Product Summary

289, 302, 3 Emission Code, 10-Rib Drive Pulley Type

    Key Specs

    MFG. Part #77-174FSB-1

    Need To Know

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    No centrifugal blower can compete with the Weiand 174 Pro Street small block Ford motor for making serious horsepower and torque. This Roots-type blower provides the flattest torque curve which translates directly into mid-range and top-end power. You''ll need more hood height than stock. However, if you want to be fast, it's a small price to pay. Plus it''ll look like you''re loaded for bear. This Supercharger is Satin finished.

    • Low-profile
    • 6.00" Lower pulley
    • 3.75" Top pulley
    • PTFE rotors
    • 10 Rib Pulley Drive
    • 100% tested
    • 25-40% Gain Over Stock


    CARB Warning

    For race/ off road use or for use on pre-1966 vehicles.

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.


    MFG. Part #77-174FSB-1
    Emission Code3
    Drive Pulley Type10-Rib
    Pulley Diameter3.75"
    Crankshaft Pulley Diameter6.00 inch
    GTIN Code090127545928