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Old 02-09-2011, 05:55 PM
  #15  
hotrod1994
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Join Date: Jul 2009
Location: nekoosa wisconsin
Posts: 308
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yeah i was thinking 10:1 is about all ill get on pump gas but the iorn head is fine my dad ran a big block with 13:1 compression with rectangular port h.o big block heads so i think the heads are ok
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