If your race is for acceleration,,, take the tail off, and loose your spare, jack,tools, 1/4 tank of fuel, tire pressure max. on front, get the front up.
If your racing for speed, tail up. The air pressure will build up inside and in front of the tail. Air over the cab will not drop down so far and will ride across the air in the bed. There was a wind tunnel test on this. The air doesn't have to change directions so dramatically. I have not tested this. (in case any police are watching):happy:
I like your thinking. :great: Every one should visit the info above. Thank you Sooner !!!In addition to Mythbusters killing the tailgate down theory (I love Mythbusters), the National Research Council Canada (NRCC) showed that leaving the tailgate down or removed made wind resistance worse (5%) on trucks with the short beds and made little to no difference on trucks with long beds. So, leave the tailgate up and convince your buddy he needs to drop his. Maybe that's the advantage you need. LOL