Quote:
Originally Posted by blykins
I would agree....
Making an engine survive at 8000-9000 is a whole different than your 5500 street cruiser.
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I had a supercharged BB (509 ci) that I was spinning up to 7200 and lunched the motor twice. We switched to a Jesel valvetrain after the first motor we lost, but still lost the second motor. We backed down the RPM's to 6000 on the third motor and it survived. This was sustained RPM's in a boat with a BB, but those extra 1200 rpm's made the difference. My builder at the time said high rpm motors just don't last, and based on my experience I would agree.