Re: upgrade for stock brake booster on 1970 C20 Camper
It appears that you already have the appropriate dual diaphragm booster and master cylinder for a 3/4 or 1 ton truck. If the booster and master cylinder are in good working order and your engine is generating sufficient vacuum, this setup should do the trick for you. I have a 1/2 ton Blazer which I upgraded with the same booster and master cylinder combination when I upgraded to 1 ton axles, and my braking improved tenfold. Swapping from 1/2 ton to 1 ton booster and master cylinder required new hard lines. But you will not need to do that. If you want even better braking, you can go to a hydro-boost setup used on many late model trucks and vans.
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