The flywheel and such will bolt right to the bigger engine. As far as the 194 head goes, yes it has smaller chambers and will raise the compression, but the ports are so poorly designed that you won't see much if any gain with out a lot or porting and flow bench time.
Jump over to the Inliners.org web site and read up on the 292 dyno topic or the 250 dyno topic. Tom Lowes has done a lot of testing on these two engines and swapped a lot of parts. They have proved what works and what didn't. The 194 head was one of the ( didn't work like we thought) items.
Joe
Last edited by Joe H; 03/16/2010 3:25 PM.