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Thread: sn93 blower pulley

  1. #1
    Senior SCH Member
    Join Date
    Jul 2003
    Posts
    101

    sn93 blower pulley

    i have a regular sn93 on my sn95 gt, yes i converted it =p

    anyway, im seeing like 4-5lbs max, that isnt enough. i know the sn93 can handle i think its 7-8lbs max, where would i be able to get an upgraded pulley, and what size do think i would be able to run?

    heres all the mods i have

    Cobra intake manifold
    K&N filter
    CHM fuel pressure regulator
    24# injectors
    1.7 crane cobra roller rockers
    Steeda underdrive pulleys
    Steeda 190 intank fuel pump
    Steeda tri-ax shifter
    Steeda #19 cam
    NOS booster pump
    Vortech fmu with 8:1 disc(blue)
    Vortech bypass off valve (blue+polished)
    Paxton sn93 supercharger
    Power pipe
    BBK 70mm throttle body
    Pro-Flow 75mm mass air flow
    NGK spark plugs
    MSD 8.5mm super conductor wires
    MSD blaster coil
    MSD 6al ignition
    MSD boost timing master
    Edelbrock performer aluminum heads
    Motorsport shorty headers
    Offroad h-pipe
    Flowmaster mufflers
    Fluidyne radiator
    Oil breather valve
    ARP head studs
    180 degree thermostat
    New timing chain and push rods
    3.73 gears


    4lbs of boost isnt enough, thats not even worth getting supercharged :'( i wanted to see about 7lbs or 8lbs... where can i get a new pulley, besides from craig @ paradise

    please reply asap!

  2. #2
    SCH Moderator "SN Guru" speedytang's Avatar
    Join Date
    Dec 2002
    Location
    Marengo, Ohio
    Posts
    2,028
    ASP sells them and you will need a 3.75" to see that much boost but your problem is going to be you fuel system. 24lb injectors and a FMU will not cut it. You need 42lb injectors and trash the FMU. You will have to many fuel peaks and lows that you will be wasting the boost with anything over 5psi. The 190lph pump will not be good enough without a secondary pump but it is just cheaper to put in a 255lph and yes that 65lph difference is major that is like having a stock pump and a 190lph put together at 50psi. With aftermarket heads you trying to fill the chamber of a better flowing head so getting the 7-8psi will push the SN past max. rpm with the 3.75" but it is the only way your going to make it and you might get belt slip with a 6 rib and still not make the boost. Not trying to sound negative but been using the Paxton for years with great success but you need to understand the units limit.

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