Thread: looking for advice building large cubic inch sbc
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Old 10-08-2007, 12:49 PM
  #14  
davebat
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JUNIOR BUILDER
 
Join Date: Aug 2007
Location: Bedford, Ohio
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420.3 CI, this is based on 4.155 bore and the stroke of 3.875, the rod length does not effect the CI, but does allow for the use of cheaper gas as pistons stay at top dead center longer.
Your chambers also will effect the CI
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