Re: Packard TSB 56T-20 - Low Oil Pressure

Posted by PackardV8 On 2009/10/28 21:43:06

Quote:
"Another question, has there been any evidence in the failed engines of the oil return passsage at the rear of the left head being plugged or partially obstructed with debris. I would think that would create pump problems and early failure(I believe it is driven off the left side of the engine)as well as noises in the valve train and lower end as well. Or maybe the return is not of sufficient size?"

I doubt it. There is plenty of other places for the oil to drain back. I've seen SBC heads so caked up with crud that i had to use a screw driver to nearly pry the crud out of the drain back holes. It never caused any problem other than valve cover leak and some exhaust smoking.