Engine

• NASCAR engines are Pushrod V8s with 5.86L (5,860 cubic cm or 358 cubic inches).
  
  

Transmission

• The transmission is a four-speed manual.
  
  

Performance

• The engine outputs 865 horsepower (645 Kilowatts) unrestricted and 445 horsepower (332 Kilowatts) with the restrictor plate (introduced in 2007).
  
  

Fuel

• The fuel capacity is 17.75 gal. (or 67L). It is delivered through a naturally aspirated carburation system. The fuel is supplied by Sunoco; it is 92 MON, 98 AKI and 104 RON unleaded. The carburetor is a four-barrel that handles 750 to 830 cubic feet per minute (or 354 to 392 liters per second.)