Ok, thinking back I thought I knew the difference between what was termed "Gross HP" and "Net HP". I seemd to remember that it depended on the car company and engineers doing the testing but it was generally accepted that in 1972 companies should use "NET".

I did some research and found the following site that explains it pretty well. I'm posting this not for the freak who constantly trolls here but so everybody understand these terms. I know it's OT but I found it interesting and refreshing the memory cells is good once in awhile.

http://www-unix.oit.umass.edu/~tcroy...horsepower.htm
and
http://automobile.sae.org/

 

Read it...