360 questions

a 4.03 hole and .110 down makes 23cc, the open chambers might be 70cc and the gasket might be 8.9cc. This totals 101.9. To make 8.0Scr with this, the dish would have to be very small indeed to make 5cc.
Of course there are other variables with other results. etc
For instance; thinner gaskets and shaved heads, smaller chamber heads....
Now, with the early closed chamber teener heads and a thin gasket, the total chamber size could be reduced to around 23+60+6.9+5=95cc. This would bring the compression up to about 8.9Scr.This is a very worthwhile gain in compression,allbeit with a horsepower penalty after the torque peak.Depending on your needs, this could be an alternative.

FWIW; I once put the entire teener top end,including the cam and 2bbl, onto a 340 bottom end. This essentially turned my junkyard340 into a big-bore, high-compression teener.I dropped it into a 65 Valiant wagon with fenderwell headers, and hiway gears.. It was a terror for what it was.
I remember it fondly.