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Thread: Big Chief Heads

  1. #1

    Big Chief Heads

    Has anyone used the Dart Big Chief Heads on a BBC with 4.94 inch bore spacing?

  2. #2
    They will not fit without substantial and expensive modification.

  3. #3
    Senior Member RACING JUNKIE TheRabbit's Avatar
    Join Date
    Jan 2007
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    Augusta, Ga.
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    2,295
    You talking about 18* Big Chiefs? If so I don't think you would gain anything on a 4.9 vs a 4.84.
    11* Maybe, but I wouldn't spend the money to try it. You's be better off with a true 4.9 bs head or even better a 5.0 head on a 4.9" motor.
    One of our classes has an iron block rule which is why they don't use a 5.0 alumium block.


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