Service Holley 6238-1 CARBURETOR date code 1354. This is a Camaro carburetor. The General Motors id number is 3997788. Restored to its original Holley color, all of the steel hardware has been re-plated to the original finish. Carburetor retains the factory Holley calibration. Very hard to find. Found primarily on1972 Z28 Camaro and LT1 Corvette. Before this leaves our facility it will be test run on our motor to ensure a trouble-free installation.