[Excaliber]

Good observation Byots.
The 427 piston height spec is in fact .030 below deck. In "blue printing" my engine I was specifically looking to introduce "quench", thus the pistons were designed for .005 below deck. Iron high riser heads, by the way.

You know, I thought I had covered every possible base in blue printing my motor, but I totally over looked the importance of Dynamic C.R. Very interesting stuff, this thread.

I can see why some motors get away with 11 to 1 static C.R. What REALLY counts is the Dynamic C.R. That explains SO much! Change the cam and get the wrong profile on your 11 to 1 monster and you could be in BIG trouble!