2-Circuit Metering Block for 4150 and 2-Circuit 4700 carburetorsFully adjustable calibration for out of box E85 performance designed to fit most real world street & race carburetors. Simply add your jets and power valve to complete the installation. Includes the following items. Additional carburetor modifications will be required to run E85.
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2-Circuit Metering Block for 4150 and 2-Circuit 4700 carburetors