Not sure if this has been discused yet, but it says on the page before this that the 5.7 is 390hp, but ive heard the 5.7 is rated at 345+ hp, what is the true hp to the wheels on a stock hemi 5.7 single cab
it does not matter whether is it single cab or quad cab...the 5.7L hemi engine from 2006-2008 puts out 345hp(300whp approximately), and the 09 puts out 390(345whp approximately)...
cool sounds good, all mods complete i want to be around 500. i rode with my buddy at work and he has a lightning with 500whp and i almost shit myself, THATS the feeling i want to give people riding in my truck.
One also good point is that lighting i bet is about 1000 lbs lighter than our rams. Mine comes in at 6700 lbs for the 4x4 QC. For a half ton that's ALOT! Not to high jack this forum or anything but is their reason behind so much weight?
the '09 comes in around 290-295whp stock. Check out the dyno chart from DiabloSport's testing their 87 tune against the stock tune (just the lower line instead of the higher one from the DS tune)
Theres a difference between hp and whp, if your truck is rated at a certain hp say 345, 345hp is what its rated at the crank, basically how powerfull your motor is, Now whp is how much hp your truck has after it gets to the wheels (WHEEL HORSE POWER) Sense you loose power through your drive train they have a rating for this as well, if you have 345 at the crank (HP) then your looking at about 290 at the wheels (WHP) correct me if im wrong senior members.
Horsepower isn't just some number. It's just a little more difficult to explain than torque is. The fact that there are several units of measurement that can all be referred to as "horsepower" also makes things a little more confusing. http://en.wikipedia.org/wiki/Horsepower
Horsepower is a measurement of power. Power is work over time. Work is a force times a distance.
Hook your truck up to a house, and floor it (we'll pretend for this example that your tires are awesome and don't spin at all- just put everything your engine puts out to the ground). You won't go anywhere, but you will generate plenty of torque. Since you haven't gone anywhere, you will have generated 0 horsepower though since you need to travel some distance in order to have done any work, and if you haven't done any work, you haven't generated any power.