performance gains

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  • phantomgreen
    • Dec 2006
    • 78

    #1

    performance gains

    Hey, does anybody know what sort of gains to expect from ported intake manifolds on a fairly stock dohc. Not necessarily raw numbers, but does it feel different.
  • RedZMonte
    • Feb 2004
    • 1378

    #2
    ported intakes i would expect about 5-10 peak Hp if done properly
    Shane "RedZMonte"
    2004 Corvette Z06 Commemorative Edition -VIRGIN
    1995 Monte Carlo Z34 14.38@101mph, 331hp/355tq
    -Turbonetics T04E Super 60 Turbo, 2.5" Borla Catback, OBDII, 42.5# Injectors
    2004 Subaru WRX STI -Lightly Modded (SOLD)
    1994 Lumina Z34 -VIRGIN (SOLD)
    1992 Lumina Z34-VIRGIN (RIP)
    1992 L67 Lumina Z34 (SOLD)
    1990 Turbo Grand Prix (SOLD)

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    • z34phoenix
      • Jun 2005
      • 469

      #3
      yeah if done right i would estimate 10hp
      and as long as you dont over bore it, you will feel an increase in Tq aswell.

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      • OldSkoolGP
        That guy over there
        • Oct 2003
        • 930

        #4
        What you will feel a lot more of too is throttle response, which always rocks. But yes, overboring can cause a decline in low rev power. Cleaning everything up nice though will be a nice boost.
        I may own a GTO now, but I'm still a 60V6er at heart.

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        • toms92gp
          • Apr 2007
          • 49

          #5
          Yeah the inside of the intake manifolds from the factory looks like a 13year old with a bad case of acne.

          http://www.cardomain.com/id/toms92gp
          http://www.nightrydas.com/theprix.htm

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