273 question

If you end up building your engine, get some later heads for more intake manifold options. If you want to keep your intake, good luck in finding good 315 casting heads. That casting seemed to have problems with cracks on the outside of the head for some reason....thin casting there? The '66-7 920 casting heads seem to be better in that respect and still have the same combustion chamber size and shape. The '68-72 675 castings are very good (crackwise) but, have bigger combustion chambers, so, you need to take that into consideration when choosing pistons and compression ratio. Personally, I'd check around for more price quotes. That seem a bit high to me for just machine shop labor, but, hey....prices are going through the roof everywhere else, so, why not with the machinist? Check with members of the local car club or at a cruise night and get some recommendations from the locals. You might even find someone with a good used engine, or one needing less work than yours. Good Luck!