Quote:
Originally Posted by screamingchief
Power brakes when handicapped with a marginal vacuum supply is often inconsistent and unpredictable,thus somewhat unreliable.
My '72 firebird is a factory manual disc/drum brake car,and it only had a lowly 350 2bbl. in it.
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I agree Bret. I wish mine came with manual brakes since that would solve my vacuum issues. Also it's easier to stop a "lowly 350 2bbl" than a 455 4bbl. My LSA is 110 and 248 intake at 050. (if I remember right) I didn't think I would have an issue.
I didn't mean to get side tracked. Back on topic..... I've heard it said that 240 is the max for power brakes. I think more things are involved like someone said LSA, cu. inches, etc.
__________________
.....Carl
Houston TX
1969 Firebird Conv. owned since 1987
My block is an XT which is a 350 in 1969 and a 455 in 1973. Solid roller with factory valley pan. SD Performance iron heads flowing 260cfm@600. 4spd Muncie with 3.23 posi rear end.