does anyone know a good formula to use for horsepower to top speed? i tried online calculators but they force me to have the old horsepower and old top speed which i dunno cause i havent bought my vw bus yet.

edit: i need to know cause im putting a diff engine in it to make it more highway accesible and need to know what size to get
Gibson Grand Concert Acoustic
roland AC90

I mean this one time I was jacking it pertty hard and was making noises and what not

You, my friend, are a genius!
Car Thread

And lots of other factors go into it, such as transmission, aerodynamics, tires, etc. as well as the road surface. Prolly need to use a dyno or something.
I'm rgrockr and I do not approve of this message.