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Stock C5 Corvette = 405 Net Horse Power (This is the measure. Cars are neither rated at the crank or the wheels anymore. That's right, look in to it. 405 is NOT crank horse power.)
Actual and typical Dyno results (ls1.com source) for Stage II heads and matched Cam ~ 475 RWHP (dyno measured)
Go charger, NOS or twin turbos and 550-600 is EASILY possible.
A corvette C5 will out handle any Mustang, period.
I owned a 2000 Camaro SS. This car is rated 320 Net HP (there's that term again, research!) A non SS Camaro, LS1 rates 305 HP and they say the ram air gets you 15 horse power more. This 15 horse power wouldn't be measurable on a Dyno though, because the car isn't moving right? My car stock dynoed 314RWHP .. And by stock I mean air filter and all. Seeing very close to 400RWHP on a z06 C5 is not only possible, but likely.
I researched the engine a lot, I worked on and modified my car myself. I also raced this Car. My SS Camaro would run circles around < 2003 Mustang Cobra. Stock pan hard rod on a Cobra? I don't think so.
How much hands on experience do you have with the 2003 Mustang Cobra? That's what I thought. Your experience here is as a paper racer. Good work.
As for a "more effecient engine" ... Let's take off the forced induction, run any heads and cam combo you want on that Cobra Engine, and see if it will compete with a factory stock LS6. Never mind a lightly modded one.
Mustang has made great strides with the Cobra, but I'm afraid the Corevette will run circles around it.
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