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Crank ID
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Powerflite
Posted 2018-05-27 2:06 PM (#564081)
Subject: Crank ID



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I picked up a '57 D500 325 hemi motor with single 4bbl setup (but the block is KDS so originally a 325 poly) yesterday and it came with a couple of other parts. This crank is one of them. The mains are 2.75" and the rods are 2.375" so that tells me maybe RB big block - 413, 426 or 440. Are there other motors that used that size or is it definitely for a big block Chrysler? It is forged, but it has these weird tabs sticking off the center parts of it. Are all '58-'61 cranks 8 bolt? This one is 6 bolt so I would assume it is for the later motors, correct? Another part that came with it is an old Mallory DSM 6 volt performance coil. Unusual old speed equipment, but completely useless.



(Crank1.jpg)



(Crank2.jpg)



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Attachments Crank1.jpg (176KB - 16 downloads)
Attachments Crank2.jpg (183KB - 17 downloads)
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57chizler
Posted 2018-05-27 2:26 PM (#564082 - in reply to #564081)
Subject: RE: Crank ID



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Yes, the pre-'62 V8 cranks had 8 unthreaded holes, the '62-later had 6 threaded holes. The "tabs" opposite the counterweights are quite common. You have a '62-later RB crank.
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Powerflite
Posted 2018-05-27 3:07 PM (#564086 - in reply to #564081)
Subject: Re: Crank ID



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Thanks for the help John.
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