
1999 Chrysler PT Cruiser concept
by Rex
Roy

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PHOTOS:

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Gobs of
supercharged V-8 power.

Slow icon
It feels
really heavy, but lacks nothing in the oomph column.

Stop icon
The exhaust’s too quiet. And
they’re not making many of them.
Clever those Ford
marketing types … their new favorite phrase regarding the Mustang is “A steed
for every need.” True, or just banal hyperbole?
After driving a 2007 Mustang GT,
Shelby GT, and a Shelby GT500, I see some truth in this
advertising.
On a pleasant day in October, Ford
rented the road course at
Moroso
Motorsports
Park near
Palm Beach,
Florida. They populated the track with all
manner of Mustangs, ranging from the basic 300-horsepower GT to a full-blown
Shelby GT500. The Mustangs were there for the press’s driving pleasure, and it
was just that.
From garden variety to
near-exotic
Our baseline for the day was the
garden variety Mustang GT. It’s a pretty happy car around the flat 2.25 miles of
Moroso. But things you’d expect from a standard production car surface in the
GT. As you upshift through the gears, the suspension relaxes, then recompresses.
This is never unsettling; it’s just the way a high-volume production car is set
up. Same for the brakes — they get hot and fade after a few hot corners.
On the street, these things don’t
matter, but you notice them after turning a bunch of hot laps. On the plus side,
we noticed how balanced the GT is. It’s an easy car to drive quickly because it
responds to the helm and the throttle with equal aplomb.
Stepping up to the Shelby GT, we
experienced what a bit of tuning does for the base GT. The Shelby GT gets
hardware developed by Ford Racing and Shelby’s team (the old man himself was
involved), and it changes the car markedly. The hardware includes packages from
Ford Racing called the Power Pack and the Handling Pack. The former includes a
low-restriction muffler, a cold-air intake system, and new engine electronics
mapping. The result is a verifiable 20-horsepower gain at the rear wheels. The
latter package drops the Mustang a good 1.5 inches using new springs and
dampers. Different sway bars and a strut tower brace finish off the
package.
On the track, the Shelby GT feels
much more composed than the standard GT. Gone is the seesawing at gear changes,
and the car’s attitude in corners is much more neutral. This suspension makes a
driver aware of just how much understeer is dialed into a standard GT. The
Shelby GT’s rear end is much livelier, making this model feel the lightest and
most responsive of the trio we sampled. While I’d like to say I could feel the
extra power, my hind side is not finely enough calibrated to pick up on an
increase that works out to be around seven percent. My ears could hear how good
the low-restriction exhaust sounded.

JD Power button
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Circle ratings for new cars and trucks
Nirvana
achieved
Moving up to the Shelby GT500, the
driving experience changes completely.
Powered by an iron-block 5.4-liter
Triton V-8 with a Roots-style supercharger running at 8.5 psi of boost, the
alpha male of Mustangs puts out an even 500 horsepower. The transmission is a
Tremec TR6060, a special six-speed manual with high torque capabilities. Its
suspension features plenty of unique performance pieces, and the brakes are
massive 14-inch, four-pot Brembo units. Both front and rear brake discs are
vented. Rolling stock measures out at P255/45ZR18 in front and P285/40ZR18 out
back.

Dunne
Pulling out of pit lane, the
increase in power is immediately apparent, as is (surprisingly) the quietness of
the exhaust. This car swooshes along vacuuming up track like a rabid Hoover.
While clearly faster than the Shelby GT, the Shelby GT500 feels much heavier
because understeer is more prominent, in part due to 57-percent of the car’s
weight being over the front axle. (The 4.6-liter in the two lesser GTs is an
aluminum-block engine, the 5.4-liter is iron.) From outside the car, the
supercharger’s characteristic whine signaled big power, but inside the greatest
sensation was never-ending torque. Thankfully, the big brakes were up to track
duty.
Our on-track impressions of the
Shelby GT500 were confirmed with a week of road time in Michigan. Around the
streets of Detroit, the big Shelby felt like a classic Motown muscle car — big,
brawny, and ready to brawl. Giving in to its desire to fight, we took it to
Milan Dragway to see how it would do facing off against others during a
test-and-tune Wednesday time-trial session. Easily ripping off quarter miles in
the low 13s at over 109 mph says much more about the capabilities of the Shelby
than the capabilities of the driver. The author was dusted in the first round of
bracket-racing eliminations.
With the demise of the truly
fantastic Ford GT, the Shelby GT500 is left to carry Ford Motor Company’s
performance mantle. While it is clearly the king of all current Mustangs, it’s
no Ford GT. However, this is an appropriate time to utter, “The King is dead,
long live the King.”
2007 Ford Shelby
GT500
Base
price: $41,295
GET CURRENT
PRICING
GET AN INSURANCE
QUOTE
Engine: Supercharged 5.4-liter V-8, 500 hp/480
lb-ft
Transmission: Six-speed
manual, rear-wheel drive
Length x width x
height: 188 x 73.9 x 54.5 in
Wheelbase: 107.1
in
Curb
weight: 3920 lb
Fuel economy
(EPA city/hwy): 15/21 mpg (manual)
Safety
equipment: Anti-lock brakes and traction control; front and side
airbags
Major standard
features: Climate control; power
windows, locks, and mirrors; 18-inch wheels; tilt steering wheel with fingertip
controls; power front seats; lots of
Shelby
badges
Warranty:
Three-year/36,000 mile