And as far as heads, a 194 head will give you almost a full point in compression, which is always helpful.
-Sam.
Prior to all the 292 dyno testing we performed this month, it was always assumed the 194 head swap was a viable way to increase compression, and thus HP as well. We have since found this to be an untruth, and actually, HP and torque is lost and not gained by using the 194 head. Even with proper unshrouding of the valves, we consistently saw this to be a repeated occurance. The smaller chambers of the 194 head do more to restrict breathing than is gained, and therefore both tlowe and myself are not going to endorse this modification as a way to be beneficial to the enthusiasts seeking to do this.
