Quote:
Originally Posted by Chuck33079
The rule of thumb here seems to be that you're fine on the stock motor at or below 500whp. Up to 550whp if you want to run on the ragged edge. Above that, plan for a motor build. Some people get away with 550whp for a long time, but that's being fairly aggressive with a stock motor. For peace of mind, stick around the 500 mark.
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Its not the horse power that breaks the engine apart, its the torque (wheel torque). That being said, a good tune of 600 "WHP" will be much more reliable than bad tune with 350 WHP and will last much longer too.