RE: Head-to-Head Comparison: 2008 Shelby GT500 Mustang vs. 2008 Challenger SRT8
Like the old adage goes, "there is not replacement for displacement".
With a beefier engines comes a stronger engine with a bigger crank, 4-bolt mains etc. and that means it take take a lot more abuse.
Now add a forced induction system on top of that and you get one heck of a monster. Turbos are better with fuel economy than
a supercharger because there is no parasitic drain on the engine everthing else being equal.
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