This is an official Holley Performance Factory Refurbished Carburetor. Factory Refurbished carbs are NOT old worn-out carbs that have been rebuilt. They are carbs that were returned under warranty. When these carbs are returned, we check them out and most of the time there is nothing wrong with them. Generally, they were simply adjusted out of working range by the installer. Since these carbs may show signs of a previous installation, our policy is not to sell them as new. Rather than scrapping them, we are making them directly available to the public. Not only does this help us control the costs of our new carbs, it allows you to get a great deal on a like-new carburetor! Factory Refurbished carbs have undergone a thorough inspection. Any damaged parts that would effect performance have been replaced and the carbs are solvent cleaned before being wet-flow-tested on Holley's state-of-the-art flow benches allowing them to be recalibrated to new carb specs. Factory Refurbished carbs may have scratches, blemishes, and other visual flaws from previous installation. Factory Refurbished Carburetors have limited availability.
One of the most widely used Holley carbs of all times -the 0-80508S! Its dual feed fuel inlets assure you get all the fuel you need and its 750 CFM of airflow makes it the perfect performance upgrade carb. Its vacuum secondaries and electric choke make it super easy to use on a wide range 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.
Factory replacement emission legal carburetor. Please verify your make and model application on the chart available in the Tech Resources tab.
Vibratory polished for good looks
Performance upgrade for stock to mildly modified vehicles
Universal calibration for easy bolt-on performance
Factory preset electric choke for easy startups
Vacuum secondaries for use on wide variety of vehicles. Compensate for all vehicle weights, gearing & transmissions to allow smooth opening of secondaries.
Dual feed fuel inlets for constant high volume fuel delivery
Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required.
Power valve blow-out protection
100% wet-flow tested by Holley technicians to assure it arrives ready to run!
*Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.
Some parts are not legal for use in California or other states with similar regulations.
Use our simple CFM calculator to learn what CFM you need:
Your ideal CFM range is XXX.
You should stay as close as you can to this CFM and should go no more than 50 CFM in either direction.
In order to get a proper estimate, we need a little more information from you.
Please contact Tech Service at
If you have any other questions, contact Tech Service at
How to pick a choke:
Manual chokes allow the user to control the warm up of their engine by physically pulling a cable inside the vehicle to control the choke plate. This type of choke is generally less expensive than an electric choke.
Electric chokes fully handle the warm up of your engine without your assistance. They operate off a single 12 volt switched power wire from your vehicle.