Lose Oil Pressure When Engine Decelerates

[Paul Cotton]

I have a 440 motor that is loosing oil pressure when I let off the gas. Everything appears to be fine under hard acceleration, however, when I get off the gas and am slowing down, my oil pressure drops to zero and the light come on. In a couple of seconds, it recovers and the oil pressure comes back up to normal. This problem just started this fall.

I was told the engine was built with a high volume oil pump installed as it was originally going to be used on the drag strip.

The dipstick shows the oil level is full.

Any suggestions?

 

[RemCharger]

Put another quart in it.

 

[440Coronet500]

Do you have the stock oil pan without any baffles? If so, your HV pump could be sucking up more oil than is available in the pan. 440'