Quarter Mile or Eighth Mile Times?

5063 Views 15 Replies 6 Participants Last post by Armada, Jul 9, 2005

Armada

Discussion Starter · Mar 1, 2005

Has anyone taken their Armada to the dragstrip yet? I see that our moderator has posted some number for his Titan, but don't see anything for our trucks yet. I'd be curious to see how our trucks are doing under the harsh real light of the official timers at the strip.

I took my SE Offroad 4x4 to Gulfport Dragway back in the summer. It was really not broken in but ran consistent 15.4's in three runs in 90 degree temperature. Only difference from the present setup is that I also have a K&N AirCharger and had it attached that day rather than the drop in. You can swap them in about 15-20 minutes once the AirCharger kit is put together. Pretty good for how big and heavy it is. I did not keep the slips, so I intend to return in a few weeks, run it again and try to scan and post the results.

I do have an accelerometer. A G-Tech Pro Comp. It is not as good as timers at the strip, but if you set it up properly, especially calibrating the tachometer and dialing in the weight properly, it is pretty accurate and repeatable. It was showing the same times within a tenth as the strip runs, but a couple mph higher trap speeds. There are technical reasons for that.

It also shows hp and torque curves, which for me are ranging from about 247-253 horses at the rear wheels and about 315-320 pounds of torque at the rear wheels. Recognizing that this is at the wheel and not the crankshaft, I think those are pretty good numbers for a truck that is bascially stock except for the airbox mod and the drop-in air filter.

Now that the weather is cooler, the quarter mile times by the accelerometer have fallen to 15.1's. Denser air and a fully broken in engine will do that.

I have no frame of reference as to how these numbers stack up to other Armadas and whether exhaust or more serious intake mods will help.

I know that running a behemoth SUV on the strip may not make sense, and I don't intent to try to turn the truck into a bracket racer or something! But objective data is useful in seeing what our trucks do and what mods work and which ones do not.

Anyone have any results they would like to share?

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scr38

· #11 · Jun 27, 2005

Armada said:
Did you go? Do you have numbers? It's hot here now in Mississippi, mid '90's and those 14.8's and 14.9's quarter times with 6.8 60 mph times by G-Tech back in early April have now risen to 15.2's and 7.1. High humidity and 95 degree temps hurt. This is about 30-35 degrees warmer than the runs I made back in the early spring.

If you get into the 14's in these conditions, you are doing something.

Armada, I just got a G-Tech Pro SS unit and have made a couple of test runs. Temps are in the mid 90's here, high humidity. I am getting 15.4, 90 MPH. 0-60 7.08, 1/8 mile is 9.99 at 72 MPH. Max G is .6.
What weight did you use, and what pitch factor did you use?

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scr38

· #13 · Jun 27, 2005

The Pitch factor corrects for the change in the level of the vehicle when the front raises under acceleration. On the SS model you select the factor depending on how soft or stiff the supension is.
The rollout on the SS is set at 12 inches.
There are several things your Competition model will do that my SS won't. I think I will send my unit in and have it upgraded to the RR model.
The only units G-Tech currently sells are the SS and the RR.
Thanks for the info.

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