Thread: hi volume/ pressure oil pump problem

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Hello again evryone. I have new heads on my 327 ; the bottom end has about 5000 miles on it. I am about ready to install the manifold. Before doing this, I attempted to pre-oil my engine as instructed by the book. I used a home made straight slotted bit to turn the oil pump shaft. The engine has about 4 -1/2 qts. of oil in it right now.
The pump shaft is sort of hard to turn making the drill have to grunt to get it to turn at all. Is this normal? I thought the pump should spin freely. Or is this somthing that a hi volume/ pressure pump does? Just as a side note, this motor idles with around 45 pounds of pressure, and 80 lbs. at 2500 rpms and up. Since I have the motor on the stand, I wonder if i ought to pull the pan and replace the pump with a "normal" pump. Also, the shaft has a little bit of play, but I assume this is normal.
Basically, I am scarred to death as the oil pump is the life blood of the motor! HELP!

I know it will load up a 1/2" elect. drill. and that 80psi will come down when the motor gets hot.

Hi Marty.

What you say makes sense, but when I ran this engine before, it ran 80 psi long after it was warmed up.

Hi Bill.

The gauge is a VDO unit, using an elecrical sending unit that sits just behind the manifold.

Originally posted by dutchhotrod
Hi Bill.

The gauge is a VDO unit, using an elecrical sending unit that sits just behind the manifold.

the pump will have as much drag as it takes to push the oil through the motor. if youve got oil in it and it turns fee then you really have a problem. you dont need all that much pump. a stock pump sounds good.