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Old 09-24-2003, 12:31 PM   #5
superchevy
Got big-block?
 
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Join Date: Jul 2000
Location: Austin, Texas
Posts: 2,453
You use the square port gaskets. They'll cover the oval port on the head and match the port on the intake. You're going to get some airflow reversion issues, but, depending on who you talk to it's not a big issue - at least so says the engine shop that built my 468 ( which is oval/oval). I'm sure others will disagree.
SC
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