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What is the real dyno tested hp on the 2011-2014 5.7l challengers,im not buyin the 375 hp advertised rating.
 

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Indeed. While is may in reality be underrated, it's only by a little...like 5-10 hp. Same with the SRT, only slightly underrated. Don't be so pre-occupied with HP anyway, it lives in an equation. TQ is REAL and these Hemis make lots of it, especially at low rpms. Both motors have great power curves, and power is really area under the curve, not just the peak number.
 

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The 5.7 makes 385-390 flywheel hp actual.
 
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