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05-10-2004, 04:15 PM
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#3 |
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Rat Killer
Join Date: Aug 2002
Location: Cold ass Ohio
Posts: 1,143
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Yes, new valve seats!
A C9 casting number is 1969 Fairlane or Torino for sure. HAVE to take care of the valve seat issue! No choice in the matter, sorry dude. You should notice a moderate increase in performance due to the better flow, bigger valves, etc etc. Cam is up to you, if it's a stock motor other than these heads, and a good intake, I'd go with about .480" lift or so.
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d-Con Racing "Nothing fancy, just 347 inches of RAT POISON!" MICE need not apply..... 
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