Quote:
Originally Posted by Bad70supreme
Heres an example of how cars making the same peak power, but one pulls harder on the top end!
My olds...468ci 530hp peak at 5600rpms/ runs avg. 11.60 1.60 60ft @ 111-113
2010 camaro LS3 , add headers and cold air.. flywheel hp is about 490@ 5900 The camaro still turns at lest 112mph ( matches the more powerfull olds) but slower in the 1/4 at mid to low 12s.
The reasone MPH is the same even though the camaro makes LESS power is becuse its usable peak power hangs on longer, it might peak at 5900 but it still pulls hard to 6500! Over shifting helps make faster Et's because the engine breaths so well and at high RPMs the motor is still pulling like bull!
My olds with MORE power, after 5600rpms peak power... power falls off Fast! Over shifting slows the car down, I would short shift 1-2 at 5100rpms and the car was faster!
But the olds make so much usable power /torque from 3000-5600 that at the 60ft and 1/8th mile the car is a monster, but topend suffers because of the dip in power after peak! Match the LS3 at 530hp and topend will be much faster then my olds, and will start to play catch up in the top half of the track, but it will NEVER 60ft or 1/8th mile the same!
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Your example would hold a lot more water if we were comparing a car similar to your olds. The car in question has shorter gearing (MUCH!), less weight (450 lbs), the same power, a higher redline, way more traction, and it will launch at 5k if the driver knows what he is doing. The only powerband that matters at all will be between 5k and 7k. With a turbo big enough to put down those numbers, peak hp will be at the very least 6,500rpm. I know what you're saying and it's true enough in many situations, but a 370whp sti, no matter how it makes it, is going to trap at least in the mid teens and run at LEAST high 11s.
I don't spend a lot of time at the drags (anymore), but I do a lot of road racing and I tune a hell of a lot of subarus and I can tell you without a doubt in my mind that if you put me or any competent driver behind the wheel of a 370whp sti of ANY KIND, any turbo, any combo available, it would turn 11's at the very least 115-116. Those are lowball numbers.
For reference, stock STi's put down only 240-250awhp and the same in torque, but turn mid-low 13s @103-104 with a good driver. What do you think that car is capable of with 120+ more hp on tap and, with the bigger turbo, an even more usable power curve?