Road Tests Real world tests of Cobra 427 S/C vs Ariel Atom

0-60mph

Top speed

Cobra 427 S/C
164 mph
Atom V8 500
170 mph

0-100mph

Cobra 427 S/C
10.3 s
Atom V8 500
5.4 s

1/4 mile

Cobra 427 S/C
12.2 s
Atom V8 500
11.2 s

Differences What are the advantages of each

Front view of Shelby Cobra 427 S/C

Reasons to consider the
Shelby Cobra 427 S/C

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Much bigger engine 7,000 cc vs 3,000 cc More than 2.2x bigger engine
More torque 463 ft-lb @ 2,800 RPM vs 268 ft-lb @ 7,750 RPM Around 75% stronger engine from a stand-still; more acceleration power
Side view of Ariel Atom

Reasons to consider the
Ariel Atom V8 500

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Has an air compressor Supercharger vs None About half of supercars have an air compressor
A lot faster to 100mph 5.4 s vs 10.3 s Around 50% faster to 100mph
Faster in the quarter mile 11.2 s vs 12.2 s Around 10% faster at the drag strip
Significantly lighter curb weight 1,210 lb vs 2,354 lb Around 50% lighter curb weight; less inertia to overcome when accelerating
More expensive sticker price $225k vs $10k 22.5x more expensive harder to own
Slightly more powerful engine 475 HP @ 10,000 RPM vs 425 HP @ 5,600 RPM More than 10% stronger engine

Specifications Full list of technical specs

general

Cobra 427 S/C  vs
Ariel Atom 
Brand Shelby Ariel
Price 9,500 225,000
Type of car Production car Production car
Year 1966 2008

power & handling

Power-to-weight ratio 5.54 lb/hp 2.55 lb/hp
Maximum hp 425 HP @ 5,600 RPM 475 HP @ 10,000 RPM
Maximum torque 463 ft-lb @ 2,800 RPM 268 ft-lb @ 7,750 RPM
Engine placement Front Mid
Steering system Rack and pinion Rack and pinion

engine

Displacement 7,000 cc 3,000 cc
Cylinders V8 V8
Air compressor None Supercharger
Fuels
Gas

road tests

Cobra 427 S/C  vs
Ariel Atom 
Top speed 164 mph 170 mph
1/4 mile 12.2 s 11.2 s
0-60mph 3.8 s 2.3 s
0-100mph 10.3 s 5.4 s

transmission

Drivetrain Front Engine / RWD 2WD
Gearing Traditional Traditional
# of gears 4 6

suspension, wheels & brakes

Front brakes Disc Disc
Rear brakes Disc Disc

physical dimensions

Curb weight 2,354 lb 1,210 lb
Shelby Cobra 427 S/C
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Ariel Atom V8 500
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