I've never seen the TF 270's,

How do they get around a pushrod Pinch without using an Offset Rocker? It's hard to believe they can get the Intake port to flow what they do (and better with porting) without one.

My Chapman MW's used a .485" offset rocker...and that was after relieving the outside walls a bit. (~.550 would be ideal)

As I understand it, the TF270's flow roughly about the same (Mine flow 285 @.400,335 @ .500 and 360 @ .600) without an offset and only a 2.19" intake valve?