RustyRatRod said

The difference between gross and net is easy to see. Look at specs for 71 engines, then for 72. That's when the change was made.

Click to expand...

Frankie said

There's one more aspect to all of this, It isn't HP, gross, net, or otherwise that moves the car, it's torque (or "grunt) that move you down the road. HP ratings are more a measure of efficiency, while torque is the true measurement of power.

Click to expand...