I still don't think an aftermarket pulley did this. The stock crank pulley is not a harmonic balancer or damper. It doesn't look like one, it looks like a pulley to me. Seriously, it only has a small rubber gasket and that is it. The pictures, story and diagram are great... but we aren't removing a harmonic balancer and putting on a crank pulley, we are removing a crank pulley and putting on a lighter crank pulley. The crank and pulley fusing together doesn't cause motor failure either. Now a lightweight crank failing, I have seen on this motor.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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