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Thread: HELP-Closed chambered heads and using Open chambrd pistons

  1. #1
    Junior Member APPRENTICE
    Join Date
    Mar 2005
    Posts
    13

    HELP-Closed chambered heads and using Open chambrd pistons

    Got a set of closed chambered BBC rect 291's that have been opened up (measure at 109CC) and I've got a new set of Speed Pro (TRW) L2308AF30's that I would like to use. It's a pro-street car so I would like to try to stay below 12 to 1 CR. Does anyone know where to cut and/or how to take some of the dome off ??

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    Feb 2004
    Location
    san antonio, texas
    Posts
    1,233
    you need a "mill" and wiegh each one for balance, i took mine to
    a machine shop and they did a good job, w/closed chamber heads,
    flat tops work well, are you going to run racing fuel on the street
    if you run 12: to 1, does your cam match the compression?
    :wink: good luck


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