JohnAndDar:

Pics (but not very good ones):

https://www.f150online.com/galleries...y.cfm?gnum=3264

Not sure why this thread was place in General Discussion so I sent you the link via mail just in case you can are not surfing out of the 04 threads.

Screwdrive

 

Mmm, yet an abrams can still get up to 60+ MPH which is pretty fast for a 65 ton tank. Just cause its heavy doesnt mean it cant be fast...

31C

 

i have a supercrew 5.4 with a vortech s/c , last ran a 15.1 @89.8.

my brother has a new 4 door 1500 hemi, i can beat him by 1/2 a car lenght up to 70. i can pull a stock supercrew from start to finish and by a good 6 ot 7 car lenght to 70. i have no ego to pump or a reason to lie, actually i was a little pi$$ed when at 70 he was still there.

 

Brotherdave, your ET looks great, however you MPH seems low. I bet if you try different methods you could get better numbers.

Horsepower is a useless term. With most street vehicles, especially a heavy truck torque is what provides the quickness not HP.
I have a SCab 4.6 3:08's, few mods, 4670lbs, I have taken a few Chevy 2500's with the 6.0 and 4:11's out of the hole. NO question they will get me on the top end, but the fact is I can make more torque on the bottom, even with my little 4.6.
Everything is a tradeoff, high HP usally means you have given up bottom end. Turn more RPM and the HP numbers rise. Its only a mathimatical calculation. Torque X RPM X 5250.

My stang has 380hp, peak torque occurs at 2200, and runs a flat line to 5600. I have an AOD with 3:55's. I raced a 4 valve 4.6 Cobra with 14 psi intercooled Procharger , 5 speed and 3:73's. The Cobra clearly has a 150 hp advantage,(similar weight) however we run identical ET's of 12.55, me @107 and him @124. As many races here know HP is indicated by more MPH than ET.

And why is it that Diesels run low HP numbers?! well they only turn 2200 RPM, but they make 100's-1000's LBFT of torque. One of the Pumpers at work has a 230HP Cummins Diesel, lets say I bolt in my 380 HP Mustang engine, will it be faster???, Hell no, it doesn't have the twisting force required to move it. Thats an extreme case, but bottom line is don't be intimidated by HP numbers alone. Alot of variables come into play, torque multiplication of the transmissions, gears, weight.

 

i think we talked about this before?

my truck has 3.55 gears and a 285/60/18 tire. the sixty foot is in the 2.2 range. when i made that run i didnt have a chip, so it had denotation bad starting at 4700 rpm.
the hemi has a 5 speed automatic with 3.90 gears, he actually pulls me out of the hole by a 1/4 truck length everytime. 12.55 @ 107, i beat you have a higher stall than stock?
i think my truck would greatly benefit from 4.10's, an exhaust and a the sct software. just dont know if i care about going any faster with this truck or putting the money towards something that would really go and weight under 4000 lbs.

 

Actually my converter is only a 2200 stall, stock is 1800. 60' time is 1.76 at the track. I looked at peak torque curves with the Bell blower and set it to come on right on top,as the bell is full boost at 1800 as well. That makes a HUGE difference. The converter is also a full 12". So it provides alot on low end grunt, sure it kills a little power on top, but more than makes up for it!
With you truck, I think you should have at least 10 more MPH. I Have you gotten the truck dialed in? I'd love to see how it runs.
I haven't had a chance to play with a HEMI yet, I have played around with a Dakota R/T, eat his lunch as well out of the hole, then he goes right on by.
I would think with those tires it would be like taking away gear, 4:11's may be exactly what you need. A shift at 4700 really killed it for you, and dropped you in way before it was ready to recover. 5500 shift will give you the best results as it drops you back on peak HP and can pull .