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I pulled the stock L48 from my 77 this winter for a top end refresh, reseal, and paint. The main bearings looked OK, but I'm not sure about the front cam bearings. Any opinions from our experts?
That looks damaged from somebody removing/installing a camshaft without proper support. There is a tool for this job which helps prevent this damage but the tool has to be used with some common sense as well. You can also purchase 3 long (carriage) bolts for the task... which is what I do. Personally, I would replace them- that gouging is pretty nasty. IMOP
You need to measure the inner diameter of that bearing so that you can verify the new one is the correct size when installed. Also check the other bearings to verify that same kind of damage is NOT present on them. Some minor nicks may be OK; that amount of damage is not.
Word of advice....cam bearings go in with a specific order.....this order is usually print on the box flap when you open it. BUT.....make sure somebody did not mixed up the bearing in the box. Look closely at the number on each bearing before you install.
I use the tool in the picture. Light taps are the order.....do not hit it too hard and make sure to check for burrs before tapping the cam bearings in.
Thanks guys, I may send this one to the machine shop to do.
Good plan. I'd also have them pull the oil galley plugs and run the block thru their hot tank. Scrub all the oil galleys with brushes and replace all the freeze plugs. It's out and the added expense will be minimal.
Good plan. I'd also have them pull the oil galley plugs and run the block thru their hot tank. Scrub all the oil galleys with brushes and replace all the freeze plugs. It's out and the added expense will be minimal.
Good advice. I have my own tank and when I tank a block I also clean out the oil galleries with brushes and a solvent. There can be a lot of spooge in there.
Opinions On Bearings
