273 with 360 heads/valves

69 Cuda 440 said
* Crankshaft
* Rocker Arms
* Dual-Point Distributor
* Intake
* Carter AFB

The Lightweight "thin' Full-Floating Connecting Rods were actually not bad for screaming.

Let's not forget the closed chamber heads. The chambers were shaped like the #302 casting heads released years after.