Ok so here goes nothing ! I just bought this 1956 Chevy 3100 it has about 4-6in of lift an 8 lug Dana 60 in the rear and a stock 8 lug straight Axel up front with 285/75r16 on it looks cool every one swears its a 4x4 but anyways the guy i got it from had just put a power brake booster on it , and told me the pads just needed adjusted well i did that and had all the drums turned replaced both front wheel cylinders and still have little to no brakes ! The vacuum is hooked up to the intake like all Chevy v8s i have had , i have bleed them 2 with a phoenix bleeder and still nothing ! Now i dont have a proportioning valve in it , but doe sit need one ?? O ya and also it seems to only have brakes on the right rear ?? iam stumped never had to deal with power drums !