NASCAR engine

NASCAR engine
Overview
ManufacturerUnited States Ford (1950-present)
United States Chevrolet (1955-present)
Japan Toyota TRD (2004-present)[1][2][3]
United States Dodge (1953-1985, 2001-2012)
United States Pontiac (1959-2004)
United States Buick (1981-1987)
United States Oldsmobile (1949-1987)
United States Hudson (1951-1954)
United States Plymouth (1959-1977)
United States Chrysler (1954-1956, 1981-1985)
United States Mercury (1952-1987)
United States Nash (1950-1951)
United States AMC (1971-1978)
Production1949–present
Layout
Configuration90° pushrod V-8
60°-90° V-6 (Busch Series only; 1982-1994)[4][5]
I-6 (Hudson Hornet)[6]
Displacement231–440 cu in (3.8–7.2 L)
Cylinder bore3.8–4.185 in (97–106 mm)
Piston stroke3.25–4.5 in (83–114 mm)
Valvetrain16-valve, OHV, two-valves per cylinder
Compression ratio7.2:1–14:1
Combustion
SuperchargerNaturally-aspirated
Fuel systemCarburetor / Electronic fuel injection
Fuel typeGasoline
Oil systemDry sump
Output
Power output135–750 hp (101–559 kW)[7][8][9]
Torque output253–783 lb⋅ft (343–1,062 N⋅m)
Dimensions
Dry weight575 lb (261 kg)
Ford NASCAR engine.
NASCAR engine bay.
1987 Ford Thunderbird stock car engine.
Chevrolet NASCAR V-8 motor.
Ford V-8 stock car engine.

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.[10][11] The engines are currently used in the Cup Series, Xfinity Series, Camping World Truck Series, and the Whelen Modified Tour.

  1. ^ "TRD Engines Behind the Build".
  2. ^ "How do Toyota, Ford, and Chevrolet Engines Differ in NASCAR?".
  3. ^ "What Engine Does Toyota Use in Nascar? – McNally Institute".
  4. ^ "Chevy 4.3L 262ci V-6 - Engine Build - Overview - Tech - Hot Rod Magazine". Motortrend. 18 July 2014.
  5. ^ "1994 Chevy 90 deg V6 Race Engine Spec Sheet".
  6. ^ "Hudson Hornet Twin H-Power". Retrieved 9 October 2022.
  7. ^ "New NASCAR Rule Will Restrict Gear Ratios". AP NEWS.
  8. ^ "Horsepower reduction among 2015 rules package changes". February 26, 2016. Archived from the original on February 26, 2016.
  9. ^ "NASCAR reportedly considering Sprint Cup engine horsepower reduction in 2015 – MotorSportsTalk". May 2, 2016. Archived from the original on May 2, 2016.
  10. ^ "NASCAR: The Evolution Of The Sport (1948-1950's) | Bleacher Report | Latest News, Videos and Highlights". bleacherreport.com. Retrieved October 13, 2021.
  11. ^ "NASCAR: The Evolution Of The Sport (1950-1959) | Bleacher Report | Latest News, Videos and Highlights". bleacherreport.com. Retrieved October 13, 2021.