273 Intake 4 bbl Conversion

The picture of his car is a 64 Dart, so that implies the early intake & heads. Before I was cognizant of this issue, I inadvertently installed a pair of early heads on my 67 Commando 273. Because the angle the intake bolt holes are drilled into the heads is different, the intake did not seal — it sucked oil out of the valley into the cylinders, resulting in clouds of smoke and completely gunky valves. I strongly recommend not using a 318/340 intake on the early heads.