67mustang302

A stripped down 65 with an I6 weighs 2,600lbs. Most people's classics are somewhere between 3,000 and 3,500. Which is still pretty light for a steel construction car. Once you start adding in beefier transmissions, beefier suspension, chassis reinforcement, electronics....it all starts to add up. It's quite easy to add an extra 300lbs give/take without realizing it.

dragman72

Gearing is a big deal too. I have seen an almost stock 2000 gt with only cat backs and k&n drop in 4:56 gears vs his 3:23 originals and go from 14.50's @ 99mph too 13.6 @ 103mph. Can't just judge car by the ET time.

67mustang302

Weight and mph give the best indication of power.

dodgestang

My car is not a race car plus it has an all iron block and head 351c in it as well as heavy 17 inch rims....I always use 3,000 as the weight for the car.