Hi 79coyotefrg,
I think those specs are off?
Isn't the 22 head considered a hemispherical?
Interestingly, the Engine Analyzer shows better numbers for the wedge head over the hemi head selection for the 20R.
Gnarls.
not really but close. the chamber is more of a wedge shape. the biggest difference between the 20R and 22R heads is the way the air flows into them. you cant look in the intake port of a 22R and see inside the cylinder when the valve opens. the 20R you can. and the 20R is a true hemi shape
