Thread: A new car!
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Unread 04-06-2016, 10:34 PM   #127
GlenL
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I'll be upgrading the oil pump with this '89 unit. The important difference is the way the shaft is lubricated. On the '80 pump the oil is sucked past the shaft and into the engine. That can suck air in theough the seal. Not good. On the later pump the oil is pumped to the shaft and it drains back into the pan.

In the picture, you can seen the drain tube on the pump as a boss on the outside and an oval hole on the back. The drain hole is towards the bottom of the pic that shows the gear.

This is going to work great but only after drilling a hole though the block to let the oil drain into the sump. The pump looks really nice, too.
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Last edited by GlenL; 04-07-2016 at 10:19 AM.
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