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| How to i.d. steel vs. cast crank? https://www.slantsix.org/forum/viewtopic.php?t=9941 |
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| Author: | Flyntgr [ Mon Jul 26, 2004 7:44 pm ] |
| Post subject: | How to i.d. steel vs. cast crank? |
Is there a simple, foolproof way for someone to tell? The crank I have is out of a 1974 car, but I need to be sure it is forged steel, rather than cast. |
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| Author: | Guest [ Tue Jul 27, 2004 3:59 am ] |
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The journals on a forged crank are wider than a cast. Also the counter weights are larger. |
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| Author: | '74 Sport [ Tue Jul 27, 2004 5:56 am ] |
| Post subject: | |
Stand the crank on its end and tap lightly with a hammer. Rings like a church bell, if it's forged. Cast cranks have a dull sound. Jerry |
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| Author: | Loghead [ Tue Jul 27, 2004 6:38 am ] |
| Post subject: | |
I could be totally in left field, but I was always told that cast cranks have very thin parting lines; visible on the throws and counterweights, whereas forged cranks have wide parting lines, and usually they have visible evidence that there was some grinding performed at the factory on those parting lines.... just my .02 |
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| Author: | CreamedPossum [ Tue Jul 27, 2004 8:05 am ] |
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The moparts website has a really good couple of pictures that show the difference. here is a link to the page. This should tell you everything. http://www.moparts.com/Tech/Archive/motor/8.html Nick |
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