Thread: chevy small block 355 metallic sound

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So are you saying the crank was bent, and that caused it to chew up the main bearings? I don't understand "...basically grounded down by the mains".

Originally Posted by rspears

So are you saying the crank was bent, and that caused it to chew up the main bearings? I don't understand "...basically grounded down by the mains".

the crank wasn't manufactured correctly. crank is cast steel, powered metal. if you don't get the metal at the right temp it will be like butter. in this case, my crank was butter. you can take a needle and slide it across the journal and it'll put a decent scratch in it. took it to my machinist. he tested it. eagle is junk along with cast cranks. bought a forged steel 4340 scat crank this time.

also, exact same words he said, "the mains bearings should of lost, but in this case, the crank lost." my main journals are shot complete, it actually shaved them all down so my crank would wobble on my main bearings.