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03-31-2002, 12:48 PM
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#1 |
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Registered User
Join Date: Mar 2002
Location: albany ore usa
Posts: 3
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disc breaks
anyone know what it take to change to disc for my 70gmc 3/4 ton and how hard it is?
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03-31-2002, 12:56 PM
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#2 |
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Livin' it up.
 
Join Date: Nov 2001
Location: Richland, MI
Posts: 2,212
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I did my 69 3/4 and it was pretty easy going. I got the whole front spindle/brake assembly off a 73 3/4 and it was pretty easy. You need the 73 ball joints and what not but other than that it's a pretty easy job. One thing though, you'll lose about 2" or so in ride height for the front. I'm probably forgetting some things but i'm sure someone will bring other stuff up...
------------------ 69 Custom 20, 396BB,Longbed fleetside. Just Installed Wood Bed... Gorgeous Edelbrock performer RPM-O, Edelbrock 750Carb, Headers, HEI. SN= Ares220
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-Greg; Sold the 69 C20. It's off to a better home with more love! Now onto the 86 CUCV M1009; K5 blazer with 6.2L diesel, corp 10 bolt axles, Detroit locker in the rear, trutrac front, 3.73 gears, 35" tires. 
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03-31-2002, 02:26 PM
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#3 |
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Registered User
Join Date: Mar 2002
Location: albany ore usa
Posts: 3
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Thanks for the info could one use disc set-up from a 71 or 72?
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03-31-2002, 04:39 PM
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#4 |
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Registered User
Join Date: Jan 2002
Location: Beaver County, PA
Posts: 46
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I have a '67 1/2 ton and used a front end off of a '72 3/4 ton. I had a wrecking yard cut the frame off at the firewall so that I had everything. I just unbolted the 6 crossmember bolts and put it up under my truck. Not bad for 6 bolts. I have bever done anything like that before it it went real easy for me.
You do have to disconnect the brake lines, steering and motor mounts before removing the x-member. I just left all the suspension, etc right on the x-member. It makes it heavy but saves a lot of disassembly, assembly time. E-mail of you have any further questions...
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67 LWB GMC 250 inline w/4spd manual Disc/power brake conversion |
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03-31-2002, 04:39 PM
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#5 |
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Shortbox wanna-be.
Join Date: Mar 2002
Location: Fort St.John, British Columbia, Canada
Posts: 773
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I am greatly interested in this also.
So I can go to the local wrecking yard, and pull the spindles, discs, and calipers off of a '73-'87 3/4 ton? I understand that I will need the newer style ball joints as well. But can I retain my control arms, or do I need the newer ones of those as well? What about a power system? Can I use the booster/cylinder from a newer model as well? Will it mount up? If not, what can I make fit? Will a new style disc system work with the manual system I now have for the time being? Thanks! Reid ------------------ Sylvan Lake, Alberta, Canada 1970 Chevy C20 Custom Camper #s matching 402BB Turbo 400 trans. Air conditioning, power steering, manual brakes. 73,600 Original Miles!!
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1970 Chevy C20 Custom Camper 402BB Turbo 400 trans. (Slowly becoming a '70 shortbox 1/2 ton) '71 Camaro SS 402/T400 resto '97 Z28 (11.41@127MPH) 
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