My home inspection of Speedmaster heads

Well the good news is out of the box as tested with a 2.02 used Edelbrock valve with a 30 degree backcut is they flow [email protected] lift were an Edelbrock Head maxes out at 243 on my bench. At .500 they take a slight dip to [email protected],[email protected], and 256 bouncing to [email protected] so when I calm that down with a valve job and wider pinch let’s see what will happen. I know we have to many Speedmaster posts now but I may start a new one with what the mods do and how air speed reacts. Pushrod pinch was 384, 382, 377, top to bottom. Pretty damn fast.