360 questions

As above and;
Before you install it, set it up to put one cylinder at TDC compression, and with the sparkplug hole as the high point, measure the chamber volume, to calculate exact compression ratio. I do this by filling a a 100cc syringe(vet shop) with 30 wt oil, and pouring some/most of that oil into the cylinder to the bottom of the hole. Be careful and slow down after 70cc. When you are finished, rock the crank back and forth a couple of degrees to prove the piston is at the top. Add oil as may be required, to the bottom of the hole.Work slowly and carefully,cuz if you spill, you will have to start over with a different hole.Finally read the syringe and calculate the true fill volume.If you used all the 100, your cr is less than 8.5. If you need to add more, add exactly 20cc to the syringe.Then continue filling, to the bottom of the hole.

The formula is (swept volume + fill volume)/fill volume = Scr
The swept volume for a 30 over 360 is (4.03/2)squared x pi(3.1416) x stroke(3.58) x 16.387(a constant). This equals 748.3 for you.
So a 100cc fill volume would be (748.3 + 100.0)/100.0 = 8.48Scr,
And a 106.9 cc volume would be(748.3 + 106.9)/106.9 = 8.0Scr

This true compression ratio number will be very useful later if you decide to make a cam change.Or a head change.