Does this seem slow to you? - MustangForums.com


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Old 05-04-2013, 11:10 AM   #1
mtflyboy25
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Default Does this seem slow to you?

Well I took her out to the track last night... Southwestern International Raceway in Tucson, AZ. It was a great night for a Test n Tune. I got 16 runs in which is amazing. Even if I was there from 5PM to 11:30PM.

Here is my best slip.. I think I should be fast but I just couldnt get any better at all. I started in the 16s and brought her down to a consistent mid 15.

What do you guys think? Is there something wrong with it?

Density Altitude: 4564 feet
Relative Density: 87.31 %

1988 Ford Mustang GT Hatchback
Car weighs 3538 with my big butt in it.

MODS
GT40 block
E7TE Cylinder Heads
GT40 Stainless Steel swirl polished valves
Intake 1.940
Exhaust. 1.540 dual springs
E303 Camshaft
Ford Racing Crank Balancer
Ford Racing 50oz SFI Crankshaft Damper
Ford Racing High Volume Water Pump
24 lb. Injectors
GT40 Upper Intake
GT40 Lower Intake
Pro Mass Air
BBK Cold Air Intake
MSD 6AI Ignition Coil
Single Electric Fan
3 core radiator
BBK Shorty Headers
BBK Off-road H Pipe
Ford Racing 8mm Spark Plug Wires
Adjustable Fuel Pressure Regulator
BBK Underdrive Pullies
65mm Throttle Body
65mm EGR Spacer
Kenny Brown Double Cross Subframe Connectors Welded
Global West Strut Mounts
Global West Rear Control Arms
Poly Sway Bar Bushings
5 lug conversion
16 inch Cobra Wheels
2006 Mustang 2 piston caliper polished Front Brakes
2004 Cobra Diff
3.27 Gears
2004 Cobra 31 Spline Axles
2004 Cobra Rear Drilled Disc Brakes
Aluminum Ford Racing Drive Shaft
3 Point Strut Tower Brace
Wilwood Adjustable Brake Proportioning Valve
1993 Cobra Master Cylinder
1993 Cobra Brake Booster
Eibach Springs
190 lph Fuel Pump
KYB Rear Shocks
Lentech Street Terminator AODE Transmission
9.5 converter
2600 stall
Hayden Transmission Cooler
Chrome Transmission Pan
Poly Transmission Mount
130 Amp Alternator
Optima Red Top Battery

PB Time Slip




Chilling at the track...


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Old 05-04-2013, 11:22 AM   #2
99GTvert
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I think that's on the slower side but that track's elevation is a big part. Your 60 ft time is not good. What tires are you using? For your launch did you stall up to 2600 and leave from there?
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Old 05-04-2013, 11:27 AM   #3
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I think that's on the slower side but that track's elevation is a big part. Your 60 ft time is not good. What tires are you using? For your launch did you stall up to 2600 and leave from there?
Street Tires... 245/50R16s An all season with good tread depth. I kept them at street pressure because I didnt have a pump and I was launching between 2600-3000 with the brake mashed... They were weak launches and it took forever to hit the power band.
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Old 05-04-2013, 12:02 PM   #4
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3.27 gears and the .747 reaction time are killing your 60ft time. Some 3.73 or 4.10 gears would put you into the power a lot faster. With auto trans 4.10 gears would be great for you .
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Old 05-04-2013, 12:04 PM   #5
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Quote:
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3.27 gears and the .747 reaction time are killing your 60ft time. Some 3.73 or 4.10 gears would put you into the power a lot faster. With auto trans 4.10 gears would be great for you .
Well the reaction time has NOTHING to do with my times when I am just doing a Test and Tune. I sit at the light for a long time sometimes to get a good launch. I agree with the gearing though.
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Old 05-04-2013, 12:40 PM   #6
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I thought you would have been in the low 14's/high 13's with that setup. First thing I noticed in that list was the gearing like everyone has said. Has the car been tuned? What's the car weigh? The heads are definitely killing potential.

As a side note, that's a clean looking car.
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Old 05-04-2013, 12:43 PM   #7
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I thought you would have been in the low 14's/high 13's with that setup. First thing I noticed in that list was the gearing like everyone has said. Has the car been tuned? What's the car weigh? The heads are definitely killing potential.

As a side note, that's a clean looking car.
I was hoping for 14s because of the altitude for sure, but not having a hard time doing 15s!

Yes gearing is 3.27 I was told, so that hurts for sure but is fantastic on the highway.

I do not know if the car has been tuned or not. I would assume so.

Car weighs 3538 with my big butt in it.

Yeah, new heads would be nice to help her breathe.

And thank you! I just bought her on Thursday and I am very happy so far.
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Old 05-05-2013, 01:10 AM   #8
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I also race that strip, have for years.
That 4500+ air density isn't helping things at all, niether are those gears and the car wieght.
NHRA used to correct.25 to sea level from Tucson so you would have run a 15.21 or something like that last night.
I would take a long look at all the systems on the car as it seems very pokey to me......
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Old 05-05-2013, 01:48 AM   #9
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I also race that strip, have for years.
That 4500+ air density isn't helping things at all, niether are those gears and the car wieght.
NHRA used to correct.25 to sea level from Tucson so you would have run a 15.21 or something like that last night.
I would take a long look at all the systems on the car as it seems very pokey to me......

I think most of it is the 3.27 gearing and the 2600 stall. I am slow off the line hardcore. But she shifts solid and pulls hard from 3500-6000.
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Old 05-06-2013, 01:05 PM   #10
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I think it should be in the high 13's at the least. When I first got my car it went 14.5@96 with stock heads and cam, 2.73's, crappy street tires and didn't have a good tune up done
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