NASCAR engines
| NASCAR engines | |
|---|---|
| Overview | |
| Manufacturer | Ford (1950–present) Chevrolet (1955–present) Toyota TRD (2004–present) Dodge (1953–1985, 2001–2012) Pontiac (1959-2004) Buick (1981–1987) Oldsmobile (1949-1987) Hudson (1951–1954) Plymouth (1959–1977) Chrysler (1954–1956, 1981–1985) Mercury (1952–1987) Nash (1950–1951) AMC (1971–1978) |
| Production | 1949–present |
| Layout | |
| Configuration | 90° pushrod V-8 60°–90° V-6 (Busch Series only; 1982–1994) I-6 (Hudson Hornet) |
| Displacement | 231–440 cu in (3.8–7.2 L) |
| Cylinder bore | 3.8–4.185 in (97–106 mm) |
| Piston stroke | 3.25–4.5 in (83–114 mm) |
| Valvetrain | 16-valve, OHV, two-valves per cylinder |
| Compression ratio | 7.2:1–14:1 |
| Combustion | |
| Supercharger | Naturally-aspirated |
| Fuel system | Carburetor / Electronic fuel injection |
| Fuel type | Gasoline |
| Oil system | Dry sump |
| Output | |
| Power output | 135–750 hp (101–559 kW) |
| Torque output | 253–783 lb⋅ft (343–1,062 N⋅m) |
| Dimensions | |
| Dry weight | 575 lb (261 kg) |
NASCAR, the highest governing body and top level division for stock car racing in the United States, has used a range of different types of engine configurations and displacements since its inaugural season in 1949. The engines are currently used in the Cup Series, Xfinity Series, Camping World Truck Series, and the Whelen Modified Tour.