The Edelbrock 1400 Performer Series 600 CFM electric choke carburetor is a precisely tuned quality-built carburetor that can handle the rigors of daily driving while delivering consistent reliable street performance from day to day. Several characteristics make the 1400 Performer Series 600 CFM electric choke carburetor an outstanding street performer. The first one is that metering rods are utilized to transition between circuits. The carburetor is unaffected by engine backfires which means that there are no power valves to blow out. Secondly the carburetor has the unique ability to "hold a tune" so the carburetor stay's tuned. What this means to you is that compared to other carburetors the performance remains consistent and the calibration stays unchanged. The lightweight all-aluminum body features a two-piece body that resists warping and is compatible with today's commercially available gasoline gasohol and blended fuels (E10 not E85). The simple tub-type bowls and rear-pivot floats all contribute to a carburetor that's reliable and user-friendly for miles and miles of trouble-free operation. The #1400 is an emissions legal part when used with 1980 and older GM V8's (Chevrolet Cadillac Buick GMC Pontiac and Oldsmobile) originally equipped with non-feedback carburetors. May require the use of adapter plate #2696.