small block HELP...keep spinning the same bearing

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#34 (permalink)

11-12-2008, 02:31 PM

JAM1775

CC Member

Join Date: Feb 2000

Location: Long Island New York, NY

Cobra Make, Engine: SPF 974

Posts: 737

Not Ranked

I had my 351W rebuilt after a bad problem from a BG carb. The shop swapped in a polished balanced crank from their shelf which saved time. Two bearings failed within 700 miles. Rebuilt again...by another shop . On a chassis dyno after break in the motor started knocking ...same two bearings burned. Only this time there was a warranty. The crank from the first shop was "rockwell tested" for strength . It was discovered the journals servicing the same two main bearings that kept wearing were soft. The shop rebuilt my motor....again.....and all I paid was splitting the cost of another shop supplied crank. The motor has been running excellent for 21K/ 6 years now.

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