Yup, you heard right. I finally got the ole 98 NPI slushbox GT into the 12s, and well into the 12s at that. I knew it had these times in it, it was just gonna have to wait till some good weather. Good weather came, and I capitalized on the opportunity. Seeing what it'll do in this trim, I now believe I could get it to the low 12s with gears, a stall, and a slightly lower DA. But I keep telling myself that those things are not going to happen.
Track: Rockingham Dragway
DA: 400 feet
12.65 @ 108.15 mph with a 1.84 60' (right lane)
And to back it up
12.66 @ 107.88 mph with a 1.83 60' (right lane)
I had no wheel spin on any of my passes minus 2, and those times aren't in this thread. (They were both 12.8s anyway.
)I got a better trap speed a few passes later. I remembered that I pulled some timing and richened it up a little bit after it pinged at the top of 2nd gear last time I went to the 1/4. So I added that timing back and leaned it back out. Unfortunately, this was later in the day, and the track wasn't hooking anywhere near as good as it was earlier when I made the 12.6 passes. And the DA was about 250 feet more than earlier. No wheel spin, I just launched it softer because I had spun the previously couple of passes. It still definitely has some left in it.
12.75 @ 108.41 mph with a 1.91 60'. (right lane) Check out that RT.
Video of that run:
YouTube - 1998 Mustang GT vs. 2001 Mustang Bullitt
These runs were done with some basic, easy weight reduction. When I got to the track, I took out: (all of this was weighed by me personally earlier this week)
Spare tire and jack: 31 pounds
Subwoofers: 36 pounds
Passenger seat: 35 pounds
Rear seat bottom: 13 pounds
Bag of tools: 18 pounds
Floor mats: 12 pounds
Rear spoiler: 8 pounds
For a total of: 153 pounds!
It sounds like a lot of taking out, but it only took me 10 minutes to get it all out, and 15 to put it all back in. And boy did it make a difference, as shown by the times above.
As the day was ending, I figured I'd see what it would do with all of that back in. So, in FULL street trim (minus the DRs) on the only pass in this trim, it went:
12.85 @ 107.21 mph with a 1.90 60'
I actually went to the track last night as well with some nice cool air (-750 feet DA), but after I got there, they decided to close 2 hours early, which only allowed me to get 2 passes in.
They did let me in half price, so it wasn't all bad. So with no time to let air out of the tires or get the feel of the cold track, and with all the said stuff above still in the car (I didn't have time to take it out), I went:13.00 @ 106.45 mph with a 1.96 60'
Video of that run: YouTube - Supercharged 1998 Mustang GT Listen to that J-mod do work!
(I know I'm in the left lane in the video, and the right in the slip. Both runs last night were flip-flopped right-left. Weird).I was so ticked off that I didn't get a 12.99 (and that was the last pass of the night). Looking back at it, I'm glad I didn't because if I would have probably not gone this morning, and thus not run all these sweet times.
I know why the ET was slower (wheel spin), but I'm not entirely sure why I was trapping so much less than I did today considering I had 1000 feet less DA. Oh well, maybe get to run at that kind of DA again later next month.
Hokay, end novel.
I'm only at about 5100-5200 rpm at the end of the 1/4. 3.73s would put me right at 6000 rpm through the traps. I suspect I'd pick up several tenths and at least a couple mph, but I don't really want to trade off that fuel mileage.
I keep saying that I'm not going to, but if I get one of the co-ops I've applied for next semester (>$600/week in my pocket), then I might just do it. 
