318 rebuild suggestions

If the engine is on the stand, you can get a pretty good idea of the Static C/R by pouring and measuring oil into a cylinder. The piston has to be at TDC compression-stroke and the engine has to be rolled onto its side to put the plug-hole to be at the high point of the chamber.
I use a 100cc medical syringe. I inject oil in until its flush with the bottom of the hole.Then I move the piston back and forth a little to prove its was at TDC. Then simple math tells me how much oil went in.
With that number and the swept volume, its easy to calculate the Static C/R.
The catch is if its been overbored. That can throw a monkey wrench into the calculation.
But on a teener its a minor error amounting to about .12point;going from 3.91 to 3.95bore.
Also if the valves are leaking there will be another error. So I do a leakdown first and pick the best cylinder.

Heres an example;
The swept volume on a stock-bore teener is about 39.74cid x 2.54 cubed = about 651cc.If you are able to pour 95cc into that chamber, this is what it looks like;

(651 + 95) / 95 = 7.85 Sc/r........................This is typical with pistons .150 down; But if you can only fit 70cc in there, then;

(651 + 70) / 70 = 10.3 Sc/r........................This is possible with Zero decks and closed chambers

I highly recommend that you not put a performance cam in an engine with a c/r in the basement at 7.85 . A cam with a 60* intake closing angle( the Xe268), will net you a Dcr of 6.4. This engine even with a good leakdown, will be really soft off the line. Reeeeeeeeally soft.
With a 40* angle, the Dcr comes up to 7.2. This is about stock. So you can see that the hi-perf. cam is nearly a full point lower, and therefore at lower rpms (I'd guess below 3600)may actually have quite a bit less performance than the 2bbl cam.
And where is most of your driving done? You guessed it...........
On the otherhand, the 10.3 engine and the 60* ICA will be around a Dcr of 8.44. With iron heads,this will probably need premium gas under full load, but will be very peppy, right off idle. You can keep your 3.23s(maybe 2.94s even), and stock TC.
With 2.76s you might wish to loosen the TC some. Time will tell.