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Old 05-25-2016, 07:53 PM   #1
JAKA
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Join Date: Apr 2009
Location: Murray,KY
Posts: 39
Master cylinder ?

I have a 86 K10 that I'm swapping out the axles from a K20. Rear is a 14b full float and the front is a 44. I'm keeping the drum brakes in the rear. Will my original master cylinder be fine or should I look at something else? What have you guys that swapped axles used? THANKS.
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Old 05-25-2016, 11:07 PM   #2
Zoomad75
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Join Date: Mar 2004
Location: Pueblo, CO
Posts: 1,513
Re: Master cylinder ?

The stock master will run the 14ff brakes. I'm using a stock master with mine. No problems.

To take advantage of the bigger brake drum diameter on the 14b, switch from vacuum boost to hydro-boost. I've got that in my plans.
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1975 K5 350/465/205/D44/12b 4" lift on 35's- RIP
1991 K5 8.1L/NV4500/241/D44/14b FWC Camper
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Old 05-26-2016, 06:51 AM   #3
JIMs70GMC
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Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
Re: Master cylinder ?

I kept my stock 86 K5 master cylinder after I swapped in the CUCV axles. I also kept the rear 13" drum brakes. When I go to crossover steering I will upgrade to hydro boost at the same time.
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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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