650 CFM - 4175 - Vacuum Secondaries - Polished Aluminum - Gasoline , Replaces 0-80555C

Part Number: 0-80555S

Do you like the tunability of Holley's modular carbs, but need to simply replace a Q-jet? The spread bore bolt pattern of the 0-80555S lets you do just that. It has vacuum secondaries and electric choke, so it is useable on a wide variety of vehicles. Don't trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's. ***The 0-80555S is a Model 4175 designed to fit GM spread bore passenger car and light truck applications. It is not compatible with Ford or Chrysler Spread bore applications. The 0-80555S is not recommended for any RV applications. The 0-80555S is not designed to pass any emission laws. The 0-80555S is to be used only for Uncontrolled (Non-Emmisions Controlled) Vehicles or competition/off road vehicles. A carburetor spacer could be required to clear certain components on stock applications such as the Mr. Gasket 3406.

Features and Benefits

• 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
• Vacuum secondaries for use on wide variety of vehicles. Compensate for all vehicle weights, gearing & transmissions to allow smooth opening of secondaries.
• Factory preset electric choke for easy startups
• Universal performance replacement for Q-Jet and other Spread-Bore carbs (4.25" wide spread bore bolt pattern)
• Single feed fuel inlet for easy installation
• Vibratory polished aluminum for good looks, weight savings and long lasting shine
• Universal calibration for easy bolt-on performance

This model of carburetor has the spread-bore flange bolt pattern only, 4.250" wide X 5.62 long. It replaces GM Rochester Q-jet carburetors.