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440Source Crankshaft journal diameters are spot on
#3210779
02/05/24 11:36 AM
02/05/24 11:36 AM
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Joined: Jun 2022
Posts: 31
Pennsylvania
19_Dart_68
OP
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OP
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Joined: Jun 2022
Posts: 31
Pennsylvania
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Is this the norm or did I get a bad one? 440 stroker crank, 4.25" stroke, 2.7500 Mains, BB Chevy rod journal size - 2.2000"
All mains are undersized...none measure 2.750" and some are .0007 - .0008" too small
the first 3 rod journals (starting at the front) are spot on at 2.2000", the rest are all undersized...some as much as .0008"
I don't have the notebook next to me to give the exact measurements, but damn....not really what I was expecting from a brand new crankshaft.
Any similar experiences? or is this a fluke?
Last edited by 19_Dart_68; 02/06/24 11:35 PM.
68 Dart - 440 Swap in Progress...please stand by
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: 19_Dart_68]
#3210789
02/05/24 11:58 AM
02/05/24 11:58 AM
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Joined: Feb 2004
Posts: 34,883
S.E. South Dakota !
bigdad
Still Posting A Lot
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Still Posting A Lot
Joined: Feb 2004
Posts: 34,883
S.E. South Dakota !
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Mike@440Source
however, Southern California is getting very bad weather might be tough to reach.
The lips of fools bring them strife, and their mouths invite a beating.Proverbs 18:6
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: AndyF]
#3210811
02/05/24 12:50 PM
02/05/24 12:50 PM
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Joined: Jan 2012
Posts: 2,645
Stuttgart, Arkansas
rickseeman
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master
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Posts: 2,645
Stuttgart, Arkansas
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Doesn't sound good. Somethings are frustrating. But if it was 2.750" (stock, which would give you stock clearance, which nobody says is enough) then you would be coming on here posting "Where can I get bearings with more clearance." Mock it up and see what your clearances are. Then decide if you're upset. My guess is you aren't going to feel as bad. This isn't the 70's. We don't just put the bearings in without checking anything and slap it back together. We're measuring in tenths now. (As shown in your original post.) Juggling bearings is part of building something today.
2011 Drag Pak Challenger
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: 19_Dart_68]
#3210820
02/05/24 01:17 PM
02/05/24 01:17 PM
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Joined: Dec 2006
Posts: 2,109
Byron, NY
W.I.N. Racing
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top fuel
Joined: Dec 2006
Posts: 2,109
Byron, NY
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I'd send it back...with the only alterative being that all similar journals be re-finished (polish or grind) to the same size. On top of that you didn't pay for a "blem" crank why would you accept one. Defiantly would not mix and match bearing sizes though...too easy to mess things up when the parts are correct. 
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: W.I.N. Racing]
#3210827
02/05/24 01:40 PM
02/05/24 01:40 PM
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Joined: Jan 2012
Posts: 2,645
Stuttgart, Arkansas
rickseeman
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master
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Stuttgart, Arkansas
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If it will make you feel better, the last Callies Magnum crank I got from Ray Barton was, I believe, .0008" under on the mains and .0006" under on the rods. Yes, I wish it was standard like you do. But I assume he orders them this way so it will have bearing clearance. If the crank is standard, your clearance is going to standard, and nobody want things that tight anymore.
2011 Drag Pak Challenger
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: 19_Dart_68]
#3210830
02/05/24 01:53 PM
02/05/24 01:53 PM
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Joined: Mar 2008
Posts: 292
NY
challenger451ci
enthusiast
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enthusiast
Joined: Mar 2008
Posts: 292
NY
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Is this the norm or did I get a bad one? 440 stroker crank, 4.25" stroke, 2.7500 Mains, BB Chevy rod journal size - 2.2000"
All mains are undersized...none measure 2.750" and some are .0007 - .0008" too small
the first 3 rod journals (starting at the front) are spot on at 2.2000", the rest are all undersized...some as much as .0008"
I don't have the notebook next to me to give the exact measurements, but damn....not really what I was expecting from a brand new crankshaft.
Any similar experiences? or is this a fluke?
My Callies crank measures between 2.7491" and 2.7494" on the mains and 2.1993" and 2.1994" on the rods. Doesn't seem like 0.0007" or 0.0008" under the nominal would be out of line?? I wouldn't expect the journals to measure right on the nominal dimension. You might have to use half of an 0.001" under or 0.001" over bearing to get the clearances where you need them. I can't remember the last time I built a motor only using one set of bearings. I have a shelf of left over half shells... 
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: challenger451ci]
#3210835
02/05/24 02:39 PM
02/05/24 02:39 PM
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Joined: Jun 2022
Posts: 31
Pennsylvania
19_Dart_68
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OP
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Pennsylvania
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My Callies crank measures between 2.7491" and 2.7494" on the mains and 2.1993" and 2.1994" on the rods. Doesn't seem like 0.0007" or 0.0008" under the nominal would be out of line?? I wouldn't expect the journals to measure right on the nominal dimension. You might have to use half of an 0.001" under or 0.001" over bearing to get the clearances where you need them. I can't remember the last time I built a motor only using one set of bearings. I have a shelf of left over half shells... That's pretty much what mine looks like.
68 Dart - 440 Swap in Progress...please stand by
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: 19_Dart_68]
#3210845
02/05/24 03:43 PM
02/05/24 03:43 PM
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Joined: Mar 2003
Posts: 2,498
PA
moparacer
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top fuel
Joined: Mar 2003
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PA
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Send back and get a Molnar?
My Molnar crank was spot on when we built my engine. No fudging bearing sizes to get clearance. Engine builder even commented on how nice it was. Can't say that about the other budget cranks we have used over the years.
Just have to use chamfered mains.
Last edited by moparacer; 02/05/24 03:43 PM.
67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: moparacer]
#3210871
02/05/24 04:50 PM
02/05/24 04:50 PM
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Joined: Dec 2013
Posts: 4,672
Wichita
GY3
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master
Joined: Dec 2013
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Wichita
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Send back and get a Molnar?
My Molnar crank was spot on when we built my engine. No fudging bearing sizes to get clearance. Engine builder even commented on how nice it was. Can't say that about the other budget cranks we have used over the years.
Just have to use chamfered mains. Same!
'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: 19_Dart_68]
#3210872
02/05/24 04:51 PM
02/05/24 04:51 PM
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Joined: Aug 2003
Posts: 43,157
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,157
Bend,OR USA
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I would much rather have them to small than a TINY bit to BIG Next step is to install and torque the main bearings and see what the I.D. is on all five bearings, same thing on the rods, torque them up and see what the I.D. is and then do the math for oil clearances. I like .0025+ on the rods and .0030 + on the mains I use the narrow full groove Seal Power truck main bearings and what ever brand rod bearings I have in stock that give me those rods bearing clearances I want, I have been using a lot of King brand rod bearings this past two years  
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: Stanton]
#3211050
02/06/24 09:24 AM
02/06/24 09:24 AM
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Joined: Feb 2005
Posts: 20,173
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,173
PA.
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Most guys can’t measure .001 let alone .0002
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: pittsburghracer]
#3211058
02/06/24 10:18 AM
02/06/24 10:18 AM
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Joined: Jun 2022
Posts: 31
Pennsylvania
19_Dart_68
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Thanks for all the great info, gents. It is much appreciated!
68 Dart - 440 Swap in Progress...please stand by
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: 19_Dart_68]
#3211062
02/06/24 10:26 AM
02/06/24 10:26 AM
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Joined: Feb 2005
Posts: 20,173
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,173
PA.
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Thanks for all the great info, gents. It is much appreciated! So what are you going to do.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: pittsburghracer]
#3211064
02/06/24 10:29 AM
02/06/24 10:29 AM
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Joined: Jan 2003
Posts: 10,022
MN
JERICOGTX
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,022
MN
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Most guys can’t measure .001 let alone .0002
That's like picking fly sh!t out of pepper...
69 GTX
68 Road Runner
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: rickseeman]
#3211066
02/06/24 10:32 AM
02/06/24 10:32 AM
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Joined: Jan 2003
Posts: 4,048
Shelby Twp. Mi
HardcoreB
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Shelby Twp. Mi
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Doesn't sound good. Somethings are frustrating. But if it was 2.750" (stock, which would give you stock clearance, which nobody says is enough) then you would be coming on here posting "Where can I get bearings with more clearance." Mock it up and see what your clearances are. Then decide if you're upset. My guess is you aren't going to feel as bad. This isn't the 70's. We don't just put the bearings in without checking anything and slap it back together. We're measuring in tenths now. (As shown in your original post.) Juggling bearings is part of building something today. X2!!!
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Re: 440 Source Crankshaft journal diameters are very different.
[Re: rickseeman]
#3211076
02/06/24 11:07 AM
02/06/24 11:07 AM
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Joined: Jan 2003
Posts: 10,022
MN
JERICOGTX
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,022
MN
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Juggling bearings is part of building something today. My engine uses half KING rod bearings, and half Clevites.
69 GTX
68 Road Runner
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