Leave the bolts alone. GM put them in to stay.
Compression: Compression gauge. Everyone has one a monkey can use it.
Compression ratio: Use a whistler, if you don’t have one buy one. It works
If the heads are cut or angle cut, if the block has been decked, or if the configuration of the piston has been changed, this tool will tell you.
Cubic Inch: Use a P&G tube. If you don’t have one buy one. Learn how to use it.
Valve Springs: Valve spring pressure tester. Simple tool, anybody can use it.
Rocker Arms: Rocker arm gauge. So simple a caveman can do it.
Vacuum Gauge: Simple little tool, if my dog had thumbs he could do it.
Camshaft: Dial indicator - Cam doctor (if you can afford it) A must have in the tech area. Learn how to use it.
Bore Scope: This is a camera, the same kind a doctor uses to do unmentionable things, that can go into areas large and small to check from the engine bottom, crank shaft, rods, and will look at the bottom of the piston. Through the spark plug hole, you can check tops of pistons, the combustion chamber and valves.
So far, we’ve checked just about everything that counts in a crate motor. We have removed the valve covers, two rocker arms, spark plugs, and the oil plug. If it passed all these tests, it probably didn’t have an advantage.
If it fails any of the tests, then tear it down to the ground
Now then with that said, if a tech man doesn’t have the knowledge, capacity or tools for these procedures, then there is no need to remove the first bolt from a motor. It’s all for show after that and at the racers expense.
I have asked the same questions that everyone else asks and these are the answers I got. They seem to make alot of sense to me. Hope this helps.