Edelbrock 1406 Performer 600 CFM Square Bore 4-Barrel Air Valve Secondary Electric Choke Carburetor Primary venturi booster is a bottom feed design for smoother acceleration and better drivability Single feed fuel inlet with air valve secondary type Shiny silver finish and calibrated for gasoline Electric choke with 4-barrel square bore carburetor flange Backed by Edelbrock's exclusive 90 day warranty Primary Jet Diameter	- 0.098 inches Primary venturi booster is a bottom feed design for smoother acceleration and better drivability Single feed fuel inlet with air valve secondary type. Match with an Edelbrock Performer or Performer EPS manifold or other brands of similar design Shiny silver finish and calibrated for gasoline Electric choke with 4-barrel square bore carburetor flange Backed by Edelbrock's exclusive 90 day warranty