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  1. #31
    InActive Member


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    Quote Originally Posted by Fire67 View Post
    It would be on the ragged edge of safety for the motor, probably closer to the melt some shit down side of that 'fine line'.
    sounds like a good idea to NOT do.
    thanks for all your input - very educational.
    How do I go about determining what pullys I have?
    measure the outside dia or look for numbers on them?
    6200 would be my max rpm, and it's tuned for that.
    I want to be sure I have all the spin I can for boost.
    I believe I have the stock bypass too - need to follow the tubing highway on the car when I get a break from work..
    95 Z28 FORGED 355, JE 8.5:1 PISTONS, 230/239 - .530"/.546", 114 @ 110 CAM, stock heads, Pacesetter longtubes, 10 PSI from ATI P-1SC Procharger, 60#, 4L60E, Yank3600, 9" 3.73, ET Street 28x12.5x15, 3450lb

  2. #32
    10 Second Club


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    Josh Hamming
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    1996 Camaro Z28
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    Lee's Summit, MO (KC)
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    Quote Originally Posted by chief455 View Post
    sounds like a good idea to NOT do.
    thanks for all your input - very educational.
    How do I go about determining what pullys I have?
    measure the outside dia or look for numbers on them?
    6200 would be my max rpm, and it's tuned for that.
    I want to be sure I have all the spin I can for boost.
    I believe I have the stock bypass too - need to follow the tubing highway on the car when I get a break from work..
    The crank pulley would be 7.65". There should be a number stamped on the face of the blower pulley, which is the size. If there is no number,you would need to measure the diameter WHERE THE BELT RIDES, not across the shoulders.


    Josh Hamming
    1996 Z28
    8.503 @ 155.53 at the 2016 LTx Shootout

  3. #33
    LTX Master


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    The Lt1 kits either came with the 7.65 or an 8 somethin inch crank pulley....
    - Justin

    Custom tuning with HpTuners and your most common standalones.
    Quote Originally Posted by WJ Birmingham
    Boost... Makes good motors better, and bad motors junk. http://www.yellowbullet.com/forum/im.../icon_eyes.gif

  4. #34
    10 Second Club


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    Josh Hamming
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    1996 Camaro Z28
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    Quote Originally Posted by Fire67 View Post
    The Lt1 kits either came with the 7.65 or an 8 somethin inch crank pulley....
    Not really. They all come standard with the 7.65". The 8.5" inch is available, but is usually not needed, even when maxing out a P/D-series. They can come in handy with the F-series though.


    Josh Hamming
    1996 Z28
    8.503 @ 155.53 at the 2016 LTx Shootout

  5. #35
    LTX Master


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    I wish I had an 8.5" crank pulley. Then I could have used a larger diameter blower pulley to max the blower out. Which would have afforded more belt contact area on the pulleys and resulted in less slip.
    - Justin

    Custom tuning with HpTuners and your most common standalones.
    Quote Originally Posted by WJ Birmingham
    Boost... Makes good motors better, and bad motors junk. http://www.yellowbullet.com/forum/im.../icon_eyes.gif

  6. #36
    N2O Breathing Demented Tuner


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    Man an F1 seems like ALOT for only 10Psi.

    BTW boy I would listen to Josh. He MAY know a thing or two about ProChargers

    He knows enough He is researching a setup for us
    Ellis

    Faster Then a LS1!


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