HD Truck 0-60 Times

6.6 Oilburner wrote:

4x4ord wrote:

wilber1 wrote:

4x4ord wrote:

wilber1 wrote:

transamz9 wrote:
The fact of the matter is that if you mash any of the HD trucks to wide open throttle then you will be the fastest one off the line unless someone is racing you.

Good point but torque management muddies the waters. The higher HP truck should be faster. Problem with these trucks with massive torque though is you can't use it off the line without tearing up the tires or breaking parts. Even with traction control, there is only so much power you can put to the ground

An Audi Q5 TDI with 240 HP 420 lb ft is faster 0-30 than an SQ5 with 354 HP 347 lb ft. same transmission. After that, the SQ5 is long gone.

if I put my f350 in 4wd it doesn't even come close to slipping the tires on dry pavement. If the truck is loaded with 3500 lbs in the bed I'm quite sure it wouldn't slip the tires in 2wd either. I'm certainly not afraid of breaking parts.....why would they design a power train capable of putting 20,000 ft lbs of torque to a rear axle that can only handle 19,000 ftlbs? Or couple an engine capable of 900 ftlbs to a transmission that can only handle 800?

0-60 runs on dry pavement in 4wd. That's really useful. Your F350 doesn't have any kind of torque management or traction control?

If for some reason I was wanting to floor it off the line I would engage the 4wd. Traction control can be shut off but in 4wd it wouldn't be required to shut it off. As far as I know, torque management has to do with the computer backing the fuel off a little while the transmission makes it shift.

Torque management is not just defuel on shift, it often times will not give you what you command with the pedal. If you mash it to the floor, it will feed the power in a linear fashion that will be much easier on your drivetrain than flipping a 300hp light switch. This is why a Tune on a gas truck which will only gain 10-15 horse feels like a night and day difference.

As far as zero to 60s......GM kicked off a horsepower war in 2001. Why wouldn't guys be excited about 0-60 times? That is part of what the market has become. Stock for Stock I'm not surprised the GMs are faster. Biggest stock turbo, best shifting trans, highest flowing heads.

As far as Racetruck/Tow Rig. My old 2007.5 Chevy with a Compound turbo set up, bigger injectors was the best of both. Hauled 15k effortlessly, and would surprise the hell out of the average street car.

I'm trying to understand this torque management thing. I can see the logic behind reducing fuel (torque) during shift points but I don't understand your "feeding the power in a linear fashion" statement. Are you saying if I floor my truck the computer knows better and increases the fuel delivery over a programed period of time? What is that period of time? A quarter second? 2 seconds? Seems odd to me that on the one hand engineers are trying to reduce turbo lag so they can program in "torque management lag"?