This Holley Performance Carburetor is a vintage nostalgic old school Street Rat Rod part number 80770-1, with a list number of 80770-1. It is a 4 barrel carburetor with a vacuum secondary and dual feed, suitable for use on various vehicles. The brand is Holley Street Avenger and it is compatible with other part numbers and interchange part numbers. This item is perfect for those who are looking for a carburetor that provides excellent performance and reliability.