Oil pump 5 hole versus oe 6 hole pump for slant 6

[Vali68]

I am looking to put a new oil pump on the Slant 6 225 I am building in my garage. I see the old oil pump is a 6 hole oil pump. All the new ones show only 5 holes, but the gaskets still come as a 6 hole pump. How do I make sure I apply this 5 hole pump correctly to eliminate the hassle of taking the oil pump off the car with the motor in it because of a oil leak from the oil pump?

The reason I want to change out the old oil pump is because when the motor was pulled from it's original car, they left the motor leaning on the oil pump. I think it may have bent the shaft because the oil pump does not turn freely by hand. It binds.

I found this melling 5 hole oil pump and some info on the oil pump gasket on Slant 6 forum. but it doesn't mention the melling and the gaskets that come with it. Or the fel-pro gasket in the gasket set for the slant 6.

www.slantsix.org/forum/viewtopic.php?t=17669&sid=9337a876f43770e5fcd4efe16842fcdc

 

[robertob]

Take apart the old pump and see if it still binds. Might just be crap inside of it. In my experience a high percentage of used pumps are still within specs.

The 5 vs 6 hole thing is a non-issue. Pumps swap back and forth with no problem - there is a small subset of 5-hole pumps that are not cast with the extra ear that blocks where the 6th bolt goes into the block. For these few pumps, just stick a little extra gasket material on that area, it will be clear when you have the part in your hand.

 

[Vali68]

Take apart the old pump and see if it still binds. Might just be crap inside of it. In my experience a high percentage of used pumps are still within specs.

The 5 vs 6 hole thing is a non-issue. Pumps swap back and forth with no problem - there is a small subset of 5-hole pumps that are not cast with the extra ear that blocks where the 6th bolt goes into the block. For these few pumps, just stick a little extra gasket material on that area, it will be clear when you have the part in your hand.

Thanks.