Big Block Power Combo - Real Fine 509, Part 2 Photo Gallery
Dart suggested its aluminum Pro1 310cc cylinder heads and we didn't argue. It's the intake runners that measure 310cc, but Dart offers them in capacities up to 345cc. The intake port location is stock to match standard intake manifolds, but the exhaust ports are raised. 0.300-inch for greater flow and the easier installation of larger diameter headers.