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C2 Power brakes

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  • Jeremy Hedges

    C2 Power brakes

    I have a '65 L-79 with power brakes and a mild cam. Is 11 inches of vacuum supposed to be enough to power the booster without interruption? Every once in a while I loose the power assist to the brakes. Wondering if it has enough vacuum or do I have a leak somewhere?

    Jeremy Hedges
    #31711
  • Duke W.
    Beyond Control Poster
    • January 1, 1993
    • 15610

    #2
    Re: C2 Power brakes

    I wouldn't describe a cam that only generates 11" of idle vacuum as "mild", however, the L-76 "30-30" mechanical lifter cam only geneates about 10"@900 and it was available with power brakes, so I don't think you're problem is lack of manifold vacuum.

    Duke

    Comment

    • Duke W.
      Beyond Control Poster
      • January 1, 1993
      • 15610

      #3
      Re: C2 Power brakes

      I wouldn't describe a cam that only generates 11" of idle vacuum as "mild", however, the L-76 "30-30" mechanical lifter cam only geneates about 10"@900 and it was available with power brakes, so I don't think you're problem is lack of manifold vacuum.

      Duke

      Comment

      • Donald T.
        Expired
        • September 30, 2002
        • 1319

        #4
        Re: C2 Power brakes

        I had a 64 L76 with power brakes years ago. Never had a problem with losing the power brakes as long as the car was running. Power was steady and constant within a couple of seconds of starting the car.

        Comment

        • Donald T.
          Expired
          • September 30, 2002
          • 1319

          #5
          Re: C2 Power brakes

          I had a 64 L76 with power brakes years ago. Never had a problem with losing the power brakes as long as the car was running. Power was steady and constant within a couple of seconds of starting the car.

          Comment

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