how much difference does it make between a 7" brake booster and an 8" one? can a master cylinder/brake booster system thats from a car with front and rear discs work on a car with front disc/rear drums, if proportioning valves are used?? ive seen big cars that used master cylinder/boosters from small cars like a geo metro, is this a good thing to do/bad thing to do? im switching over from drums/drums and a single master with no power brakes so i think anything will be better that what im used to. i think that the bigger the booster the more 'power' you have in the power brakes. is this right??? thanks.
I dont think ya could tell that little a difference-'61......Id have to venture this guess-a larger booster would require more vacuum so it may feel slower in its action???? If your car weighs 3500 or under Id say a 7" is a fine choice
can a master cylinder/brake booster system thats from a car with front and rear discs work on a car with front disc/rear drums, if proportioning valves are used?? this right??? .[/QUOTE] you should use only masters that are designed for the given application disc-disc, disc-drum ect... 4 drum masters dont have the fluid capacity to work 4 disc, or disc -drum. its pretty simple if you look at the factory designs.to get a good bead on brakes and how to set em up, order a catalog from Master Power Brakes, its full of great info. and its FREE!
an 8" booster has nearly twice the area of a 7" booster, it will make a big difference. A stock 61 booster was nearly 10"
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