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Old 12-07-2012, 01:21 PM
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Crank Photos Cast or forged

Can you all tell me what crank this is. Cast or forged....
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Old 12-07-2012, 01:44 PM
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I always go by, Wide parting line, it's forged.
If it's a single thin seam it's cast.
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Old 12-07-2012, 01:55 PM
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take a picture of the throws from the end of the crank,looks cast
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Old 12-07-2012, 02:17 PM
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What do you mean by parting line and what is the throws
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Old 12-07-2012, 02:23 PM
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throws are where the rods bolt on to the crank.take a picture of the snout looking towards the flywheel end about 10 to 15 degrees off center,snout to tail,long wise,endto end from the front
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Old 12-07-2012, 02:35 PM
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there's identification marks on them, look them up, then you know. Its that simple.
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Old 12-09-2012, 12:21 AM
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cast


forged
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Old 12-09-2012, 06:25 AM
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The narrow casting seam means it is a cast crank as Double vision said .another sure way is take a small ball peen hamar lightly tap counterweigkt a forged steel crank will ring ,a cast crank will have a thud sound, Note : counterweight NOT the Journal
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Old 12-09-2012, 06:45 AM
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Billet ?

I had a Crosley Hot shot crank for a Demo when I taught in the Auto dept at the College. The hot shot was machined from a large round bar. It had counter weights on each side of the rod throws. Theoretically you can get some teeter- totter effect in a crank caused by balance weight location, but a forged crank has stronger metal structure resulting from the forging process. But the hot shots were high reving stock.
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Old 12-09-2012, 09:16 AM
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chev ss take a picture like gearhead posted,perfect
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Old 12-10-2012, 05:32 PM
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Hey guys thanks for the tips and info. I figured out my crank is cast which I kinda new thats what it was but sometimes u never know with GM. The crank is in pretty good shape and I plan on reusing it. Thanks again
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Old 12-10-2012, 07:00 PM
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If the crank is good then use it

figured it was cast by the colour
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