Originally Posted by rcbs204
No dude, neither.
Regardless of the full load in you truck as you say, just because you have less fuel in your truck does not magically give you more horse power. This is a placebo effect.
while it doesnt give you more horsepower, it makes the horse power you have more efficient. its easier to move around 3840 vs 3940 (just a #).
The 100lbs works out to be somewhere around 1hp. those guys in racing forums are always looking to shave weight by removing things like the passengers seats and carpeting. a general rule is if you can get 100lbs lighter you will gain around 1hp. some say it will gain .1 in a quarter but im not sold on that one.
does that mean if he has 1hp more it will "seem" faster? prolly not. im leaning more towards a feeling of the truck's body roll and the lack of fluid moving thru the tank.
with a full tank the truck may sway and slosh a little more. if youre running around with a six pack in the tank, its not going to wave back and forth inside the tank like some sort of wave ride at the theme park. i think that would give the "feeling" of beign lighter and quicker. a full tank would be a heavier and fuller feeling. think of a full stomach after a thanksgiving meal and a long day with out much to eat at all. you will feel lighter and it will seem easier to get your fat ass going. jmo