20 Year Member

James B.

TECH Fanatic

About Me

  • About James B.
    Biography
    Buy tools and learn vs., pay someone else.
    Location
    33.91° -117.48°
    Interests
    GM Trucks, Solar Energy, Metal Fabrication
    Occupation
    Datacenter Architect
    Country of Residence
    US
    Gender
    Male
  • Signature
    "James B."
    1997 K2500 Suburban 6.5L Diesel, 2000 Tahoe Limited, 1998 Suburban C2500, 1999 C1500 4-Door Tahoe, 1998 C1500 ECSB Silverado

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General Information
  • Last Activity: Jul 23, 2025 03:54 PM
  • Join Date: Mar 15, 2003

Friends

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Visitor Messages

Showing Visitor Messages 1 to 2 of 2
  1. James B.
    Feb 24, 2017 01:52 PM - permalink
    Hello, I just found this message... had no idea you sent it. Sorry about that. I had a 2.5" pulley on mine for a while, but that was with water injection and eventually intercooling. The supercharger is capable of the RPM but the pulley is so small you're going to get wicked belt slip. I was forever fighting that and there's just no solution with only 6 ribs. I settled on a 2.625" pulley and ran that one until the end. I don't know if you've had the heads off, just want to say the factory gaskets are a weak point, especially between the 3-5 and 2-4 cylinders where they get hot. I ended up with Cometic on mine. My biggest concern would be detonation. The 1.6L compressor will make 9psi on a stock-cammed 350 with a pulley that small. With cast iron heads and no form of intercooling you should not attempt more than 7psi. That would be about a 2.75" pulley. Even then you'll need to watch for detonation closely and tweak the timing advance to prevent it.
  2. 97ChevyVortec
    Apr 6, 2016 03:22 PM - permalink
    Hey buddy,
    Just curious but do you think I could run a 2.5 pulley on my whipple without water/meth injection? If not what kit do you reccomend for a daily driver 5.7 vortec whipple?

    Specs are:
    1997 Single cab pickup
    5.7 vortec
    whipple
    36# wynjammer injectors
    255 walbro pump
    2 bar map
    TR6 Plugs
    Accel coil
    8mm Wires
    160 thermo
    long tube headers
    X-Pipe true duals
    0411 PCM (BlackBear Tune)


    I'm getting ready to put some electric dual fans and get it datalogged by blackbear

    Thanks for any help

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