Thread: Big Bore small stroke big block chevy
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Old 08-03-2010, 09:44 PM
  #4  
Tod74
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RACING JUNKIE
 
Join Date: Sep 2007
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Does oem mean they had to come factory on a care,or does it just mean they must be GM HEADS? I ask because there are those older bowtie heads around that had huge ports...can't remember the casting number.
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