Base Plate for Holley 4777 650 cfm Double Pumper Carburetor 2 Corner Idle

Holley Base Plate Replacement for 650 cfm 4777 Double Pumper 4150 Carburetors

• Replace your worn or damaged carburetor base plate
• Fits double pumper Holley 4777 carbs with 2 corner idle (idle mixture screws in primary metering block only)
• Also fits 650 , 700 , 750 , 800 cfm double pumper carbs with 2 corner idle
• Features 1-11/16" throttle plates
• Includes fast idle bracket and set screw for choke, which is not included with other base plates
• Includes the lever arm (link) that attaches primary to secondary throttle arm and idle speed screw with spring
• Casting 12r11520, throttle butterflies are stamped 172
• Baseplate fits Holley / Barry Grant / Demon / C&S / APD / BLP / Rupert / AED / Pro Systems or any Holley equivalent mechanical secondaries carburetor