JEGS Small Block Chevy 3-Deuce Intake Manifold and Carburetor Package combine nostalgic looks with modern features. The precision- cast aluminum dual plane, medium rise intake manifold is powder coated in a high gloss finish for incredible looks and durability. The 2,500 to 6,000 RPM manifold is topped off with three purpose-built 2-bbl Holley carburetors. A single fuel feed line is all that is required. The progressive linkage connects and controls the carburetors. The center carb is 350cfm with an electric choke and is used at idle and cruising speeds. The front and rear carbs are 325cfm that are ready to jump in and throw you back in your seat when the power is needed. The package is finished off with hand polished air cleaners with serviceable elements. Designed for use with 55-85 style cylinder heads. Not designed for use with Centerbolt or Vortec style cylinder heads. Note: for use with gasoline only. .