The much faster and super consistent Pro Stock guys can hook the power with the latest race chassis development without needing to transfer all the weight with a wheelie like a stock chassis and suspension 40 year old Chevelle needs to.
John is correct here^...Pro Stock should NOT even enter into this conversation. The Pro Stock cars are a whole different animal all together. There's no comparison between 10 second Stock Eliminator cars and Pro Stock. Everyone knows that there's nothing "Stock" about the Pro Stock cars. NOT even close. :noway:
Furthermore, I believe we would do well to keep in mind just how much more power the Pro Stock cars are making in light of what drag car chassis expert Dave Morgan teaches: "Thirty three percent of the hit on the rear tires (the downforce) on a drag car at the starting launch comes from weight transfer from the front to the rear, BUT sixty six percent of the hit comes from axle torque." This is precisely why the cars with much higher power levels like the Pro Stock cars have, do not need an instant center that is even nearly as short as a car in the 600-800 HP range does. If you were to use an I.C. as short as what is needed for a 9 or a 10 second car on a 5, 6, or 7 second car, it would not even hook up off the line at all because the hit on the rear tires (the downforce on them) would be so hard and abrupt that the rear suspension would rebound way too quick and too hard back up into the car, which would result ina wheel spin smoke show.
The point being is that with the tremendous amount of axle torque from a Pro Stock car engine being so overwhelmingly greater than that of a car with the power level of a Stock Eliminator car, that the Pro Stock cars do not need to rely nearly as much on weight transfer to obtain enough downforce on the rear tires to keep them planted on the track as the Stock Eliminator cars do, or any drag car at a similar power level as the Stock Eliminator cars are at.
Let me add that the reason that I bring up Dave Morgan and his theories in this discussion is that the guy is an expert on drag car suspension and chassis set-up.Not only has he written the book "Door Slammers: The Chassis Book", but he has been paid in a number of different countries including the USA to speak at seminars for drag racers, and he holds workshops for racers which includes him meeting with them at the track to watch their cars run and give them tips and advice on suspension tuning.
I've been at one of his seminars, and watched racers describe to him what their cars have in detail, and I've heard Dave stand there and tell them exactly what their car is doing at the starting line as well as at the big end of the track after hearing their description, and without even ever seeing their car run nor having viewed any of their timeslips either. And the racers look at him with amazement and nod their head and say.."Yes, that's exactly correct!".