Center Bolt Vortec Black Valve Cover SBC Small Block Chevy 305 5.0L 350 5.7L Fabricated Aluminum & 14 Air Cleaner. Height – 3 3/8, will clear most valvetrain combinations. Fully TIG welded aluminum cover. Thick 1/4 billet rail. 14″ x 3″ Round Super Flow Air Cleaner Kit Washable Element Recessed Base. Fits Single 4-barrel carburetor with 5 1/8 neck. Featuring a zinc plated 1-1/4 inch drop base for increased hood clearance, this assembly requires 2.5 inches of clearance above the carb flange when installed. Includes 3 Pre-Oiled Washable Element. One pair of polished aluminum valve covers. Professional Installation is Highly Recommended.