W2 valve size recommendations

Here are some measurements with the two pedestals Between the intake ports.

The first measurement and pictures two and three are pictures of the pedestal with the oil hole leading from the deck. Picture three shows how I took the measurements. The second measurement In picture four is from the pedestal between the other pair of intake ports.

This should give you a good idea if you have the tall valve , like my pictures, or short valve econo heads.