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All Forged cranks drilled for pilot bushing?
#1382707
02/06/13 10:19 PM
02/06/13 10:19 PM
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Joined: Jan 2003
Posts: 3,967
S.I. N.Y.
1MYTGTX
OP
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OP
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Joined: Jan 2003
Posts: 3,967
S.I. N.Y.
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Are all Mopar vintage forged cranks drilled for a pilot bushing?
'72 440 with a forged crank....would it be pre drilled for the bushing for the 4 speed trans?
1MYTGTX
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Re: All Forged cranks drilled for pilot bushing?
[Re: roadhazard]
#1382710
02/06/13 11:03 PM
02/06/13 11:03 PM
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Joined: Jan 2003
Posts: 75,015
U.S.S.A.
JohnRR
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I Win
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Quote:
Not all are drilled for the 4 speed bushing 
 , it should be drilled , but may not be finished to size. Napa used to sell an undersize bushing to fit but I bought what I thought was the bushing and it was not. there is a later bushing for dakotas and such that fits the convertor snout register , you may have to trim a little off the end of the input though .
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Re: All Forged cranks drilled for pilot bushing?
[Re: JohnRR]
#1382711
02/06/13 11:22 PM
02/06/13 11:22 PM
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Anonymous
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Anonymous
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Forged cranks for automatic equipped cars would typically have been rough drilled, but not finished machined for a pilot bushing. I think the NAPA bushing for the semi-finished pilot hole is still available, and it's OK in a pinch, but the best solution is either to machine the crank properly or to use the roller bearing mentioned above that fits into where the torque convertor snout would go.
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Re: All Forged cranks drilled for pilot bushing?
#1382712
02/07/13 08:28 AM
02/07/13 08:28 AM
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Joined: Jan 2003
Posts: 3,967
S.I. N.Y.
1MYTGTX
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OP
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S.I. N.Y.
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Thanks for the replies all. My pipe dream of converting to an 18 spline 4 speed might be just that....a pipe dream.
Anyone have info/part #'s on these special bushings?
1MYTGTX
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Re: All Forged cranks drilled for pilot bushing?
[Re: 70Cuda383]
#1382714
02/07/13 08:57 AM
02/07/13 08:57 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
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Marysville, O-H-I-O
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the stock pilot bearing for any magnum series truck should be the same. regardless, the parts store monkeys can't look anything up by saying "any magnum engine truck" here's what the bushing/bearing looks like, and you can see that with a few quick smacks with a rubber mallet, it'll drive it home into the hub for the torque converter where it will sit nice and snug. (this is a spare 383 I have sitting in my garage, and a new bushing for the 5.9L that's in my dakota)  
**Photobucket sucks**
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Re: All Forged cranks drilled for pilot bushing?
[Re: LaRoy Engines]
#1382722
02/07/13 01:15 PM
02/07/13 01:15 PM
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Joined: Jan 2003
Posts: 75,015
U.S.S.A.
JohnRR
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I Win
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Quote:
Please, don't cut off the end of the input shaft of an 18 spline hemi transmission. Have the crankshaft properly prepared. In the end, it is however YOUR transmission, do as you will.
Why ? It's not like he is cutting a ton off ,it would still work in another crank and It's not that expensive to have the end retipped should someone decide they don't want to use the dakota part for some silly reason. The eagle crank in my stroker is not sized properly for the stock Pilot bushing , I'm going to trim my trans , 18 spline A body unit I made and use the dak part ...
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Re: All Forged cranks drilled for pilot bushing?
[Re: JohnRR]
#1382724
02/07/13 06:17 PM
02/07/13 06:17 PM
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Joined: Oct 2011
Posts: 559
Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Quote:
Quote:
Please, don't cut off the end of the input shaft of an 18 spline hemi transmission. Have the crankshaft properly prepared. In the end, it is however YOUR transmission, do as you will.
Why ? It's not like he is cutting a ton off ,it would still work in another crank and It's not that expensive to have the end retipped should someone decide they don't want to use the dakota part for some silly reason. The eagle crank in my stroker is not sized properly for the stock Pilot bushing , I'm going to trim my trans , 18 spline A body unit I made and use the dak part ...
Why? Personal frustration with the practice! Of the hemi 4-spd transmissions I own, two have the input shaft cut short and one is cut down to Chevy diameter. Then there are the two 23 spline input shafts cut short. I didn't cut any of them.
Its kinda like the crate motors sent to us to rebuild 'cause the original builders don't know what they are doing or won't take the time or expense to do it right.
Its okay to cut them off your transmission if you want. I'm just pleading that you may reconsider and finish the installation another way.
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Re: All Forged cranks drilled for pilot bushing?
[Re: 1MYTGTX]
#1382726
02/07/13 09:26 PM
02/07/13 09:26 PM
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Joined: Jan 2003
Posts: 6,224
JERSEY
RJS
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master
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JERSEY
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I would assume that roller bearing you guys are showing is a cheap alternative to the roller bearing that Brewers/Passion Mancini would sell???
So Chris you going to swap in a Dana too??
Last edited by RJS; 02/07/13 09:27 PM.
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