I have a 427/390 HP. Holley List 3811. Someone told me to check the front metering block #. Mine is 4777. He has a similiar carb and his front metering block# is 4796. Any idea what number should be on the Holley List 3811 carb. Mine is dated December 1966 4th week, which is a correct date code for my engine.
1967 carb Quetion
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