sonic98gt

Okay, so with the data I could find on the car, here's what I get. Let me know if I'm off on any of the spec. numbers:

2006 FORD SHELBY GT500
----------------------

CAR SPECIFICATIONS

Engine Displacement: 5409 cc.
Engine Location: FRONT
Engine Type: SUPER
Engine Max Horsepower: 475 bhp
@: 6500 rpm
Engine Torque: 450 lb-ft
@: 3750 rpm
Compression Ratio: 8.5 :1
Maximum engine speed: 6500 rpm
Start Engine Speed: 2000 rpm
with Clutch: DUMP
Transmission Type: MANUAL
Number of Gears: 6
Gear Ratio 1st: 2.97 :1
Gear Ratio 2nd: 1.78 :1
Gear Ratio 3rd: 1.30 :1
Gear Ratio 4th: 1.00 :1
Gear Ratio 5th: 0.80 :1
Gear Ratio 6th: 0.63 :1
Final drive ratio: 3.31 :1
Driving wheels: REAR
Car test weight: 3500 lb.
% weight on front wheels: 54 %
Wheelbase: 107.1 in.
Tire section width: 255 mm.
Tire circumference: ft.
Wheel diameter: 19 in.
Tire profile: 45 %
Coefficient of drag: 0.36
Frontal area: sq.ft.
Overall height: 55.7 in.
Overall width: 73.9 in.
Ground clearance: 5.7 in.

2006 FORD SHELBY GT500
----------------------

GENERAL PARAMETERS

Air Temperature: 65 deg. F.
Barometric Pressure: 29.38 in. Hg.
Relative Humidity: 55 %
Elevation above Reference: 0 ft.
Headwind (+), Tailwind (-): 0 mph
Road Grade (+=Ascend, -=Descend): 0 %
Shift Time, Manual: 0.50 sec.
Shift Time, Auto: 0.30 sec.
Engage Time, Manual: 0.20 sec.
Engage Time, Auto: 0.10 sec.
Clutch Slip Max. Time, Manual: 5.00 sec.
Brake Release Time at Start, Auto: 0.10 sec.
Trans. Engage Method-Lin,Prog,Regr: R
Shift@O=Optim,R=Redline,D=Driver,P=Prog: O
Engine Free Decel Rate: 2000 rpm/sec
Engine Bog Down Decel Rate: 4000 rpm/sec
Engine Wheelspin Decel Rate, Manual: 500 rpm/sec
Engine Clutch Slip Decel Rate, Man.: 250 rpm/sec
Engine Trans. Slip Accel Rate, Auto: 750 rpm/sec
Engine Wheelspin Accel Rate, Auto: 250 rpm/sec
Max. Coefficient of Static Friction: 1.00
Max. Coefficient of Kinetic Friction: 0.85
Coefficient of Rolling Resistance: 0.013
Tire Expansion Factor: 0.020 %/mph
Hot Tire Pressure: 35 p.s.i.
Tire Tread to Section Width Ratio: 90.0 %
Wheel and Tire Weight: 45 lb.
Minimum Engine Speed: 700 rpm
Zero h.p. Engine Speed: 600 rpm
Turbo Start Speed: 3000 rpm
Max. Torque Conv. Slack Until, Auto: 2000 rpm
Low Max. Brake Torque Speed, Auto: 2000 rpm
Time Increment: 0.05 sec.
Start Time after Car Moves: 1.00 ft.
Mechanical Losses-Auxiliaries: 2.00 %
Mechanical Losses-Manual Trans.: 6.00 %
Mechanical Losses-Auto Trans.: 8.00 %
Mechanical Losses-Differential: 4.00 %
Mechanical Losses-Axles & Shafts: 5.00 %
Mechanical Losses-Torque Converter: 3.00 %
Max. Clutch Slip Losses, Manual: 10.00 %
Max. Trans. Slip Losses, Auto: 15.00 %
Max. Torq. Conv. Torque Multiplier: 2.25
Effective Engine Radius: 3.0 in.
Drive Shaft Radius: 1.0 in.
Center of Gravity from bottom: 30.0 %
Graphics Aspect Ratio (EGA): 0.75
Graphics Aspect Ratio (VGA): 1.00
Sound Effects (Y=Yes, N=No): Y

2006 FORD SHELBY GT500
----------------------

STANDING START ACCELERATION RESULTS

Starting vehicle speed: 0 mph
Starting engine speed: 2000 rpm
Starting gear: 1st

Optimum Shift Points:
1st 6500 rpm @ 56 mph
2nd 6500 rpm @ 94 mph
3rd 6500 rpm @ 129 mph
4th 6500 rpm @ 169 mph
5th 6500 rpm @ 213 mph

Time to Speed:
0- 30 mph............ 1.9 sec.
0- 40 mph............ 2.5 sec.
0- 50 mph............ 3.1 sec.
0- 60 mph............ 4.5 sec.
0- 70 mph............ 5.5 sec.
0- 80 mph............ 6.5 sec.
0- 90 mph............ 7.7 sec.
0-100 mph............ 9.8 sec.

Time to Distance:
0- 100 ft............ 2.9 sec.
0- 500 ft............ 7.1 sec.
0-1320 ft.(1/4 mile). 12.6 sec.
@ 115.8 mph

Top Speed............. 173.6 mph

Uncle Nicky

awesome. awesome, awesome, awesome.

John H

Wow. That's a lot of specific info that I've never seen listed for a car before. Where did you get all that?

sonic98gt

Wow. That's a lot of specific info that I've never seen listed for a car before. Where did you get all that?
[/b][/quote]

Well, most of the numbers came from the specs I found on the web (wish I could remember where). The c/d# came from a stock '05, the HP I bumped up 'cause I'm reading that 450 is conservative, the hp@rpm and tq@rpm numbers came from data on the Ford GT, and I added a few pounds for the larger engine. All of these numbers are educated guesses, so anyone let me know if you have a better idea. I'll run the test again with any suggestions.

The program I use is the old CarTest DOS version, so take it for what it is...

KGSGT350

I AM NOT TOO SURE ABOUT THOSE NUMBERS. I WOULD EXPECT A LITTLE FASTER TIME TO 60 and the 1/4. But I do relize one you get some practice and the car broken in they should improve.

rhumb

Sounds quite plausible to me. Perhaps a touch conservative, but probably realistic.

Rampant

That is a good exercise.

But, 3500 lb curb weight? How is an iron block, 5.4 with an s/c the same weight as the aluminum 4.6 (not to mention the huge brakes, etc.)? I think that is way low. The alum. block is supposed to shave 75# by itself (over the 4.6), not to mention the heads and blower on top of the 5.4. I would expect the car to weight in at least 3750.

sonic98gt

Okay, at 3750 lbs.:

2006 FORD SHELBY GT500
----------------------

STANDING START ACCELERATION RESULTS

Starting vehicle speed: 0 mph
Starting engine speed: 2000 rpm
Starting gear: 1st

Optimum Shift Points:
1st 6500 rpm @ 56 mph
2nd 6500 rpm @ 94 mph
3rd 6500 rpm @ 129 mph
4th 6500 rpm @ 169 mph
5th 6500 rpm @ 213 mph

Time to Speed:
0- 30 mph............ 2.0 sec.
0- 40 mph............ 2.6 sec.
0- 50 mph............ 3.3 sec.
0- 60 mph............ 4.7 sec.
0- 70 mph............ 5.8 sec.
0- 80 mph............ 6.9 sec.
0- 90 mph............ 8.2 sec.
0-100 mph............ 10.4 sec.

Time to Distance:
0- 100 ft............ 3.0 sec.
0- 500 ft............ 7.2 sec.
0-1320 ft.(1/4 mile). 12.9 sec.
@ 113.4 mph

Top Speed............. 172.8 mph

truebluegt2002

the est. weight is 3600, from ford. 4.5 0-60 is what my guess was, but I was hoping for a low 12 quarter. we'll have to see what it really does when they start hitting the track i guess.

I like that top speed though!!!

Rampant

No matter how you slice it, that is going to be one heck of a car.

Manatee

If you re-ran the program using data from the '05GT, how close are the program's results compared to the test results from the magazines? This might be a way to determine the accuracy or result tolerance of the program. Once you test with a known quantity (05 GT) then you can then figure out what the GT500 might be able to achieve.

sonic98gt

The numbers I get for the stock GT are:

0-60 in 5.6
1/4 mile in 14.1 @ 102.6 mph
147 mph top speed

PeterPienaar

Hmm. Whereas real drivers have run it stock 4.9 0-60 and 13.2 1/4. Hopefully we'll see a similar difference in the projected and actual results for the GT500.

mobster

This may be a stupid question but.... what turbo?

sonic98gt

It's just a default setting of the program. If I tell it there's a turbo, then this is the default start rpm. It has nothing to do with the numbers you see.

mobster

Oh, okay

cntchds

213 mph in 5th gear? a little much

sonic98gt

I'd assume that doesn't take into account the drag limiting. Hey, I said it's an old DOS program, so...

Twilightblu92

Remove the spare tire, jack and rear seat, you could make up for a couple hundred pounds

k-dubb

12.9@113....hitting the brakes at the 1000' mark.