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#551 |
60-66 Nut
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Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Disc Brake Upgrade Reference Thread
The '63-'66 booster bracket will not work on a '67-'72. Unlike all of the big name parts sellers, I make booster brackets that are a direct fit for each specific year range of truck.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#552 | |
Registered User
Join Date: Sep 2007
Location: Katy TX
Posts: 1,268
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Re: Disc Brake Upgrade Reference Thread
Quote:
The 67 has an LS in it and they mounted the factory computer on the fender which is right in the way of adding a booster. Always something with these upgrades!
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![]() Slammed 53 5 window Blown/Bagged 54 Pickup Patinaed 67 LS stepside Supercharged 67 Nova Bagged 69 Suburban Turbo'ed 5.3 LS |
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#553 | |
Registered User
Join Date: Sep 2007
Location: Katy TX
Posts: 1,268
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Re: Disc Brake Upgrade Reference Thread
Quote:
Trying to take the easy route before figuring out all the disc brake and drop spindle options out there. I just want to drive the truck with out manual brakes for awhile as I determine my next upgrades. Thank you for your assistance
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![]() Slammed 53 5 window Blown/Bagged 54 Pickup Patinaed 67 LS stepside Supercharged 67 Nova Bagged 69 Suburban Turbo'ed 5.3 LS |
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#554 | |
Registered User
Join Date: Sep 2007
Location: Katy TX
Posts: 1,268
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Re: Disc Brake Upgrade Reference Thread
Quote:
Trying to take the easy route before figuring out all the disc brake and drop spindle options out there. I just want to drive the truck with out manual brakes for awhile as I determine my next upgrades. Thank you for your assistance
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![]() Slammed 53 5 window Blown/Bagged 54 Pickup Patinaed 67 LS stepside Supercharged 67 Nova Bagged 69 Suburban Turbo'ed 5.3 LS |
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#555 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Disc Brake Upgrade Reference Thread
Please be patient. I only have time to log into this forum once a day after I get home from my 10-12 hour work day. I always reply to all PM's. I replied to your PM from this morning.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#556 |
Moderator
![]() ![]() Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
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Re: Disc Brake Upgrade Reference Thread
I found this informing thread: http://67-72chevytrucks.com/vboard/s...57&postcount=3
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Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
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#557 |
Registered User
Join Date: Jul 2006
Location: Norfolk VA
Posts: 1
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Re: Disc Brake Upgrade Reference Thread
Can anyone tell me the fix to the positive camber problem that stems from using the 88-98 spindles on the 68 crossmember? I did all the steps and used the parts from the thread and my truck has HUGE positive camber without any shims. There was another thread that discussed this problem but no fix was explained. In my mind either I need to switch to 73-87 upper control arms and use the MOOG offset cross shaft to move the upper control arm inward or relocate the upper ball joint inward.
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#558 | |
Registered User
Join Date: Dec 2014
Location: Victoria B.C.
Posts: 3
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Re: Disc Brake Upgrade Reference Thread
Quote:
You dont need the cross member .. unless you changed yours.. i have a 68 c10 and a 68 c20.. the upper and lower from the square bodies bolted right up to my 68 c20 cross member.. and it measured up with the c10 also.. and the guy at the allignment shop said hes never seen one of the old trucks line up so well! So thats a perk.. If you plan on dropping the thing.. just buy the spindles and rotors you want online.. i had a low budget after rebuilding the 98 parts.. just know that there is a known clearance issue with stock rims hitting the brake caliper if you lower it.. the spindles and discs usually cost extra at the used yard.. and rotors are usually rusted to **** from sitting.. but the calipers are wort pricing the core on.. having old ones you picked up for 20 each saves the core of 40 each.. (im canadian.. pricing is likely off for you) if you buy used spindles.. inspect them for wear.. Hope this helps.. |
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#559 | |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Disc Brake Upgrade Reference Thread
There are posts on page 16 of this thread recommending against using the '88-'98 LD 2500 spindles and rotors for 6 lug discs, due to this issue being discovered. I do not currently have an easy solution for this issue. A shorter upper control are would certainly help.
Quote:
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#560 |
Registered User
Join Date: Dec 2016
Location: Oklahoma City, Oklahoma
Posts: 14
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Re: Disc Brake Upgrade Reference Thread
Hey Guys, I have a 66 Gmc Burb that i used a 77 c10 donor for the conversion. Aftermarket 2" drop spindle 6 lug. I am having an issue with my turning radius. I am hitting the spindle stop to the left, but turning right stops way short. its like the steering box is maxed out and wont turn any further to the right. Any Ideas?
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#561 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Disc Brake Upgrade Reference Thread
If you also installed power steering, the turning radius needs to be adjusted/equalized due to the thickness of the steering box adapter plate. This is typically done at the same time as an alignment.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#562 |
Registered User
Join Date: Dec 2016
Location: Oklahoma City, Oklahoma
Posts: 14
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Re: Disc Brake Upgrade Reference Thread
Ok, thanks for the info. I own a custom upholstery shop so I'm a wiz inside the truck. Its everything else that confuses me.
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#563 | |
Registered User
![]() Join Date: Sep 2006
Location: San Francisco
Posts: 4,780
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Re: Disc Brake Upgrade Reference Thread
Quote:
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"A man and his truck, what a beautiful thing" 65 Short Fleetside BBC 65 Long Fleetside 283 3 on the tree for now. my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536 |
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#564 | |
But Found Her 25yrs Later!
![]() Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,525
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Re: Disc Brake Upgrade Reference Thread
Quote:
The way I thought to solve it was to get your wheels pointing straight, then remove the pitman arm from the steering box, then turn the steering wheel one way until the power steering box hits stop, then turn the steering wheel the other way - counting the rotations - until it hits stop, then turn it again back the other way - counting the rotations - half the total rotations stop to stop, then reinstall the pitman arm to the steering box. Now you'll have the same turning radius both directions. That's how I thought it was to be done.
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#565 |
Registered User
Join Date: Apr 2005
Location: Columbus, OH
Posts: 197
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Re: Disc Brake Upgrade Reference Thread
Hi fellas,
I'm about to do a 73-87 (1991 Suburban junkyard front end; 88-91 Suburban = 73-87 pickup front suspension) front crossmember swap on my 62 GMC big block V6. The 60-62 ball bearing wheel bearings may as well be obsolete as the only available replacements are inferior quality and will burn up frequently, ball joints are OBSCENELY EXPENSIVE & getting scarce (& mine are worn out), and I got a nice set of 5 lug American Racing Torque Thrust D wheels and had my rear axles welded up, machined smooth, and re-drilled for 5 lug. So a 5 lug front with readily available parts, disc brakes, and a sway bar is a welcome upgrade without a doubt. Here is some great info for this conversion: http://67-72chevytrucks.com/vboard/s...54#post4432154 and specific swap photos/info for a 60-62: http://67-72chevytrucks.com/vboard/s...d.php?t=366850 I also wanted to point out for those looking for a 6 lug rear disc setup, modern Dana 44's on Isuzu Rodeo's (also rebadged as Honda Passport?) from 1993 or 1994+ or maybe it was 1998, are 6 lug on 5.5" and these can be swapped onto our rear ends with a little modifying of axle register or rotor hole, and bolt pattern adjustment to backing plates, and actually the whole rear can be swapped and is a slight bit narrower than the GM corporate rear ends from later models, so this is a welcome thing for the early model 60-66 trucks that use a narrower width rear. IF someone has a rear end needing replaced. Of course suspension mounting points would need to be fabbed/modded. Then you can do the front end swap and use 6 lug aftermarket rotors if needed. I also would like to point you towards a GMC truck Dana 44 rear end disc brake conversion thread that I started, and compiled a ton of info on, for late model Dana 44 rear brake setups with integral rotor hat drum parking brakes, vs the now getting scarce old Cadillac Eldorado/Seville Riviera Toronado & WS6 Trans Am rear disc calipers with the mechanical worm gear parking brake actuator assembly built into the hydraulic piston. These have been very popular for swaps, but are getting scarce and with expensive core charges, but using some big ford 9" application brackets for these calipers, can be bolted directly to the Dana 44 GMC rears. https://6066gmcclub.com/showthread.php?p=71172
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Chuck in Ohio *1962 GMC 1000 Panel Truck - 305D/Saginaw 4sp soon: 351C V6 + AX15 5sp OD trans, & 75-87/91 disc brake front end *1988 Suzuki Samurai 4x4 project, VW 1.9L mTDI, Toyota R151F transmission & Toyota full floater axles, LWB body tub stretch project *Many 1977-1979 Suzuki GS motorcycles, Kawasaki KDX220R, '77 Suzuki PE250, etc |
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#566 |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
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Re: Disc Brake Upgrade Reference Thread
For a 1963 C20, is it possible to just use the parts from a 1987 3/4 ton, rather than swapping out the entire front end?
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1963 C20, small window, long bed 292, 4-speed |
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#567 | |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,964
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Re: Disc Brake Upgrade Reference Thread
Quote:
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#568 | |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
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Re: Disc Brake Upgrade Reference Thread
Quote:
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1963 C20, small window, long bed 292, 4-speed |
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#569 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Disc Brake Upgrade Reference Thread
The unknown is whether the '71+ C20 disc brake lower ball joint will press into the '63-'66 C20 lower control arm. I have one person that told me that he did it, but I have not confirmed this myself.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#570 |
Registered User
Join Date: Apr 2001
Location: DALLAS,TX
Posts: 21,964
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Re: Disc Brake Upgrade Reference Thread
It was just a single post that referenced the answer to your question.
A complete x-member swap is not required. One can swap over the disc brake required parts to a drum brake truck for the upgrade on both 1/2 ton or their heavier duty 3/4 & 1-ton counterparts. Required parts would be new replacement wearable pieces (BJ's, TRE's) as well as possibly needing the later a-arms & other possible items vs. just swapping BJ's to the existing arms.
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67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... Cubic inches is like Indiana Jones with a cheap pistol. |
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#571 |
But Found Her 25yrs Later!
![]() Join Date: Oct 2010
Location: Oregon City, Oregon
Posts: 10,525
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Re: Disc Brake Upgrade Reference Thread
I didn't think swapping out the front crossmember was a complex task at all. Now all my front end parts are all 1979.
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I lost my 65 - Found it 25 years later: http://67-72chevytrucks.com/vboard/s...d.php?t=426650 66 C20 Service Truck: http://67-72chevytrucks.com/vboard/s...d.php?t=428035 |
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#572 |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
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Re: Disc Brake Upgrade Reference Thread
So, here’s my understanding so far.
If I want to keep my C20 ¾ ton truck 8-lug, and NOT install a complete crossmember, I can use the parts from a 7-87 C20. This would include: • Lower ball joints (not sure if they will press into 63 LCA) • Spindles • Tie rods • Rotors • Calipers • LCA from the 73-87 cannot be used on the 63 • Upper ball joints from a 63 are ok to use However, if I buy after-market spindles (not sure if this is a kit?) then I do not need to change the ball joints or the tie rods. I can use what is standard on the 63. If this is the case, I would probably need to buy the after-market rotors and calipers that fit these after-market spindles. This is my interpretation of the info from the FAQ: "Drum to Disc" conversions 63-66* ________________________________________ DRUM TO DISC CONVERSIONS 63-66 63-66 truck with: 63-66 Crossmember Installed: 1) There are many advantage to leaving your 63-66 crossmember in place to add disc brakes. 2) 63-66 truck owners can now purchase "year specific" standard and drop spindles, from many aftermarket suspension vendors. * No need to change ball joints. * No need to change tie rod ends. * These new "conversion disc brake spindles" are a true "bolt-on" mod to add disc brakes to your truck. 3) The 63-66 a-arms can also be used with any other spindle (71-72 or 73-87) with a simple ball joint change. * The upper and lower ball joints and outer tie rods must match the correct year of spindle you choose. 4) You will need a "conversion" rubber brake hose to connect your disc brake caliper to your existing steel brake line. 5) Keeping your original 63-66 crossmember allows to to leave the engine and transmission in place. * No need to remove drivetrain. * No need to temporarily support the engine, while removing the crossmember. * Complete disassembly of the front suspension also allows you the ability to clean, inspect, replace or rebuild all the individual components. Links: *http://www.classicperform.com/discdrop.htm *http://www.earlyclassic.com/Tech.asp...20That%20Truck *http://www.customclassictrucks.com/t...all/index.html ********************************************************* *********************************************************
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1963 C20, small window, long bed 292, 4-speed |
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#573 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Disc Brake Upgrade Reference Thread
Today I contacted the forum member that said that he used the disc brake lower ball joint in a '63-'66 C20 lower control arm and he verified that it did indeed press into the LCA. He is someone that I trust with accurate info.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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#574 |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
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Re: Disc Brake Upgrade Reference Thread
Did he say what part number? Was it part of a kit?
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1963 C20, small window, long bed 292, 4-speed |
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#575 |
60-66 Nut
![]() ![]() Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,247
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Re: Disc Brake Upgrade Reference Thread
He is going to get back to me on the part number of the lower ball joint. No he did not buy a kit. There is no need for that when you can simply buy all the parts at your local auto parts store except for the spindles. As far as I know it is just a '73-'87 C20 lower ball joint........they are all the same.
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Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE |
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