I shifted at 8000 all the time. at least 100 to 120 passes down the track, with no problems and it was my daily driver. It never burned a drop of oil or had any mechanical problems.
till the limiter let it hit 8500 rpm.
8000 rpm should not be a problem for this engine.
Z
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 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.
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