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.001" undersize main bearing for 383. Can't find a set! #1336713
11/17/12 09:30 PM
11/17/12 09:30 PM
Joined: Mar 2003
Posts: 4,929
Tri-Cities, Washington
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VITC_GTX Offline OP
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Tri-Cities, Washington
My '71 383 came from the factory with .001" undersized mains. I can't seem to find any .001" under main bearings, anyone make them????

Re: .001" undersize main bearing for 383. Can't find a set! [Re: VITC_GTX] #1336714
11/17/12 09:46 PM
11/17/12 09:46 PM
Joined: Aug 2003
Posts: 12,291
Kent, Wa
340SHORTY Offline
Truck Nut
340SHORTY  Offline
Truck Nut

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Posts: 12,291
Kent, Wa
Put standards on it. The engine wont know the difference..


I am truckless..
Re: .001" undersize main bearing for 383. Can't find a set! [Re: VITC_GTX] #1336715
11/17/12 10:00 PM
11/17/12 10:00 PM
Joined: Jan 2003
Posts: 31,046
Oregon
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AndyF Offline
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Oregon
That is a common problem with the low deck blocks. You can try some different brands to see if you get lucky. Or have the crank ground and start over.

Re: .001" undersize main bearing for 383. Can't find a set! [Re: AndyF] #1336716
11/17/12 10:07 PM
11/17/12 10:07 PM
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Tri-Cities, Washington
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VITC_GTX Offline OP
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Quote:

That is a common problem with the low deck blocks. You can try some different brands to see if you get lucky. Or have the crank ground and start over.




What is the largest clearance I can get away with? This will be a low horse build (~335 hp) in a daily driver.

Re: .001" undersize main bearing for 383. Can't find a set! [Re: VITC_GTX] #1336717
11/17/12 11:22 PM
11/17/12 11:22 PM
Joined: Jun 2008
Posts: 3,916
usa
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lewtot184 Offline
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usa
i don't think the .001" under bearings have been made in decades. a standard bearing would probably yeild a .0035" clearance. too loose for a driver. i'd consider going .010" under.

Re: .001" undersize main bearing for 383. Can't find a set! [Re: lewtot184] #1336718
11/17/12 11:43 PM
11/17/12 11:43 PM
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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RapidRobert Offline
Circle Track
RapidRobert  Offline
Circle Track
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Lincoln Nebraska
Mock it up with a std set & measure what you get (& post it). A high vol pump MAY help if it's a bit excessive


live every 24 hour block of time like it's your last day on earth
Re: .001" undersize main bearing for 383. Can't find a set! [Re: VITC_GTX] #1336719
11/18/12 02:43 AM
11/18/12 02:43 AM
Joined: Jan 2003
Posts: 31,046
Oregon
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AndyF Offline
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Oregon
I might have some NOS ones. I bought a bunch of factory big block bearings from a dealership that was going out of business a few years ago.

Re: .001" undersize main bearing for 383. Can't find a set! [Re: VITC_GTX] #1336720
11/18/12 03:27 AM
11/18/12 03:27 AM
Joined: Aug 2011
Posts: 2,864
Pattison Texas
CSK Offline
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Pattison Texas
ck the clearance & if to loose send the bearings out to get coated
http://speedtalk.com/


1968 Charger COLD A/C Hilborn EFI
512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim
2020 T/A 392 Stock 11.79 @ 114.5

Re: .001" undersize main bearing for 383. Can't find a set! [Re: CSK] #1336721
11/18/12 03:29 AM
11/18/12 03:29 AM
Joined: Jun 2004
Posts: 3,319
Chicago Burbs
sthemi Offline
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Posts: 3,319
Chicago Burbs
try calling Frank Mitchell, he still has tons of Mopar engine parts, he shipped me an NOS piston for my Hemi this Spring..

Re: .001" undersize main bearing for 383. Can't find a set! [Re: sthemi] #1336722
11/18/12 07:10 AM
11/18/12 07:10 AM
Joined: Aug 2011
Posts: 1,083
SE PA
Yellow Fever Offline
super stock
Yellow Fever  Offline
super stock

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Posts: 1,083
SE PA
Contact King Bearings directly.

http://www.kingbearings.com/contact.php

Re: .001" undersize main bearing for 383. Can't find a set! [Re: Yellow Fever] #1336723
11/18/12 07:19 AM
11/18/12 07:19 AM
Joined: Aug 2011
Posts: 1,083
SE PA
Yellow Fever Offline
super stock
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SE PA
Hmmm,
Main and rod bearing sizes std, .001, .002,
.010, .020, .040, .060

http://www.kanter.com/p24-mon.html

Re: .001" undersize main bearing for 383. Can't find a set! [Re: VITC_GTX] #1336724
11/18/12 05:31 PM
11/18/12 05:31 PM
Joined: Nov 2006
Posts: 1,459
oklahoma
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forphorty Offline
pro stock
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Joined: Nov 2006
Posts: 1,459
oklahoma
Quote:

Quote:

That is a common problem with the low deck blocks. You can try some different brands to see if you get lucky. Or have the crank ground and start over.




What is the largest clearance I can get away with? This will be a low horse build (~335 hp) in a daily driver.


I had over four thou clearance on the mains on a street 440 when it was put together over twenty years ago. Has had a lot of street miles along with some passes at the track. No problems.Has 60 psi oil pressure at 1000 rpm and 80 going down the road with a Milodon hi vol pump.

Re: .001" undersize main bearing for 383. Can't find a set! [Re: forphorty] #1336725
11/18/12 08:24 PM
11/18/12 08:24 PM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
Too Many Posts
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Posts: 21,318
Manitoba, Canada
Quote:

Quote:

Quote:

That is a common problem with the low deck blocks. You can try some different brands to see if you get lucky. Or have the crank ground and start over.




What is the largest clearance I can get away with? This will be a low horse build (~335 hp) in a daily driver.


I had over four thou clearance on the mains on a street 440 when it was put together over twenty years ago. Has had a lot of street miles along with some passes at the track. No problems.Has 60 psi oil pressure at 1000 rpm and 80 going down the road with a Milodon hi vol pump.




Sure, but if he has it apart now, why not just do it right and either cut the crank .010 or locate the .001 bearings? I'd spend the couple extra dollars now so I didn't even have to worry about it later.

Re: .001" undersize main bearing for 383. Can't find a set! [Re: Yellow Fever] #1336726
11/19/12 02:44 AM
11/19/12 02:44 AM
Joined: Jan 2003
Posts: 75,043
U.S.S.A.
JohnRR Offline
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Quote:

Hmmm,
Main and rod bearing sizes std, .001, .002,
.010, .020, .040, .060

http://www.kanter.com/p24-mon.html




That's a generic listing , there isn't any guarantee they have a .001 oversize set.

Re: .001" undersize main bearing for 383. Can't find a set! [Re: JohnRR] #1336727
11/19/12 11:36 PM
11/19/12 11:36 PM
Joined: Jan 2003
Posts: 11,912
APACHE JUNCTION AZ
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Joesixpack Offline
I Live Here
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Posts: 11,912
APACHE JUNCTION AZ

Re: .001" undersize main bearing for 383. Can't find a set! [Re: Joesixpack] #1336728
11/20/12 03:12 PM
11/20/12 03:12 PM
Joined: Jan 2003
Posts: 16,376
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dogdays Offline
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Bill Cowger, how goes the parts business? Whaddya have for putting bigblock in a sweptline? How about replacement insulator pads for the stock 318?

R.

Re: .001" undersize main bearing for 383. Can't find a set! [Re: Joesixpack] #1336729
11/20/12 04:11 PM
11/20/12 04:11 PM
Joined: Jan 2003
Posts: 75,043
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
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U.S.S.A.
Quote:

.002
http://www.ebay.com/itm/FED-MOGUL-MS876P...=p2047675.l2557




That is one old set of main bearings ... nice find

Re: .001" undersize main bearing for 383. Can't find a set! [Re: JohnRR] #1336730
11/20/12 10:40 PM
11/20/12 10:40 PM
Joined: Jan 2003
Posts: 11,912
APACHE JUNCTION AZ
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Joesixpack Offline
I Live Here
Joesixpack  Offline
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Joined: Jan 2003
Posts: 11,912
APACHE JUNCTION AZ
Parts business is great....moved into 1300 sq foot warehouse,have branched into antique ignition&electrical parts for all cars*trucks,tractors,1920-1975. Worldwide sales. Sorry dont have anything for BB truck conversion. Lower back problems have made me switch to lightweight parts.....check moparts truck parts section....







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