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Main Bearings |
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Trader
AMC Addicted Joined: May/15/2018 Location: Ontario Status: Offline Points: 6881 |
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I did a search and the only complete "set" of 5 main bearings other then the AMC/Jeep 290-401 are the AMC 4.7l motor.
No GM, Ford or Mopar. GM 396, 427, 454, 502 bearings look like they may be made to fit, all but the thrust bearing. I have a call in to see what would be the cost to have old bearings refurbished with new Babbitt. I have several sets of old shells. I somehow doubt that that will be cost effective even if I machine them to size myself. Thanks John for the offer. I may take you up on that when I get into these motors later this summer.
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rang-a-stang
AMC Nut Joined: Sep/25/2018 Location: Camarillo, CA Status: Offline Points: 272 |
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I used some Sealed Power bearings in .001 under and have these left over. Summit shows them in stock for ~$78.
Edited by rang-a-stang - May/21/2021 at 1:21pm |
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79 Cherokee, 401
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bbgjc
AMC Addicted Joined: Nov/24/2009 Location: No.VA Status: Offline Points: 1660 |
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King will still be supplying AMC parts. They just are waiting for resupply, along with everybody else.
My valve supplier is waiting to get there inventory back up for 40 plus different engines, including AMC. Glad I'm a hoarder when it comes to parts, since this COVID thing is a nightmare. |
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amc67rogue
AMC Addicted Joined: Nov/05/2008 Location: Phx. AZ. Status: Offline Points: 1578 |
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BB Chevy main housing bores are the same size as AMCs .
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Keith Coggins 67Rogue X code
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WesternRed
AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799 |
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Would be good if we could get some minus 40 mains again, maybe even sizes beyond that.
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I've finally given up drinking for good...........now I only drink for evil.
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bbgjc
AMC Addicted Joined: Nov/24/2009 Location: No.VA Status: Offline Points: 1660 |
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We can. King Bearing goes all the way down to 60 under for the 401's/ 70 390.
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WesternRed
AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799 |
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Cool, that will make life easier, I have some sad cranks that new a lot of work.
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I've finally given up drinking for good...........now I only drink for evil.
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mark09
AMC Nut Joined: Dec/14/2012 Location: indiana Status: Offline Points: 281 |
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Maybe I'm just that old but we used to weld up and turn down, nitride and run with correct bearings. Put back in car go racing. Is there any reason to not do this now?
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Steve_P
AMC Addicted Charter Member Joined: Jun/28/2007 Status: Offline Points: 3806 |
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obviously money. Welding up and grinding 5 mains would probably cost more than 5X as much as just grinding them. Get a quote and let us know.
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mark09
AMC Nut Joined: Dec/14/2012 Location: indiana Status: Offline Points: 281 |
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Usually it was only 6-8 rod journal, back then about $100 for all.
After several times I went to a 8 quart pan and had no more problems.
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