604- purpose of ports

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  • steelkiwi75
    Senior Member
    • Sep 2007
    • 366

    #1

    604- purpose of ports

    on the front of the intake there are two holes right under the thermostat housing. one looked to be 1/2 or 3/4 and the other 1/4 or 3/16. whats their purpose? also do you run the thermostat provided or what size restrictor is best?
  • steelkiwi75
    Senior Member
    • Sep 2007
    • 366

    #2
    noone will answer my questions

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    • dirty white boy
      Senior Member
      • Dec 2008
      • 1238

      #3
      this info is being discussed a few threads down the bored by very knowledgeable folks...
      white trash motorsports

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