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Valve comparison 1st design vs 2nd design cyl. heads

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  • Valve comparison 1st design vs 2nd design cyl. heads

    After disassembling my 2 spare set of heads. I noticed a differance in exhaust valve shape. May be some potential gain's.

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    Here's the differance in the valve head. One is dimpled the other isn't.

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    Intake and exhaust both designs side by side.

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    1997 Z34 Monte,: testing 4 exh cam\'s, RSM STB, K&N, Eagle077 245/40/ZR18 Nitto Extreme
    1972 3/4 ton 4X4 longbed, built 350, 400 auto, 6\" spring lift, 35\" AT/BFG\'s, dana 60 front axle, 14 bolt gm w/detroit locker 4.56 gears. My ricer smasher

  • #2
    RE: Valve comparison 1st design vs 2nd design cyl. heads

    Damn, i know I have posted pictures of them but I guess it was lost or misplaced. I will flow the difference later on when I am doing DOHC heads. The dish will lower compression obviously. I forget what the cc difference is with them in there now
    Ben
    60DegreeV6.com
    WOT-Tech.com

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    • #3
      they should flow better.
      1997 Z34 Monte,: testing 4 exh cam\'s, RSM STB, K&N, Eagle077 245/40/ZR18 Nitto Extreme
      1972 3/4 ton 4X4 longbed, built 350, 400 auto, 6\" spring lift, 35\" AT/BFG\'s, dana 60 front axle, 14 bolt gm w/detroit locker 4.56 gears. My ricer smasher

      Comment

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