Yeah, it seems that if the head bolts were smaller the heads might not interchange, but easy fix either way. Really no reason to change the head. With a ton of boost it will flow. To get it out to a 230 bore would be over a 1/4" in diameter (5/16"). So better than 1/8" wall thickness to remove. I'd just like to know if the walls are the same as the 230-250. I have a 250 that is .080" over and has been run that way. Maybe that is why it was given to me. And I hadn't thought if the short deck making if stiffer than a 292. Tlowe had some NOS 194 blocks maybe short blocks? That would be a good thing to start with. A stock bore would be best. Custom pistons a must & probably rods?. Maybe a 230-292 head for flow & a bit less compression? Are the rod bearings 2"?
