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Old 04-10-2005, 10:11 PM
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Robb/AZ Robb/AZ is offline
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Idea 440 - r&r Camshaft bearings ??

Anyway to do this without removing the rotating assembly ?

No mention of doing the camshaft bearings in the HTRBBME book.

I have a '78 440 from a motorhome that is on the engine stand torn down to the shortblock and I dont want to take it to a machine shop.

The 440 is low mileage and other than the camshaft bearings its in good clean shape. All Im doing is Slipping in a mild camshaft, painting it orange and running it in a e-body till I can afford to do a complete and proper rebuild when it gives out or I get bored later on down the road

I have seen some special tools on the net for $170-$300, but none for rent locally. Im not spending that much on a one time use tool
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Anything I can do to remove and replace those cam bearings, besides take it to the Machine shop ???


thanks
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Old 04-10-2005, 11:49 PM
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pishta pishta is offline
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Yeah, pull the cam out. You are going to have to rent or buy (or make!) a tool that will pull the bearing shells out and drive them in. It usually consists of a series of sized dies that fit into the cam bearing shells and are stepped on one side to allow the pulling rod to pull them out, the same dies are used to pull the new ones in. The rod is threaded and is used to draw in the new bearings from the front or back through the freeze plug. Shop can do it but you stated you wanted to try it yourself. Why are you changing the cam bearings, do you know they are bad? what did the old cam look like?
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Old 04-11-2005, 12:41 AM
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Simply don't change them.

The only time they require changing is if they are visably damaged, or you have hot tanked the motor.

If you are just patching the motor together, don't wory about it.

If you really want to change them, that's no problem. Just pay a shop or buy the tool.
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Old 04-11-2005, 12:50 AM
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Thanks for the input, Im crunching the numbers on what makes the most sense to do.

They need changing. heres the pics, let me know what you think.
The cam though looked great ?

3 are fine looking but 2 of them look like this.... bearing #s 3 and 4








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Old 04-11-2005, 12:52 AM
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Biggrin

Well, there's your oil pressure problem. looks like I called that one. Sorry to see it though. Better get that tool and get to work. Most tools can be rented from Autozone if you have one nearby. Some rental stores have them too.
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Old 04-11-2005, 12:59 AM
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Ill try the rental places tomorrow, let my fingers do the walking.

I never ran this motor, I just took it all the way down to the shortblock to swap the cam and put fresh gaskets in it. Have no idea if there was an oil problem or not, but I can guess that it might have.

Thanks again.
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Old 04-11-2005, 07:30 AM
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Quote:
Originally Posted by Robb/AZ
I never ran this motor, I just took it all the way down to the shortblock to swap the cam and put fresh gaskets in it. Have no idea if there was an oil problem or not, but I can guess that it might have.

Thanks again.
Sorry about that. I confused it with another thread where the engine in question had been over reved for a few seconds and lost pressure.
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