I have KB107s at plus .005 above deck. Uncut Eddies on .039 FelPros. I no longer remember the PV clearances (that was 2004) . To be safe I set my lifter preload to .020. She can't pump up to what she ain't got
She has reved to 8000 without a hitch (missed shift), and regularly goes 7000/7200.
If your engine is out and the heads are still on it, then it is easy to determine a ball-park Scr. Jut roll the engine over to get any convenient cylinder with the plug-hole as the highpoint. Then set the piston of that cylinder, to TDC compression.
Then measure out exactly 100cc of single grade oil, like 30 weight into a graduated beaker. Using no funnel, pour about 60cc in that cylinder, then slow down but continue until the oil comes close to the bottom of the plug hole. Then, very gently rotate the crank in either direction, until the fluid comes highest. Then continue filling to the bottom of the plughole, but not up the threads.
Now set your beaker down and let it sit for 10 minutes or so, until the oil has run down the sides and back into the liquid. Then take a reading and determine how much is missing.
If you think that you cannot pour the oil in there without a funnel, well then use a small funnel, and when you are done, drain the funnel back into the beaker.
If you spill some, you will have to start over using a different hole. It is better to use a funnel than spill,lol.
This missing amount will correlate pretty closely to the actual combustion chamber volume. Write it down. Using that number and a bit of math, then Bingo! ,you have the Scr of that cylinder.
Once you know that Scr number,you can figure out pretty closely how that engine is gonna run from stall to about 3200 rpm with almost any street cam. And once you know that, then you can decide on the rest of the combo.