What is the normal oil pressure for a 2000 Chevy 350 engine?

The normal oil pressure for a 2000 Chevy 350 engine (assuming a small-block V8) at idle should be between 10 and 20 PSI. However, this can vary slightly depending on engine temperature (it'll be higher when cold) and the specific viscosity of the oil being used.

Once the engine is at operating temperature and at higher RPMs (around 2000-2500), the pressure should rise to 30-50 PSI. Again, slight variations are normal.

Crucially, these are just guidelines. Consult your owner's manual for the precise specifications recommended by Chevrolet for your particular engine and model. If the pressure consistently falls outside these ranges, especially if it's low at operating temperature and RPM, it warrants immediate investigation by a qualified mechanic to avoid potential engine damage.