C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Power Brakes and vaccuum

Old 08-03-2001, 06:46 PM
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RocketSled
Burning Brakes
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Default Power Brakes and vaccuum

Is anybody aware of a 'typical failure mode' for power brakes? The sled has SOME assist, but there's no 'sucking' noise, like if the the diaphragm were ripped. The Booster is a reman unit and it's only about two years old.

Further, what's usual vacuum for idle? This thing's showing 14 inHg. at the resevoir under the left front headlight at 900 rpm.


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