[rms427]

Here is the information I found written down on a slip of paper inside an old parts book. I wrote this down when I was rebuilding the engine in about 1974. I assume the information was off the engine but it was over 30 years ago and I could have just taken it from one of the parts books. In fact, I thought I remembered the intake valves being 2.09" diameter not 2.04. So take it for what it's worth.

1966 428 PI.

Cylinder heads C7AZ-6049-A. Intake Valve 2.04 Ex 1.57. Intake port 1.34x1.93. Ex. port 1.28x1.84.

Intake Manifold C6AZ-9424-H. Ports 1.24x1.94. Carb 2 1.78 by 2.5 ovals.

Camshaft C3AZ-6250-AA Mechanical cam - Lash.025. Duration 306 deg Intake and exhaust with .5 lift.

Pistons Dished with eyebrows.

Rods 762-774 grams with 13/32" bolts

Crankshaft C9ZZ-6303-B Main 2.749 and rods 2.438 with 3.98 stroke.