410 Sprint Car Engine Specs

Engine Type

Internal combustion
Fuel injected
Naturally aspirated
Aluminum block and heads
Overhead camshaft

Displacement

410 cubic inches (6.7 liters)
Limited by engine rules

Bore and Stroke

Bore: 4.185 inches (106.3 mm)
Stroke: 3.6875 inches (93.66 mm)

Compression Ratio

12.5:1
Limited by engine rules

Valve Train

Single overhead camshaft
Four valves per cylinder
Intake valve size: 2.050 inches (52.07 mm)
Exhaust valve size: 1.600 inches (40.64 mm)

Induction

Fuel injection system
Fuel injectors: 8
Injector size: 1000 cc/min

Ignition

Coil-on-plug ignition system
Spark plugs: NGK LZFR7F
Spark plug gap: 0.040 inches (1.02 mm)

Exhaust

Open headers
Exhaust system: Stainless steel

Lubrication

Wet sump oil system
Oil capacity: 12 quarts
Oil type: 20W-50 synthetic racing oil

Cooling

Water-cooled
Radiator size: 24 inches x 18 inches
Water pump: Centrifugal

Electronics

Engine management system: MoTeC M1
Data acquisition system: MoTeC i2 Pro

Power and Torque

Power output: 700-800 horsepower
Torque output: 550-650 lb-ft

Weight

Approximately 250-300 pounds

Reliability

Engines are typically rebuilt after every race
Maintenance is critical to engine performance and reliability

Cost

New engine: $20,000-$30,000
Rebuilt engine: $10,000-$15,000

Conclusion

The 410 sprint car engine is a powerful and complex piece of machinery. It is designed to produce maximum power and torque while being as lightweight and reliable as possible. These engines are built to the highest standards and are capable of powering sprint cars to speeds of over 170 mph.