Actually, that is the main focus of another thread that is currently underway in the Engine section entitled "261 Chevy 848 porting"! I will have before and after flowbench results showing how this technology applied to these earlier heads not only improves the flow capabilities tremendously, but when done in conjunction with modern porting techniques will take the 235/261 and GMC's to a much higher plateau than they have ever gone before.


Class III CNC Machinist/Programmer