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MotorGround >> How would a NASCAR do in 1/4 mi?


4/25/07 9:51 PM
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stevekt
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Edited: 25-Apr-07
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What sort of times would a regulation NASCAR get on a 1/4 mile drag strip? Oh, what about a monster truck?
4/26/07 12:37 AM
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Jonwell
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Edited: 26-Apr-07
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Well, they run about 750hp and 3000lbs, which mathematically gives you a trap speed of about 140mph. With a well set up drag car that'll net you 9.5 seconds or so. Stock cars of course are not set up to run 1/4 mile, so they would do it a bit slower, but I'd imagine you could run one in the 10s with proper gearing and good driving. Monster trucks make a lot more power (2x as much? Not sure) but weigh about 10,000 pounds. Assuming 1500 hp, 1/4 mile trap about would be about 114 mph, which is what my daily-driver Camaro ran. These are all estimations of course, there are too many variables involved to give a precise answer. Different equations or calculators will give you different answers.
4/26/07 12:45 AM
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Jonwell
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Edited: 26-Apr-07 12:54 AM
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The equation I used btw is horsepower = weight * (velocity/234)^3, or with some manipulation, 234*cube root of (hp/weight)= velocity.
4/26/07 9:35 AM
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elmo
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Edited: 26-Apr-07 09:44 AM
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Or you can just plug some numbers in the trap speed calculator here:  http://thedieselgarage.com/projects/tirecalc/tirecalc.htm

It's been pretty accurate as long as you have an accurate weight; within about 20rwhp of actual dynos usually.

4/26/07 9:40 AM
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elmo
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Edited: 26-Apr-07
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It says a monster truck weighing 10,000lbs with about 1490rwhp would trap about 130mph.  FWIW I think a monster truck weighs closer to about 17,000-20,000lbs.  For reference, my F250 crewcab 4x4 with a 6" lift weighs 8225lbs when it's stripped down a little for racing.
4/26/07 12:36 PM
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Ponyboy
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Edited: 26-Apr-07
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I'm sure those truck suspension arms don't allow it to launch. You would have to un-do whatever they do to get handling in order to get a good launch.
4/28/07 2:06 AM
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CaptainXanax
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Edited: 28-Apr-07 02:12 AM
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Something about the idea of driving an enormous truck with 1500 hp, dirt tires, and 4-wheel steering down a 1/4 mile gives me a boner. All I know is someone or something is getting smashed. lol As for the Nascar quesion, I have a video of a C5 Trans-Am car running in the 1/4. The thing has 2 speeds, off and balls out. It goes mid 13's @ 125 spinning past 1/2 track. It reminds me of 90% of the Supras you see at the track.

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