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IO-360 C1C switch to IO-360 C1C6

Apr 25, 2021
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Does anyone know if a C1C6 can be installed into a '75 Arrow in place of a C1C?
The difference in the engine is the counterweights and associated necessary hardware (crank, weights, etc.). And IF that change is approved does it remove the RPM restriction (2100 to 2300) or is that a 'prop' restriction?
Thanks in advance.

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