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Thread: c/r help
          
   
   

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  1. #1
    seansz28's Avatar
    seansz28 is offline CHR Member Visit my Photo Gallery
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    Nov 2006
    Location
    missoula
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    c/r help

     



    what compression would i have with a set of Part# L2465F forged .200 dome .030 over

    30 over
    781 heads (stock except for polish)
    power plus cyclone manifold
    holley 3310(proform main body)
    th400 3.73's
    78 camaro 3600lbs.
    stock deck height
    street driven
    full length headers 1 3/4in. primaries 3 in. collector

  2. #2
    Grumpy 427's Avatar
    Grumpy 427 is offline CHR Member Visit my Photo Gallery
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    May 2006
    Location
    Regina canada
    Car Year, Make, Model: 1977 camaro
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    65

    I worked it out to be close to 10.0-1 thats with a .040 thick head gasket, and a .016 deck height. I think the 781 heads have a 118 CC chamber. I based this on a 454 too?
    9.65 @ 137 MPH 1.39 60' More left in the car.

  3. #3
    1JohnnyO is offline CHR Member Visit my Photo Gallery
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    Dec 2004
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    Hagaman
    Car Year, Make, Model: 71 Chevelle SS, 67 Camaro
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    I'll bet closer to 9.5, maybe a little less. Dont forget, stock deck hgt. Those are supposed to be at about 10.6/1 with 0 deck and 107cc chamber.
    When your dreams turn to dust, Vacuum!

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