327 main bearing question.

1196 Views 7 Replies 3 Participants Last post by guitarman, Mar 22, 2011

guitarman

Discussion Starter · Mar 22, 2011

Helping my friend with his engine assembly after a camshaft problem. He ordered new bearings and on the upper main bearings the oil hole doesn't line up with the hole in the block. These are sealed power bearings with one hole up on the side of the bearing and a groove with a slot in it.

When looking through the groove with the slot cut in the bearing you can see the oil galley hole in the block. Is this okay? Looks like it would restrict oil flow to the mains?

His old bearings were Clevite with two holes in them. One hole lined up perfect with the hole in his block the other didn't and is in the same location the one single hole is on the sealed power bearings.

This is in a 1966 327.

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guitarman

Discussion Starter · #3 · Mar 22, 2011

They are completely off. But the bearings have a slot that is cut through them. The slot lines up with the hole. But the slot is not a round hole. The round hole is more on the side of the bearing.

The clevite bearings he used the first time had two holes in them. One lined up perfectly. The other was in the same position these are.

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guitarman

Discussion Starter · #5 · Mar 22, 2011

If I remember correctly I think the part # is 994M.

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guitarman

Discussion Starter · #6 · Mar 22, 2011

Clevite had two holes. One at the 12 oclock position (if the engine is upright as it sits in car. This is where his oil hole in his block is. The other hole was more up on one side.

The sealed power only has the one hole that doesn't line up. And, they have a slot comletely through the bearing. This is where you can see his oil hole.

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guitarman

Discussion Starter · #8 · Mar 22, 2011

He took the bearings back and ordered the clevite set.

Dave, that is the Clevite set he ordered. See how the hole is in the center of the bearing? The Sealed Power set has the hole off to the side just like the rear thrust bearing has. Then it has a really narrow slot cut in the bearing that lines up with the oil galley hole in the block. But no round hole.

They say 994M on the box.

The set in the pic you posted look correct. But the set he was sold only have the side hole like pictured in the Clevite bearing set.

When his Clevite set arrives I guess all will be OK just confused aabout the Sealed Power set and the hole in them.

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