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Thread: Procharger P1SC on a LS1

  1. #1
    Junior Member
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    Default Procharger P1SC on a LS1

    I got a LS1 from a Camaro 1999 that I fitted a Procharger P1SC kit from a Pontiac GTO 2005 LS2 on. Should be a 7psi setup.

    I wonder how your boost curves looks like?

    When I log I can see that the boost rises from 3500rpm to 6200rpm and is max 140kpa at the top.

    I would think that I got more boost than 7psi because its a smaller engine with less power than the LS2. I suspect a leak somewhere?!?

    Pictures here http://www.hocky.se its the Volvo 242.

  2. #2
    Junior Member
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    Default

    Why should you get more boost? Have you changed the pulley or the crank pulley?

  3. #3
    Lifetime Member
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    Default

    A smaller stock engine flows less air and therefore will usually have more boost because it acts as a restricter. Same thing when you go to a larger cam, your boost will drop.

    Lee

    230" Dragster - 2000 LS1, 02020003 Speed Density, PRC 2.5 Heads,
    MS3 Cam 237/242 .603/.609, Vic Jr. intake, Holley 1000CFM TB,
    PowerGlide, 5000 stall converter. 8.70@154 MPH

    My Projects Homepage: http://www.horsepowerracing.com

  4. #4
    Lifetime Member SSpdDmon's Avatar
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    Default

    ~95kPa = normal WOT for N/A car (atmospheric)
    extra 45kPa = 6.5psi of boost

    1 of 3 things:
    This is what this setup makes.
    There's a slight boost leak somewhere.
    The belt on the Procharger is slipping.

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