Guest Anonymous Posted September 20, 2000 Share Posted September 20, 2000 Just wondering on how much torque/Hp it would take to place my 240 at a 10 sec quarter run. thanks zach P.S. just dreaming on the future of my z Quote Link to comment Share on other sites More sharing options...
MYRON Posted September 21, 2000 Share Posted September 21, 2000 You have alot of things that you need to factor in before you get that torque/hp #.. Weight/traction are two that come to mind. I hear that every 100lbs is worth a 1/10th sec. in the qtr. mile... I have not run my car in the 1/4 but based on 0-60 and 8th mile times I am in the 11's My car is not the lightest Z on the planet because of the V8, heavy cowl hood, heavy corbeau targa rs seats,and roll bar... I am guessing it is around 2800 lbs and i weigh 180... My motor is aprox. 475hp 430lbs tq.... Quote Link to comment Share on other sites More sharing options...
Scottie-GNZ Posted September 21, 2000 Share Posted September 21, 2000 Zach, here is a formula you can use to project HP based on ET, MPH and weight. Couple of things you need to know: - The resulting HP number might seem low and that is because it projects HP at the wheels not the flywheel like most crate motors. - You must be able to predict a fairly accurate MPH as that is the most important factor in computing HP. Remember, MPH is the true indicator of HP - You also need to have an accurate weight for the car, including the driver. (((MPH x MPH)/ET) * (weight with driver/1000)) / 9.1 E.g., you have a Z that weighs 2650lbs with the driver and you want to run 10.90 @ 122mph: (((122x122)/10.9)*2.65)/9.1 = 397.6hp at the wheels. If you apply the 80% rule, that is 497hp at the flywheel. Dream on. ------------------ Scottie 71 240GN-Z http://www.mindspring.com/~vscott911/gnz.html Quote Link to comment Share on other sites More sharing options...
John Scott Posted September 21, 2000 Share Posted September 21, 2000 Don't you love Scottie's math?? Amazing how helpful a few formulas can be. Also how humbling some times. JS Quote Link to comment Share on other sites More sharing options...
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