SBM Edelbrock/Speedmaster Head Data

I am going to compare the SM head to my Weslake 'J' head cutaways.

Much taller port floor and a slight ''wall hump'' as per all late Mopar iron heads.
The area open to the valve, next to the port wall is tiny in comparison.

340 J ported.jpg

340 J- head port floor to wall mods.jpg

SM port.jpg