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Quick PTV ??

This is a discussion on Quick PTV ?? within the Internal Engine forums, part of the LSx Technical Help Section category; Anyone with a 240* .595 or bigger cam with stock heads and bottom end LS2. Did you check your PTV ...

  1. #1
    Don't be a dumb ass Damage Inc.'s Avatar
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    Brazen Orange Metalic
    '06 GTO

    Quick PTV ??

    Anyone with a 240* .595 or bigger cam with stock heads and bottom end LS2.
    Did you check your PTV and how was it?
    Did you check it with the hyd. lifter?
    Any problems?
    How did you correct them?

    Anyone know how much plunger movement there is in a stock hyd lifter?


    As you may have guessed by these questions I checked mine. I did not have a solid lifter or check springs. I'm close to .100 on the intake and over .100 on the exh. I'd like a bit more. I'm running stock head gaskets with a crush thickness of .051. I see Cometic has a .086 available, but I don't have time to change them before my tune on Sunday.

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    Don't be a dumb ass Damage Inc.'s Avatar
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    Brazen Orange Metalic
    '06 GTO

    No one, no one at all?

  3. #3
    Rockin the Ruckus! 02Sweet's Avatar
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    NBM
    2002 z28 camaro

    That is plenty of room. I would not be worried at all about that clearance

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    Don't be a dumb ass Damage Inc.'s Avatar
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    Brazen Orange Metalic
    '06 GTO

    Good morning bump

  5. #5
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    Metallic Red/Charcoal
    2000 Z28

    .85 and above is adaguate I'm told by the engine builders I know. If you could guaranty that you are not going to over rev and have valve float, LOL, you could get buy with .75.

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