Flywheels
Are all modular engine flywheels a neutral balance? I know the older SBF's had a 28.8oz imbalance and the newer ones had a 50oz imbalance. I put a factory Cobra flywheel on my Mach when I did the T-56 install and just over 1k miles later, it's making all kinds of noises that sounds like it could be an exploded TOB to a main bearing.
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