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Author Topic:   339x heads
0six
Member
posted June 29, 2004 07:53 PM
i found a set of 339x chevy heads are they any good to build for pure stock engine thanks


pipes
Member
posted July 10, 2004 11:01 AM
awesome set of heads for pure stock.
x means larger port volume .
will run out of air around 7400.
i seam to think chambers are 70-74cc


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