CNC-Dude, I am not partial to either head. I have one of each, with the 194 just setting. I'm not arguing with the general consensus of the 250 head flowing better. But I do wonder a little if Twisted6Larry or Mean-Buzzen Half-Dozen Hank didn't do something slightly different with their 194 heads, that these other guys didn't try. I do have a copy of the dyno run results by Tom Lowe, which are very informative.
On the photos of modified 194 heads that I have seen, none have the extent of de-shrouding that follows the current trends of cardioid, kidney, or figure 8 combustion chambers. Is this due to lack of wall material in the combustion chamber before hitting the cooling jacket, on the spark plug side of the intake valves?
