FireHead Posted January 22, 2009 Report Share Posted January 22, 2009 That I know of the biggest small blocks start at 75mm on first bore and end at 77mm on last bore. The big blocks can be had with a larger bore............... Yeah, I might have mispoke for the publicly available stuff. 71mm and 75mm are the two numbers I should have said. Quote Link to comment Share on other sites More sharing options...
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