BORE SHROUDING TEST: 4.03" vs 3.91" Edelbrock RPM Heads Really Fit a 318? Project Mission Impossible

273 said
Be nice if he did a 30 & 60 overbore flow test also.

That would be interesting too. Like to see the difference between 360 and 340 bores

Would also like to see the difference when the edge of combustion chamber is matched to the bores.