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Sealed Power Main Bearing Help #1206945
03/31/12 01:29 PM
03/31/12 01:29 PM
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn Offline OP
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I’ve been looking to buy a 0.010” undersized 3/4 groove main package for a Mopar B 383 engine.

Up until recently it was available from Summit Racing and saved to my wish list. So yesterday when I checked it, it was listed as a 1/2 groove. I called and talked with customer service who told me the 3/4 groove bearing was PN #Z4924M and has been superseded by PN #Z4924MA, which is a 1/2 groove version.

So the search began, I looked around the internet and called various sources to see if there are any old copies left in national inventory but nobody seems to know anything about it.

So just wondering if there are any parts guys here that may know how to track down an apparently obsolete part?

Re: Sealed Power Main Bearing Help [Re: CompSyn] #1206946
03/31/12 04:37 PM
03/31/12 04:37 PM
Joined: Jan 2003
Posts: 75,098
A Banana Republic near you.
JohnRR Offline
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good luck , low deck bearing selection is like 383 piston selection ... it sucks ...

Re: Sealed Power Main Bearing Help [Re: CompSyn] #1206947
03/31/12 04:45 PM
03/31/12 04:45 PM
Joined: Feb 2012
Posts: 4,467
Morristown Tn.
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71birdJ68 Offline
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Morristown Tn.
I would not use sealed power. Some of their stuff is made in Mexico now. I bought a engine kit and the rod bearings didn't even line up.I'd use Clevite's.

Re: Sealed Power Main Bearing Help [Re: JohnRR] #1206948
03/31/12 04:57 PM
03/31/12 04:57 PM
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn Offline OP
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Quote:

good luck , low deck bearing selection is like 383 piston selection ... it sucks ...




Yeah, that's the truth, but then, for just one moment, there was a stroke of luck with the availability of the Sealed Power 3/4 groove. I guess luck ran out because it looks like they discontinued them. Wish I knew this stuff ahead of time

I figured with the popularity of 383 and 400 block strokers that the market would support this type of bearing, but everybody must favor the full groove I guess.

Gee, guess I need to become independently wealthy so I can buy up all these parts I want before they disappear off the market.

Guess I was hoping that maybe, just maybe, there was one or two sets kicking around the country somewhere on the back shelf of some wharehouse. The parts guys say no, they're not listed so they're not available.

Last edited by CompSyn; 03/31/12 05:11 PM.
Re: Sealed Power Main Bearing Help [Re: CompSyn] #1206949
03/31/12 05:08 PM
03/31/12 05:08 PM
Joined: Jan 2003
Posts: 75,098
A Banana Republic near you.
JohnRR Offline
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Wish I knew this stuff ahead of time

I figured with the popularity of 383 and 400 block strokers that the market would support this type of bearing, but everybody must favor the full groove I guess.






I wish I looked into it more also before I paid to have the thrust register on my 383 block opened up to fit the later wide thrust face thrust bearing that is no longer available ... and hasn't been for a very long time

Update: Sealed Power Main Bearing Help [Re: JohnRR] #1206950
04/01/12 11:18 PM
04/01/12 11:18 PM
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Pacific NW USA
CompSyn Offline OP
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Update:

Okay, well it all started when I read in Andy Finkbeiner's latest Max-Performance Big Block book that one vendor was offering 3/4 groove main bearings for both B and RB blocks. This was at the time of the books writing; 2009.

So when Summit Racing's online application guide listed a Sealed Power 3/4 groove bearing for the B-bock, I thought this must be it, another option besides full groove.

With a little more internet research I found the online Federal-Mogul catalog and looked up the bearing P/Ns. With the actual bearing sizes listed (not found at Summit Racing) I discovered that the Sealed Power P/N 4924M is for RB applications. Summit's application guide lists them for both B and RB applications, which I guess is partly true if one were to bore out mains on the B block to fit the RB bearing size.

So unless I'm missing something, the main bearing selection for Chrysler B-blocks is full groove, full grove and full groove.

And all this controversy over nothing

Re: Update: Sealed Power Main Bearing Help [Re: CompSyn] #1206951
04/02/12 12:32 AM
04/02/12 12:32 AM
Joined: Jan 2003
Posts: 1,607
Western Washington
Sixgun Offline
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Western Washington
Try search engines for old part number, sometimes you can find stuff that way, or even Flea Bag.
Rock auto etc.They can't have ALL got used up?

Re: Update: Sealed Power Main Bearing Help [Re: Sixgun] #1206952
04/02/12 12:41 AM
04/02/12 12:41 AM
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Posts: 1,285
Pacific NW USA
CompSyn Offline OP
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Quote:

Try search engines for old part number, sometimes you can find stuff that way, or even Flea Bag.
Rock auto etc.They can't have ALL got used up?




You know, one would think that if a 3/4 groove B-block bearing really did exist at one time, there would be a copy or two collecting dust on a shelf somewhere. I've been looking high and low, but it would help if I had a manufacture and P/N # of this said bearing.

Re: Sealed Power Main Bearing Help [Re: CompSyn] #1206953
04/02/12 04:26 PM
04/02/12 04:26 PM
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
B
BradH Offline
Taking time off to work on my car
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Posts: 15,439
Val-haul-ass... eventually
To my knowledge there's never been a 3/4-groove low-deck main bearing offered. Everyone I know w/ a B-block engine runs a narrow full-groove bearing since the only other option is a 1/2 groove.

The RB engines have always had a wider option for bearing styles & materials. I do run the 3/4-groove FM tri-metals in my 440s.

Re: Sealed Power Main Bearing Help [Re: BradH] #1206954
04/02/12 07:14 PM
04/02/12 07:14 PM
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
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Quote:

To my knowledge there's never been a 3/4-groove low-deck main bearing offered. Everyone I know w/ a B-block engine runs a narrow full-groove bearing since the only other option is a 1/2 groove.

The RB engines have always had a wider option for bearing styles & materials. I do run the 3/4-groove FM tri-metals in my 440s.




Who makes a 1/2 groove low deck bearing? I'd go with a 1/2 groove if I could find a set.

Re: Sealed Power Main Bearing Help [Re: CompSyn] #1206955
04/03/12 12:09 AM
04/03/12 12:09 AM
Joined: Aug 2003
Posts: 43,317
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Quote:

Quote:

To my knowledge there's never been a 3/4-groove low-deck main bearing offered. Everyone I know w/ a B-block engine runs a narrow full-groove bearing since the only other option is a 1/2 groove.

The RB engines have always had a wider option for bearing styles & materials. I do run the 3/4-groove FM tri-metals in my 440s.




Who makes a 1/2 groove low deck bearing? I'd go with a 1/2 groove if I could find a set.


Half groove would be any stock replacement set what size do you need? I stock most of them


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Sealed Power Main Bearing Help [Re: Cab_Burge] #1206956
04/03/12 01:29 AM
04/03/12 01:29 AM
Joined: Apr 2008
Posts: 1,285
Pacific NW USA
CompSyn Offline OP
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Quote:

Quote:

Quote:

To my knowledge there's never been a 3/4-groove low-deck main bearing offered. Everyone I know w/ a B-block engine runs a narrow full-groove bearing since the only other option is a 1/2 groove.

The RB engines have always had a wider option for bearing styles & materials. I do run the 3/4-groove FM tri-metals in my 440s.




Who makes a 1/2 groove low deck bearing? I'd go with a 1/2 groove if I could find a set.


Half groove would be any stock replacement set what size do you need? I stock most of them




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