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Don Quixote · 11-15-2017, 07:15 AM

I have a '72 C25 but the chassis from a '69 C30 that ran factory drum/drum vacuum brakes. Everything is the same. Just use the whole bracket, booster and MC and use your distribution block in lieu of a prop valve.

I actually left the front drums on mine when I swapped the frame out about 10 years ago because I was warping rotors whenever I pulled heavy trailers. I haven't had that problem since.

11-15-2017, 07:15 AM	#3
Don Quixote Registered User Join Date: May 2008 Location: Woodlawn, TN Posts: 275	Re: 1970 C20 4x4 brake help I have a '72 C25 but the chassis from a '69 C30 that ran factory drum/drum vacuum brakes. Everything is the same. Just use the whole bracket, booster and MC and use your distribution block in lieu of a prop valve. I actually left the front drums on mine when I swapped the frame out about 10 years ago because I was warping rotors whenever I pulled heavy trailers. I haven't had that problem since. __________________ Rocinante: 1972 GMC C25, 292, SM465, 14 bolt, power nothing, 440k and still handles my PCS moves Jorge: Kia Roller-skate with lots of buttons for the wife Wovoka: 2017 Indian Chief Vintage, better on gas but not much So far, this is the oldest I've ever been.