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brake booster

3K views 3 replies 3 participants last post by  PAULWELDIT 
#1 ·
I have just installed a 8" brake booster. Will the travel of the pedal be different than that of a 7" booster? Will 18" of vacuum at idle be good enough?
 
#2 ·
The travel is the same for most boosters. !8 is plenty of vacumn for a power brake booster. ROY
 
#4 ·
A word of caution --when using a late model booster be sure to use a late master cylinder--cast iron m.c.'s with early boosters--aluminum m.c.'s with late boosters--the rubber caps in booster where the master cyl.seats are different. It will make a almost undetectable vacumn leak with all kinds of weird brake pedal problems. Some Corvette cast iron m.c.'s will work fine but check it out first.
 
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