It seems every car I've owned and raced over the years likes different psi in the drag radials or slicks. My '03 Mach 1 on the same exact BFG d/r's worked best with something closer to 20 psi. My '68 Pontiac GTO liked 10-12 psi, but that was with true slicks. I raced a '95 Dodge Dakota for a couple years that liked less than 20 psi (super lightweight in the rear) on d/r's. So, everytime I buy a new toy, it seems I spend a few days at the track dialing in the right psi for a consistent launch.

 

Could have somthing to do with the altitude in different areas of the country

 

As I have raced for 25 years at the same track, that doesn't explain my situation. However, you could be on to something, as weather (density altitude) could affect things on different race days even at the same track.

 

I know the tire pressure at Tulsa depends alot on the weather. We get the whole spectrum here. Late fall is the best time for racing and the pressure seems to change a bit between the spring summer and fall. When it's real hot and muggy a bit more pressure seems to work well. When it's cooler less pressure seems to do the trick.

 

Turned this at FAMOSO last month. New best of a 10.770 @ 125.82 with a 6.84 1/8th mile and a 1.490 60' time. Here is the video, its the second pass: http://videos.streetfire.net/video/c...ea0023600d.htm

 

Sweet run Paul! Love the sound of that Whipple.

 

New guy here. I dont know if this is the place for introductions but Gene K it is.

No Scanner but I will ad them later: Slips have been added.

Showroom Stock:
1/8 mi: 1.958 5.664 8.716 @ 80.72 DA +1285'
1/4 mi: 2.031 5.730 8.743 @ 81.92 13.495 @ 103.31 (On Limiter) DA -1253'

JLTII CAI + BamaChips SCT 93 Oct Race Tune
DA -658'
60' 2.017
330' 5.489
1/8 mi 8.382 @ 85.11
1/4 mi 12.973 @ 107.09

Heres the slips for the 1/4 mi's.

1. AID - Showroom Stock
2. MMP - CAI/Tune Only (Still Stock Pirellis)

 

Gene, great times man! Especially the stock time. Beats my best of 13.55. Did you do this on the stock radials? Oh and Welcome to TMS!

 

Yes 100% stock excepting tire pressures (28 psi rear and 51 psi front).
17" factory Pirellis.

Only changes for the 12.9 run were the JLTII CAI and BamaChips Mailorder SCT 93 Race Tune.
Still on stock Pirellis

Slips Added to Original Post.

 

Thanks Guys.....

Here is the Video of the 12.83 @ 106.66 run with the following Mods
JLT II CAI, UDP, CMDP, Spyder DS, 4.10 Gears, MAC Axle Back, CHE LCA and BFG Drag Radials on Stock rims Stock Automatic tranny

 

I'll have to scan the timeslips when I get home. For now though......

'07 Mustang GT; dead stock except for the Team Performance Products "Heritage Twin Turbo System".

11.75 @ 123.58 mph

 

Here are the incrementals.

60'..............2.134
330'............5.274
660'............7.768 @ 98.36 mph
1000'...........9.928
1320'...........11.753 @ 123.58 mph

 

Just want to post a copy of the timeslip from a BONE STOCK run - 5/14/07

13.692 @ 104.32

 

Pretty sweet Cartman.

U.S. 1 it looks like you have some more in her looking at the 60'

 

There's quite a bit more in the car. We'll see what happens with the latest round of upgrades when April rolls around.

 

Hit Speedworld a few weeks ago and managed to put down a 13.58 @ 104.00

2.14sec 60' time :-/

 

I can't get out of the 14's, well I did one time with a 13.9. I can't figure it out. I have 5sp manual tranny,JLT II CAI, 91 performance tune, offroad prochamber, stock wheels and tires 45psi in the front, tried 25psi in the rear still spun like crazy tried 20psi no difference. Low to mid 14's at 101mph is the best I can muster. I've tried leaving at 2500rpm's of course spun the tires, tried from idle spun the tires, speed shifting into 2nd spins them like crazy so I have to granny shift. What is everyone else doing to have a stock 13sec car?

 

Rakkassan34-

What are your 60ft times? 2500rpm is probably too soft. I usually hold it around 3500rpm and ride the clutch out of the hole for the first 60ft with very little wheel spin. Don't try and bog it like with a 5.0L - these cars are a little soft on torque at the bottom end and a lot heavier. I shift mine at 6500-6700rpm with the rev limiter bumped from my tune.

Another thin to consider is elevation (where are you racing? What state?) and weather. My car ran .30 of a second faster in cool October air than it did the heat of June.

You should be able to hit low 13's with your mods. My best is a 13.43, spinning through 2nd gear with just a tune and a JLT II. That's with 3.31's and 18" rims. You just need to practice getting out of gate I think.

 

my 60ft times are 2.3-2.4 avg. I shift around 6000rpms. Don't know the elevation here at louisiana. We're probably at sea level beings the slightest rain floods this place

 

I attended the GOOTC (Get out of the Cold) event by Bad Mustang Club at Maryland International Raceway..
I ran My Best time today on a Stock Tranny all motor

60' - 1.845
330 - 5.158
1/8 - 7.936
MPH - 87.91
1000 - 10.357
1/4 - 12.415
MPH - 109.35
I am Car S197 (5197)



4.6L 281 V8 3V Mod Motor.....
JLT II CAI 93 Tune (BamaChips)
Spyder Aluminum DS
Steeda UDP
Steeda CMDP
FRPP 4.10 Gears
CHE Lower Control Arms
JBA LT headers
JBA catted H-Pipe
MAC Axle Back Mufflers

Stock 5R55S Automatic Tranny.
BFG 275/40 17 Drag Radials mounted on Stock GT Rims
3575 Race weight w/ Driver