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Ask about weight, not material
The question you should be asking is "how heavy is your flywheel?" when comparing them versus each other. They are not all the same weight. There are lightweight steel flywheels that approach the weight of an aluminum one. Single disc, multi-disc, etc. Ask about the weight.
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CSX4068, '69 Bronco, '70 BOSS 302, '87 Mustang GT, '08 Roush Trak Pak
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