B Stead

Or make that the Weight-to-Power Ratio.

Now the Weight-to-Power Ratio might seem like a simple and obvious subject but often the car with the most horsepower wins the marketing competition.

So,

3400 pounds / 450 horsepower = 7.56 pounds-per-horsepower.

Then increase the horsepower by 10% and

3400 pounds / 495 horsepower = 6.87 pounds-per-horsepower.

Now, decease the vehicle weight by 9.09% and hold the horsepower at 450 for

3090.9 pounds / 450 horsepower = 6.87 pounds-per-horsepower.


Of course chassis strength is important and that's why the Corvette is built with extruded rectangular tubes and why the Lotus Evora is built with extruded rectangular tubes.


Anything else to consider ? Yeah, part of the very good acceleration of Ferrari's and Lamborghini's comes from fast revving engines. It's not solely the Weight-to-Power Ratio that makes fast acceleration
.

FourFather

1350 pounds divided by 365 Horsepower= 3.69 pounds per horsepower





Big fun!!

Eddie

TurboTnZ06

My pump gas on meth V6 driver: 650 rwhp based on 3635 race weight at 130.8 mph in the 1/4. Using .825 for flywheel calculations, 787 flywheel hp.

Now, the car actually weighs less today, minus driver, less minimum weight I have to add to trunk to meet class rules, and some other mods I've done since, ~3250, most likely less than 3200, but I'm guessing and will know this winter the real weight.

3250 / 787 = 4.13 lbs per hp.