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Originally Posted by greg schroeder
For a 740 engine HP 2700lb car less 18% power once to the wheels the perfect world would be 144 mph with 9.4s. Figure the car can't hook at all and the day is a DA of around 2000 ft and the run is terrible, do they still trap high 130s mph in the low 10s? I'm really curious.
I think the reality is most cars aren't making anywhere near engine HP once they get to the wheels. It's not really a big deal, but from what I can tell trap speeds are pretty close to reality for actual wheel power. My trap when on simple drag radials, speed calculator, comes out near exact to the actual wheel dyno. I think you're right about ET calculators, simply because Cobras generally don't knock off the best 60ft times.
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IF that motor really makes 740 hp on an
engine dyno, I would suspect that car should be putting about 575-600 to the wheels. Yes, you lose that much on a Cobra through the IRS and sidepipes.
Then, factor in the poor 60fts, and I would say even with a good driver, that's an 11.0 car. I am sure the trap speed would show the hp potential of the car, but it's not going to ET as good as it traps.
Put that motor in a Mustang, or a live axle Cobra with open exhaust, and you just could see 9.90s from it.