The First 1967 383 A-Body, 'Barracuda or Mr. Norms's Dart'

I wonder how many guys popped on a set of #2843906 'open chamber' cylinder heads on their 1967 383,
thinking the bigger exhaust valves and larger intake ports would increase performance,

Only to realize that they would lose over a full compression point, dropping their 383 to {8.9 - 1}.