Paul the one in the current 455 in my 78 was in the same block different configuration racing NMCA with teh RAIV heads. Car had a jack under the front crossmember slipped off and caught on harmonic balancer. A couple of months later in the staging lanes balancer that was on the crank let go crank spinning it in pulleys not moving -probably cracked it. Crank still doing great and a lot of passes the past 20 years since then and more HP put to it. Just not a stock cast iron balancer.
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1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
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