Traction Control Needed...

7milesout said
It just occured to me. 3 things.

I need data. For all I know it may be running a 13.80 as is (I doubt it). But I'm not certain about it. So before I go through any more trouble, and possibly buying tires I may not need, I'm going to take it back to the strip and see where it is.

The Dodge Demon requires a burnout to optimize the tires for a launch. So ... I need to go back to my line-lock thinking. Maybe with reasonable tires (215/60-14s), and a burnout (not on the current tires, new tires only) maybe it will hook up just enough to hit 13.99. That would be all I want ... for now. New dragstrip E.T. data will let me know. If I'm but a couple tenths off, maybe a burnout would be a benefit.

It shifts to 2nd too quickly. I started reading a thread where the 727 could be adjusted to change its shift points. If anyone can link me to that info, that would be great. Ideally I would like it to shift to 2nd at 5,000 rpm (at full throttle).7milesout

I hit 12.9@106 on 245/60-14s . This was with my 367 Eddie-headed beast with a Hughes [email protected] cam,and 3.55s, so not a lot of power there. Just enough to spin a long long part of the way. I did no back-up run in case it was a fluke. I trapped in third at way past optimum rpm with an A833. I was only looking for 100mph, And I knew the engine was good for 7200, and I wasn't gonna "waste" a shift for the little ways I had to go. That shift, and rpm drop, wouldda probably put me in the 13s so, I think, think, she done good.

But, I never again would run 245s, without some serious traction aides. I mean that's a really,really,really small patch of rubber, to do all that work,just by itself,lol.
If you're going with street-tires,you need the tallest 15s you can fit in there, and never mind what it looks like or if it matches or not.Then work on the 2.2 or worse 60ft. If you can't trap at the top of third gear, you will not get the ET that matches your trap speed. That did not matter to me, I was just there for the MPH and track weight, so I could back-calculate the horsepower. Once you have that, then getting the matching ET is just a matter of spending the money and the time.
For instance, 106 at 3650 (my track-weight that day),calculates to 338hp.
But the 12.9 ET calculates to just 303hp.
My ET for the 338hp shoulda been 12.3.
So my suspension and tires cost me 0.6seconds, and guess what, most of it was right at the start line. I no longer remember the 60ft that day, but I'll just bet it was more than 2.2. Proper chassis weight might have brought that down to 1.9 or maybe 1.8. So right there we found .3 of a second. Then the way-off rpm at the trap killed the top end, so I'd have to guess the rest was there.
So I was content to know the potential of the car was low 12s. I wasn't about to spend many thousands of dollars chasing it.
I guess racing just ain't in my blood.

In any case; may the force be with you!

Ps,
the power to go 13.9 with a superstock chassis at 3300pounds is just 224 hp. With a street chassis costing you say .6 second, you will need 261 hp. The stock 8/1 360 is gonna need to be on top of it's game.