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304 crank

v8_bomberdore

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can anyone tell me what the stock 304 crankshaft is made out of
 

Pub247

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cast iron i think theyre more likely spherical cast iron rather than nodular defenitely not grey cast i'd say i know blocks are usually grey cast
 

Pub247

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The order from weakest to strongest is grey, spherical, nodular this refers to amount of graphite content and it's structure within the iron. I'm leaning more towards spherical as most aftermarket are nodular cast (within cast cranks that is) for better strength and reliability.
Obviously a forged crank is the next step up then all out on billet crank
 

xx5047

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nodular cast iron,good for 8000 rpm correctly balanced with the factory rods/sps.
 
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