I've rebuilt my .040 4 bolt 350 and used chrome rings. now after 1000 miles the engine still burns oil, all other fluids are OK.
Driving the car at 65 MPH @ 2250 RPM the engine will smoke lightly then suddenly smoke quite noticeably for a short period.

The engine has new heads, new pistons and rings, new PCV valve, I used Fel-Pro gaskets and Sealed Power pistons and rings. Bearings are new as well.

I've been told to use about half a soda straw of Bon-Ami cleanser to each cylinder or let the engine get hot.

Now how hot is hot? Got electric fans so allowing to produce heat is no problem.

Did my machine shop make a mistake in measuring my bores?

Please help,
Jerry P.