In the past when I had more time to wander the net I used to come across some flow numbers for various sbc heads. Some charts varied in flow considerably for a particular casting. Does anyone have or know of, or even built thier own, Chart with info on several SBC head castings. Castings I'm interested in particular: 882's, 441X's, 441, 186, 993, 487X, 291, and small chamber 305 heads to exclude the Vortec.
Thanks for any help.