LIST 3310-2 refers to a specific model of a Holley 4160 series carburetor, widely known and used in classic muscle cars. 

• Manufacturer: Holley
• Model: 4160 Series (evolved from 4150)
• CFM (Cubic Feet per Minute): This carburetor was originally rated at 750 CFM (some variations have been sold as 780 CFM).
• Configuration: It is a 4-barrel, square bore carburetor with dual fuel feed and vacuum secondaries.
• Choke Type: Typically came with a manual choke, though electric choke versions and conversion kits are available.
• Application: Originally developed for the 1965 425hp 396 Chevelle, it became a popular performance part for many factory muscle cars including Corvettes and Z/28 Camaros.
• Identification: The "List Number" (or R number, e.g., R3310-2) is stamped on the front of the choke tower of the carburetor, which helps identify its exact specifications.