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Old 01-22-2005, 11:26 AM   #1
BowTie Billy
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Brake Swap 70 K20 4x4

What do I need for parts to switch my 1970 K20 obsolete front drums to disc brakes. I have heard 71 up works but what is available? Any tips would be appreciated.
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Old 01-22-2005, 11:55 AM   #2
69C10
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Sorry that I don't have an answer, but I have the same desire. Except mine is a 69 C10, so I will be watching this thread.
JB
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Old 01-22-2005, 02:00 PM   #3
JIMs70GMC
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The easiest would be to find a 71 or newer front axle, period. Remember what it came out of for future repairs.
Now you could also swap steering knuckles out. Ball joints are the same. JB you can't do that because of your closed knuckles, you'll need a 71 and newer axle.

The brake hose fittings at the frame will be the same from the drum to disc.
I'm running a 70 master cylinder on my 71 and have no problems with the front disc.
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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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Old 01-22-2005, 05:33 PM   #4
Lobo'74
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I'm looking at going from manual drum/drum to power disc/drum on my '67. I have spoken with ABS brakes (they make the hydraulic kit that runs off the power steering pump - NOT the option I'm using).

The complete kit to go power drum/drum is $350, the kit for power disc/drum was quoted as $650. I am keeping the 6 lug, but I think its the same cost for 5 lug.

You can contact them at:
Info@abspowerbrake.com

I haven't ordered yet, but am planing to.

Is there any reason to go to power disc/disc brakes? I don't tow or haul heavy things(at least not very often), so I thought going to power disc/drum would be enough.
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