Who is OEM bearing supplier?
02-06-2013, 03:37 PM
#1
Who is OEM bearing supplier? Does anyone know who the OEM bearing supplier for gm LS engines is.
I can't make up my mind who to go with or if coated bearings are even necessary for my daily driving occasional run the heck out of it times.
GM' OEM main and rod bearings are 272 out the door my cost
clevite 77's are another option
or clevite coated main and rod bearings
and durabond coated cam bearings
Any insight would be appreciated. I'm building a LY6 6.0 for my TA
I can't make up my mind who to go with or if coated bearings are even necessary for my daily driving occasional run the heck out of it times.
GM' OEM main and rod bearings are 272 out the door my cost
clevite 77's are another option
or clevite coated main and rod bearings
and durabond coated cam bearings
Any insight would be appreciated. I'm building a LY6 6.0 for my TA
02-10-2013, 11:59 AM
#2
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I'm not sure about the bearings but I believe the engine seals are federal Mogule ,,,,,,,if this is true then bearings are probably sealed power which is Federal Mogule but absolutely do not under any circumstances quote Me on this. The reson I say the seals maybe Federal Mogule is because i bought Federal Mogule seals for My LM7 5.4L (.030" over) and then was looking at Them side by side and They look exactly the same and the GM ones have FM written on Them ? so ,,,,,,
12-10-2020, 08:54 PM
#4
I was looking for an answer to this exact question.
Here's the answer:
Federal Mogul may be the supplier. They make the pistons and piston rings as well. However, the bearings that come in the Sealed Power box and a GM box are different. King SI and HP bearings are similar to the quality, finish, and texture of OEM (GM) branded new bearings, the sealed power do not. The aftermarket branded bearings will give looser bearing clearance than GM branded. Mahle also makes many GM parts, they may be the actual manufacturer which includes Clevite bearings.
Sealed Power 2555A - Rod Bearing
Sealed Power 7298MA - Main Bearing Set
That GM A590 stamp is actually a reference to the bearing material
The page from the FM FP Diesel catalog
Here's the answer:
Federal Mogul may be the supplier. They make the pistons and piston rings as well. However, the bearings that come in the Sealed Power box and a GM box are different. King SI and HP bearings are similar to the quality, finish, and texture of OEM (GM) branded new bearings, the sealed power do not. The aftermarket branded bearings will give looser bearing clearance than GM branded. Mahle also makes many GM parts, they may be the actual manufacturer which includes Clevite bearings.
Sealed Power 2555A - Rod Bearing
Sealed Power 7298MA - Main Bearing Set
That GM A590 stamp is actually a reference to the bearing material
The page from the FM FP Diesel catalog
Last edited by Sway Tale; 03-04-2021 at 08:14 AM.
