01:26:22pm, Tuesday, December 10, 2024
Jd 619 crank
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Jd new guy
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I was wondering if anybody could pointe in the correct direction. How many rpms and hp can a big block jd 619 crank handle with out breaking? It would be 619 cubic inch on alcohol, aluminum rods. Are they dependable at 6000 rpm and 2500- 3000hp |
Re: Jd 619 crank
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mr big
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No stock crank can turn 6000 RPM without some serious work for balance at that RPM---maybe not even with extensive work to balance the rotating assembly. Buy a billet and be done with it. |
Re: Jd 619 crank
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Forged
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Forged is stronger than billet. A good forged crank with properly welded counter weights is cheaper and stronger. Everyone loves billet but forging has a much more optimal grain structure to give it more strength. |
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