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12-15-2013, 03:55 PM
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Junior Member
Join Date: Jan 2011
Posts: 52
Likes: 1
Liked 1 Time in 1 Post
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chevy iron head
in modified class -you can run any cast head as long as it has in my case a gm casting number.the 4446 vortec looks best for the class with a 10.5 weight per cube and a 366 cube limit and a 3300 car-.Can you all give your opinion and advice ------THANKS-- FIREBIRD
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