AMC straight-6 engine

AMC Straight-6 engine
AMC Straight-6 engine
Overview
Manufacturer	American Motors Corporation (1964-1987); Chrysler Corporation (1987-2006);
Production	1964–2006
Layout
Configuration	Naturally aspirated Straight-6
Displacement	199 cu in (3.3 L); 232 cu in (3.8 L); 242 cu in (4.0 L); 252 cu in (4.1 L); 258 cu in (4.2 L); 282 cu in (4.6 L);
Cylinder bore	3.75 in (95.3 mm); 3.875 in (98.4 mm); 3.91 in (99.3 mm); 3.917 in (99.5 mm);
Piston stroke	3 in (76.2 mm); 3.414 in (86.7 mm); 3.4375 in (87.3 mm); 3.5 in (88.9 mm); 3.895 in (98.9 mm);
Cylinder block material	Cast-iron
Cylinder head material	Cast-iron
Valvetrain	OHV 2 valves x cyl.
Compression ratio	7.7:1, 8.0:1, 8.5:1, 9.5:1
Combustion
Fuel system	Carburetor; Multi-port fuel injection;
Management	AMC CEC; Renix or Mopar (manufactured by Siemens);
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	129–200 hp (96–149 kW; 131–203 PS)
Torque output	216–280 lb⋅ft (293–380 N⋅m)
Dimensions
Dry weight	483 lb (219 kg) (4.0 L engine)

The AMC straight-6 engine is a family of straight-six engines produced by American Motors Corporation (AMC) and used in passenger cars and Jeep vehicles from 1964 through 2006. Production continued after Chrysler acquired AMC in 1987.

American Motors' first inline-six engine was a legacy model initially designed by Nash Motors; it was discontinued in 1965. A completely new design was introduced by AMC in 1964. The engine evolved in several displacements and underwent upgrades. Vehículos Automotores Mexicanos (VAM) also manufactured this family of six-cylinder engines, including a version available only in Mexico.

A new 4.0 L engine was introduced by AMC in 1986 and became the final version of AMC inline sixes. It is regarded as one of the best 4x4 and off-road engines. This engine was produced by Chrysler through 2006.

Among "classic American engines, the AMC straight-six stands as a testament to smart engineering and enduring performance".

AMC Straight-6 engine

Overview
Manufacturer	American Motors Corporation (1964-1987) Chrysler Corporation (1987-2006)
Production	1964–2006
Layout
Configuration	Naturally aspirated Straight-6
Displacement	199 cu in (3.3 L) 232 cu in (3.8 L) 242 cu in (4.0 L) 252 cu in (4.1 L) 258 cu in (4.2 L) 282 cu in (4.6 L)
Cylinder bore	3.75 in (95.3 mm) 3.875 in (98.4 mm) 3.91 in (99.3 mm) 3.917 in (99.5 mm)
Piston stroke	3 in (76.2 mm) 3.414 in (86.7 mm) 3.4375 in (87.3 mm) 3.5 in (88.9 mm) 3.895 in (98.9 mm)
Cylinder block material	Cast-iron
Cylinder head material	Cast-iron
Valvetrain	OHV 2 valves x cyl.
Compression ratio	7.7:1, 8.0:1, 8.5:1, 9.5:1
Combustion
Fuel system	Carburetor Multi-port fuel injection
Management	AMC CEC Renix or Mopar (manufactured by Siemens)
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	129–200 hp (96–149 kW; 131–203 PS)
Torque output	216–280 lb⋅ft (293–380 N⋅m)
Dimensions
Dry weight	483 lb (219 kg) (4.0 L engine)