 What would the correct ignition timing be on a 1955 Bel Air Chevrolet with a 327 cubic inch engine and a four-barrel carburetor? It is a trick question. Watch this. A Chevy didn't make a 327 in 55. The 327 didn't come out until 62. And it wasn't offered in the Bel Air with a four-barrel carb until 64. However, in 1964, the correct ignition timing would be four degrees before top dead center. Whoa!