Hi All
Depends what you are chasing, the maths stats are a guide or the best expected outcome for a given set of info / input
Sure on the day, runs can vary easily by 2 seconds depending on air temp / heat , tyre pressure, stickyness of the track, engine temperature and most importantly driver reaction time.
A mate of mine has 2 'weekender racers' one does best of 11.2 and the other more of a streeter of 13.0
but the wrong person in the 11.2 car can get it down to 14's
Torque Vs HP , thats a always argue event, but day to day street it torque, there is no real need to rev a engine to high RPM to achieve output, all you do is strain and wear components
Say you take a typical engine does not matter which one 5.0 holden or or 5.7 chev
Now i am not comparing holdev Vs chev , but the same style of engine eg 304 highHP revver Vs 304 torque ( or Gen3 Hi RPM revver Vs Gen 3 torque )
At the drag strip its almost irrelevant, at 1/4 mile or 400 meters, unless you run something like 2.60 gears yuor car will achieve maz RPM and exit speed by 300 meters, very few cars are slow reving or geared to keep acceleration at the 400 meter point, actually some cars you can even back of before the line or switch of the engine the speed you have reached will keep pushing you
Its like doing 80kph and taking your foot of the accelerator the car will still go 80-80-80-79-79-79-78 etc it wont back off fast like say when you are in first gear and take your foot of the accelerator and the car revs down and slows down , this is the combination of say your first gear ration * your final drive , for example 1st = 3.5 * diff of even a 3.08 = 10.78 , this is why the revs drop of much faster
Back to torque vs HP , 2 identical motors, one is say 400HP at 7000 the other is 400HP at 5000 , which one will last the longest , the one that lives at lower revs, in a perfect world it has less revs so less wear and tear , plus the engine has less chance of becoming a grenade at lower revs.
The dyno and dyno 2000 are great programs, i loved spending time on them going through cam catalogs and running simulations, beats buying say 4 or 5 cams and outing them together to see what happens.
regards
george
