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Holley 502-6 - Holley GM 2-bbl Throttle Bodies

Holley 502-6 - Holley GM 2-bbl Throttle Bodies
Holley 502-6 - Holley GM 2-bbl Throttle Bodies

JEGS Part Number: 510-502-6

Replacement 670 cfm TBI
  • 1987-89 GM 5.7L V8 truck

    Holley 502-6 Details

    670 cfm

  • Direct Replacement For OE Units
  • 2 in. Throttle Bore
  • 42 percent Area Increase Over Stock TBI
  • Including Air Distribution Ring
  • Increased Torque and Horsepower
  • 50 State Legal

  • Holley GM 2-bbl Throttle Bodies

    Bolt-On Power & Unmatched Flow
    The Holley GM 2-bbl Throttle bodies have been designed with all the relevant emmisions provisions, electrical hook-ups and are replacements of the original equipment throttle bodies for the applications shown.

  • Direct replacements for OE units*
  • Increase HP & torque up to 25%
  • 2" throttle bores provide 42% more area than stock
  • Compatible with OE plug-ins for a quick installation

    *These Holley throttle bodies are considered equivalent to original equipment so they're 50-state legal and do not require a CARB Executive Order number.

    *670 CFM units may require intake porting or throttle body spacer 555-15404 and fuel line extensions 555-15411.

  • Holley 502-6

    Hardware Included
    Gaskets Included
    Airflow Rate (cfm)
    670 cfm
    IAC Motor Included
    Injectors Included
    Sold individually
    Throttle Body Style
    Throttle body injection, TBI
    TPS Sensor Included
    Throttle Body Finish
    Throttle Body Material
    Cast aluminum
    Venturi Quantity
    Manufacturer's Part Number:
    Rated 5 out of 5 by from Woke up our Suburban Could not be happier. Our Birb was sluggish and needed a wake up. I had read conflicting reviews about leaks etc. all I can say was mine was perfect, it was quick to install and gave no issues. I can see where if you were not carefull you could cross thread the fuel lines but that would be solely operator error. The difference in performance was night and day. If I was building another TBI this is the first mod I would make.
    Date published: 2015-08-25
    • 2016-05-27T10:40CST
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