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max lift

This is a discussion on max lift within the Internal Engine forums, part of the LSx Technical Help Section category; what is the max lift that can be used in a stock ls1 before you have p to v clearance ...

  1. #1
    Junior Member
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    99 firebird formula

    max lift

    what is the max lift that can be used in a stock ls1 before you have p to v clearance issues.

  2. #2
    cutting and welding mark21742's Avatar
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    hugger orange
    2004

    A lot depends on duration, cam timing and ramp speed.

    I ran a 238/242 .595/.595 112lsa in my 346 with .040" milled off the heads and when I later pulled the heads back off you could see where the valves just touched the stock pistons.

  3. #3
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    It is more dependent on valve event timing than lift.

    Measure. Only way to know.

  4. #4
    Veteran Blackbird WS6's Avatar
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    bigger is not always better....plus the stock heads suck

  5. #5
    Junior Member
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    Onyx Black
    2001 Camaro

    Quote Originally Posted by Mr. Luos View Post
    It is more dependent on valve event timing than lift.

    Measure. Only way to know.

    This^^^

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