edelbrock magnum head flow?

You can fit a 2.100 valve in there, but it’s damn close. You have to have the guides spot on or the valves will rub. You can use a 1.550 exhaust valve IF you use a 50 or 52 degree seat to get some more room.

Even if you remove the pushrod pinch it’s hard for that port shape and size to properly feed a 2.100 or even a 2.080 valve.

Removing the pinch is always good but it almost never shows any real improvement on the flow bench.

That’s why shape is as important as what the flow bench says and I can make the argument that shape is more important than what the flow bench says.