Engine Break-in

When starting a fresh motor "Engine run in" should be 30 minutes at 2000-2500 rpm's,like others have suggested.At this rpm,it assures a constant flow of oil to the cam and lifters.If the engine is idled at low rpm,insufficient lubrication to the cam and lifters could possibly gall one or more of the lobes-back to square one.

I would like to add a couple other tips.

1.To be sure the engine develops full oil pressure,remove the spark plugs,so the engine will crank faster,and crank the engine.An idiot light should go out within 15 seconds.A gauge should indicate 35-40 psi within the same time.

2.The additional friction of a new,"tight" engine produces more heat than after it has a few hundred miles on it.To keep a constant flow of cool water through the cooling system,stick a hose into the radiator and open the radiator petcock.Fill the radiator and engine,then adjust the flow into the radiator to compensate for the flow out.Readjust the flow when the engine starts.This will keep up a constant flow of cool water to the engine and prevent overheating.

3.Have a timing light hooked up and ready to go.Timing is set soon after engine is fired.