Lucas-56Olds98

Has anyone been able to find a supplier recently that is not backordered for a cam bearing set for a 1956 Oldsmobile 98 324?

BillK

Ill try to remember to look in the morning. I might have a set.

BillK

I do not have a set and my warehouse does not either. Egge shows them but not sure if they actually have them.

https://egge.com/

BillK

There is a set on E-bay. He only shows 1954 and 55 but according to every catalog I have 1956 should be the same. Maybe ask him for a part number ?
https://www.ebay.com/itm/14299404827...3ABFBMkuiV_c9j

Lucas-56Olds98

Thanks for checking. Egge is on backorder and they are supposed give me a call if they can get an estimated date. Oldpartssoure on ebay is who I got the rebuild kit from and they have it on backorder as well. As far as I can tell everyone is using the same part/vendor. Which I believe to be Dura-Bond O-5. If anyone has some cross reference part numbers for other suppliers that are the same that would be great!

BillK

Lucas,
Crazy request but do you have a way of measuring the cam bearing bores in the block and see if all five of them are the same size ? For some reason even the GM parts book I have access to shows one part number for all of the V-8 cam bearings from 1949-55 but not 56 ?

Lucas-56Olds98

<!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}-->Also I should note. I believe the 1956 has all the same size bearings but, 1955 has one or two that are sized differently. Below are cross reference part numbers I was able to find.


Manufacturer Individual # Set #
Dura-Bond O-5-1 O-5
King CB324 CBS324
Federal-Mogul 1558-DR 1164M
Clevite SH-324 5C324S

Lucas-56Olds98

In the Dura-Bond catalog it is listed odd to me since its not I.D. and O.D. but here is what I found.

BillK

Lucas,
The reason I asked was because the O-5 has the same OD on all 5 bearings but the O-6 has different ODs depending on the position. I dont know if GM did something different in 56 or not. Thats why I wanted you to actually measure your block and see if they are all the same. If so then the O-5 should be correct.

Lucas-56Olds98

Do you know the Dura-Bond part number for the 1955 and earlier? They are all the same O.D. on the 56. Also Thank you for your help.

I found a CBS214 set but, says its for 1955 in the ebay listing but, there is not a cross reference in the Dura-Bond catalog that I can find like I can for CBS324 for 1956 and later.

Lucas-56Olds98

Lucas-56Olds98

Or do you have the specifications for the bearings for the ones for 1955?

BillK

The Durabond part number is O-5 for all of the earlier ones. As long as yours are all the same OD then it should be the correct part number. The CBS numbers are Kanter's numbers and you will probably not find them in a cross reference.

Its really strange because the CBS-324 is showing on Kanters site for 1956 324 and 57-60 371 and 59-64 394. Durabond shows the O-5 for all of those engines also. I am not sure why Kanter is showing the CBS214 for the 54-55's ? Durabond also shows the O-5 for those engines. I think that if all of your bearing ores are the same size then the O-5 is the correct number. I dont know if Kanters tech guys have enough information to tell you if the CBS324 is correct or not. They are more of a warehouse, not a manufacturer. You could try calling them:
https://www.kanter.com/i-30532038-en....html?q=cbs324

Lucas-56Olds98

If you look at the cross reference chart I created from the Dura-Bond catalog information. I think the CBS324 Kanter part number came from the Manufacturer King Bearings and they just continued to use it. I did call Kanter yesterday and they are on backorder as well. The sales guy I talked to said Dura-Bond has not been very reliable recently.

BillK

Yes, Durabond has not been doing well as far as supply goes Not sure what the problem is. I personally think their bearings are the best around.

Lucas-56Olds98

I agree it is strange. If O-5 fits 54-55 plus all the later years. Then CBS214 and CBS324 should be almost identical.

BillK

Lucas,
I sent a message to Joe P and he looked in a parts book he had. It shows a different part number for 56 and newer
Gm 557906 for 55 and older
GM 568543 for 56 and newer.
Those numbers are for a single bearing used in all five positions.
Durabond might have possibly consolidated the numbers and made one bearing that works on all of them ? It does happen.

I have a couple of people trying to find the O-5

OLDSter Ralph

Don't shoot me............ Something pops into my mind that Oldsmobile changed camshaft journal sizes. At the time, I thought...."isn't that interesting". I wonder if they did a cam journal change in 1956 and carried on to 371 and 394. I may have seen it on "Jalopy Journal". Tedd, Redoldsman, Joe P. or some of the others might know.
I don't have a 1956 CSM, but my 1957 and 1958 CSM shows:

Camshaft bearing Journals - All 1.9977" to 1.9985"

Width (including champfers)
No 1, 5 .781"
No 2.3.4 .699"

Journal clearance in bushing .0010" to .0033"

Diameter - Reamed Bushing All 1.995" to 2.001"

Length - Bushing All .688"

This comes from Section 8-36 Engine section, 1957 CSM.

redoldsman

I wish I knew and could help out. About as deep as I got into the engine on my 54 was rocker arms and shafts.

Lucas-56Olds98

I am going to go with the hope that they consolidated part numbers. I ordered a set that uses part number CBS214 and we will see what I get and if they fit. I will update you all when I find out.

Charlie Jones

Somewhere in my ancient memory, I remember a camshaft journal size increase in 1956 also.

madmax442.com

Yes, 1956 camshaft was different. Journal size increased.

BillK

So Lucas, what do your camshaft journals measure ?

Lucas-56Olds98

I did not get them measured. We were able to get some O-5 as Durabond did a run about a week ago.