Does anyone know if you can mill LS heads at an angle to "close" the combustion chamber. i remember in my days as a ford fan people would mill their heads at 1-2 degrees to close up the chamber and not sacrafice as much ptv clearance.

I'm working on some 706 heads right now and im curious if this is an option with this engine?
Thanks!

 

Not sure if you can do it vand still get the intake to seal right, but I've seen people weld the combustion chamber up and then CnC it to get the size and shape they want.
One guy I know is actually running heads with this done to to get 14:1 compression on dished pistons. This way you get most of the pressure forcing down on the center of the piston instead of the pressure being exerted towards the rings on a domed piston