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,375
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Re: What do I need??
The problem with using the disk kits like above is that they mostly use the Cadillac eldorado calipers which are not very strong or reliable. If it was me and you wanted to go to disks I would look for an aam 11.5 from an 01-09 Silverado with a duramax or 8.1 and a dual rear wheels. Having said that, this is how I put late model disks on an older 14 bolt. This method should work for your HO72 as well but it’s not the cheapest method especially with out a donor axle. The benefit is that you don’t have to move perches and shock mounts like you do the late model swap. I mostly did this swap to be different and because I could...
The late model e brake setup is much better than the eldorado e brake caliper setup mentioned above. http://67-72chevytrucks.com/vboard/s...d.php?t=816377
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Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's ‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue ‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0 ![]() Last edited by 57taskforce; 02-05-2021 at 03:42 PM. |
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#11 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. Last edited by Andy4639; 02-05-2021 at 03:19 PM. |
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#12 |
All about them K’s
![]() Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,375
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Re: What do I need??
Fixing what you have is definitely the most cost effective thing to do if you aren’t dead set on disks.
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Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's ‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue ‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0 ![]() |
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#13 |
Registered User
Join Date: Aug 2014
Location: Mena,Arkansas
Posts: 485
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Re: What do I need??
HO 72 sounds right. my brain does not work well with numbers. I think the full floater 14 bolts from AAM are factory discs after 2000 on the silverados but not sure about the duallys.
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68' with no bells or whistles unless I add'em. |
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#14 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,151
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Re: What do I need??
You could get an old-school hydraulic brake lock that would hold the rear.
https://www.mico.com/products/lever-lock Depending on transmission might be able to put a park-brake band on the output. I've seen them on 4-speeds in C50 kind of trucks. Maybe adaptable?
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#15 | |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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![]() Quote:
Out of their manual for the lever lock: Set vehicle park brake. Then apply lever lock to full on position. To release move lever back to full release position and release park brake. ![]()
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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#16 |
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,936
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So from what I'm reading, there is no difference what ton the truck is, if it has the HO72 rear end all the parts are the same per this site any way.
GM 12.25″ HO72 REAR, TAPERED PINION BEARING FOR LOAD BOLT DESIGN COMPATIBLE WITH MODELS C20 3/4 Ton (2WD) (1960 - 1972) C25/ C2500 3/4 Ton (2WD) (1960 - 1972) C30 1Ton (2WD) (1960 - 1972) C35/ C3500 1 Ton (2WD) (1960 - 1972) Suburban 3/4 Ton (1960 - 1972) Suburban 3/4 Ton (1960 - 1972) ![]() https://www.randysworldwide.com/diff...d-bolt-design/
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1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 ![]() Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
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