Ken Powell wrote:

Question for Leon and Lynn -
I am building a NA Peripheral Port engine that I would like to
tune for a max of 7000 RPM and 6000 RPM continuous.  Do I need
hardened statioanry gears?  Tracy's experience is that these are
not needed for 6000 RPM, but the forces involved would seem to be
much higher at 7000 RPM.

Thanks,
Ken Powell

"Bass, Jerry" wrote:

Race Beat's book says 8500 and higher for hardened Gears.

      

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