i know they are notoriously crappy, but this one seems to be fairly close when the MAX, ACCURATE dyno numbers are used with MAX, BEST E.T.

This HP calc assumes that you use ALL of your HP ... no traction loss...

Try it out and tell me what you think... Some of them are off the friggin map...

the only issue is accurate weight. I assume that 4500-4700 is what the average L guy would use unless they are "full trim" trucks and "full trim" figures.

http://www.fordmuscle.com/calculator/horsepower.shtml

 

ET is a poor measure of HP. Trap speed, however, is a great, reliable measure of HP -- in fact, trap speed was rated by Hot Rod magazine as the BEST measure out there. Yes, even better than a dyno.

Read all about it here.