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

Posted by PackardV8 On 2009/10/28 19:54:22

Jed writes : "Aller sent me a different pump."

There were 2wo different pumps. Do u remeber if the pump u sent him had a large hex nut plugging the pressure relief valve port???? This is generaly called "the plugged pump" and was used on late 56 engines. 55 and early to mid 56 pumps had just an open hole at the pressure relief valve port.