How much approximate torque would a 2002 f150 supercrew 5.4 have?

 

http://lmgtfy.com/?q=2002+f150+supercrew+5.4+torque

 

350 ft/lbs at the crank from the factory.
~20% loss due to auto transmission = ~ 280 at the rear wheels

 

that's a sweet link

 

delete everything after the .com and you can make your own.

 

I was under the impression that torque was multiplied by the torque converter and horsepower was lost.

 

+50% more for 35's, lol.

 

I think our TC is 2.2 or 2.4 but I know one thing for certain. I do not have 700 ft/lbs of torque pushing my truck.

 

Multiply doesn't necessarily mean double, just more at the tailshaft than the crankshaft.

 

HP is a measurement of torque. HP loss % at rear tire = torque loss % at rear tire.

The formula for HP is:

So regardless of figuring RWHP or Crank HP, you are using the torque value to get it.

While exactly how much torque is lost in the drive train for our truck, I don't know, but most formula's say use 18-22% for an automatic. That puts ours between 273-287 ft/lbs of torque at the rear wheel from the factory.
Only way to know for sure is to dyno it.\

Well, it multiplies the torque from what leaves the crankshaft and goes into the transmission input shaft.
It does make me wonder though what the output at the tailshaft actually is? I am sure there is a formula for that using tire size and rear end ratio.