Cam Bearing install on 440

[Barracuda73]

I'm having trouble lining up the cam bearing that has three oil holes in it. It appears the oil holes that go up to the heads are offset. I have the oil hole for the main bearing lined up and one hole that goes up to the head. The other hole that goes up to the head does not line up. Does this mean my block was drilled crooked from the factory? Do I have to file the oil hole in the cam bearing bigger to fix this? I'm using cam bearings PDP 17.

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[jimynick]

Is it possible that you have it in backwards? I'd use the old bearing to check and I also don't think driving in and out of the new bearing does it nor you any good. The bearing is a crush fit and having been installed and removed, it may not hold where it's supposed to. We actually had that happen to us one time in a Volvo where we did just what you're doing and it spun, blocked the oil feed hole and starved the top end until we noticed there was no oil coming up. Just my 

[cudabob496]

https://www.youtube.com/watch?v=12uaC-alix0

https://www.youtube.com/results?search_query=cam+bearing+install+440

[Barracuda73]

I took the bearing out and actually installed it both ways. The one oil hole will not line up either way. I looked at the old bearing and the new bearing. All of the holes are in the center of the bearing. So 1 hole in the block is off to the side a little. That is why it will not line up. I don't know any history on the Block. I wonder how the old Cam Bearing got oil through it before. It could have probably only had half flow through it. I will have to order a new set of bearings and I will just have to file the hole out to match the block after I install the bearing. Using a cam bearing as a straight edge in the picture you can see  the holes in the block are not lined up.

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[734406pk]

 It appears that the drilled oil gallery to the head is off slightly with the block. It's probably in tolerance with the factory spec, but I agree, it looks wrong. So to correct this issue, you would need to pre-file the oil hole in the cam bearing to match the block. Remember to slightly chamfer the modified oil hole (both sides) on the cam bearing prior to install. Also DO NOT reuse cam bearings, once they have been pressed in, they are not re-usable.  Good luck with your build! 

[Aussie Challenger]

A better solution might be to drill an angled hole that will match up with the bearing, slotting the bearing will weaken the bearing.
As the new hole will be on an angle you should be able to get a drill in but be careful, start with a small drill bit and work up or just try using a file.
Some on here may remember the fraud Y Blocks turning their bearings cutting off the supply to the overhead valves, you certainly don't want anything like that to happen.   

[1 Wild R/T]

When you realize that most serious builders restrict the oil through those passages a misaligned passage that still has 25% open isn't a problem.... Put the bearings in & look for whats gonna be your real issue, the cam is going to bind in it's bores.... The bearing will need to be scrapped...

BTW what are you using to drive the bearings?

[Barracuda73]

I'm using a universal Cam Bearing tool ,the one in the picture. I was worried that the hole is off to the side so much and mostly blocked. If I open up the hole, in the cam bearing then it will not line up with the oil hole in the camshaft.  I would have to open up the hole a little to one side in the block to match the cam bearing I figure? I guess with it blocked off it would provide more oil to the main bearing but then I wouldn't get much up to the head on that side.  I did put the cam in with only two bearings, just to see how it fit. It went in easily but that was only two cam bearings in the block. I didn't put any more cam bearings in until I get this figured out.

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[73440]

Trying to resize the photos.

[1 Wild R/T]

First picture, nice driver, should work well...
Second picture, not sure what your showing, looks like the bearing is only part way in & has blocked one oil passage...
Third picture looks like the bearing is fully driven in, one hole doesn't line up well but when you realize it's common to use a .060 restrictor on that line I wouldn't worry about it....
When you get five bearings driven in let us know how the cam turns.... Two is easy, three can start to bind, four your gonna be scraping, five scrape some more....
The trick is to take the old cam, use a cut off wheel on a die grinder to cut across each bearing journal  & then use the cam as a cutting tool for the cam bearings...

[734406pk]

  Those oil passages are feeding the rocker shafts, which are restricted anyway. If you don't want to file the bearing or drill the block, you'll be ok. The major concern is to get the cam to turn freely so you don't spin a bearing as 1wildRT has posted. I have a partial (fresh) set of cam bearings you are welcome to if you need to replace some. Missing the #1 (sprocket) bearing if I recall. PM me if you need them.