Nascar Engine Specs 2023

Nascar Engine Specs

NASCAR engines are awe-inspiring pieces of engineering engineered for raw power and uncompromising durability to endure the rigorous needs of the race.

Here’s a rundown of their most important specifications along with pictures to show their components

Engine Type90deg 5.86 L (358 cu in) Pushrod V8
Power Output670 horsepower (500 kW) between 510 and 670 horsepower (380 kW) dependent on the the track
Torque800 Nm (530 FTLB)
Compression Ratio12:1
Bore and Stroke4.185 in (106 millimeters) 4.185 in (106 mm) 3.25 in (83 millimeters)
Redline9,000 rpm
Fuel SystemElectronic fuel injection, with a one 41mm restrictor plate (550 track hp) or with no restrictor plate (670 HP tracks)
Ignition SystemSingle coil per cylinder NASCAR-spec ignition box
Air IntakeRestrictor plate (diameter is dependent on the track)
Exhaust SystemOpen headers
Lubrication SystemDry sump
Engine Oil Capacity12-14 quarts (11.4-13.2 liters)
Engine Oil TypeSynthetic 5W-30 or 10W-30
Oil Filter TypeDry sump specifically high-performance filter
Oil Change Cost150-200$ (parts as well as labor)


The NASCAR Cup Series engines Are indeed robust with the 5.86 L (358 cu in) pushrod V8 that can produce up to 750 horsepower on specific tracks.

The engines aren’t identical And teams can fine-tune according to NASCAR’s specifications. These engines were specifically designed specifically for NASCAR and aren’t made in traditional production lines.

In spite of the strict regulations, there is constant debate about raising the horsepower. We hope you find this article on NASCAR engine specifications helpful And we thank you for exploring this world of NASCAR engines!

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