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  1. #1

    Default Need some help, going to throw procharger P-1SC1 on 2007 silverado ext z71.

    I need some help before I go to do this, its a buddy's silverado. He has a 2007 White Silverado ext. Z71 and has the 5.3L. So I have a few questions... What is the compression ratio on this motor? Also what should the compression ratio be for 10PSI? His purpose for the truck is weekend off roading and daily commuting, just looking for a bit of extra power.


    I forgot to mention its a 1500 GMT900
    Last edited by 1_SIK_SS; 06-29-2010 at 11:54 PM.

  2. #2


    is that the full kit with the innercooler?
    1986 Chevy G20 Tow Rig - 5.7 TBI conversion
    1978 Mustang II King Cobra Road Racer - Holley 650, MSD 6AL, 5 speed, 10 point Roll Cage, 9" posi, fuel cell, custom interior.

  3. #3


    Quote Originally Posted by dualdj1 View Post
    is that the full kit with the innercooler?
    yes it is:D

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