Chrysler LA engine

Chrysler LA engine
LA engine installed in an Chrysler Australia 1976 Charger coupé
Overview
Manufacturer	Chrysler
Also called	Magnum engine
Production	1964–2003
Layout
Configuration	Naturally aspirated 90° V6 Naturally aspirated 90° V8 Naturally aspirated 90° V10
Displacement	3.9 L; 238.2 cu in (3,903.2 cc) 4.5 L; 273.5 cu in (4,482.2 cc) 5.2 L; 317.3 cu in (5,199.9 cc) 5.6 L; 339.4 cu in (5,562.5 cc) 5.9 L; 359.8 cu in (5,895.6 cc) 8.0 L; 487.8 cu in (7,993.8 cc)
Cylinder bore	92.1 mm (3.63 in) 99.2 mm (3.91 in) 99.3 mm (3.91 in) 101.6 mm (4.00 in) 102.6 mm (4.04 in)
Piston stroke	84 mm (3.3 in) 84.1 mm (3.31 in) 90.9 mm (3.58 in) 98.6 mm (3.88 in)
Cylinder block material	Cast iron
Cylinder head material	Cast iron
Valvetrain	OHV 2 valves per cylinder
Valvetrain drive system	Timing Chain
Combustion
Fuel system	Carburetor Throttle-body fuel injection Multi-point fuel injection (V6 only) Sequential fuel injection (V6 only)
Fuel type	Gasoline
Oil system	Wet sump
Cooling system	Water-cooled
Chronology
Predecessor	Chrysler A engine Chrysler B engine
Successor	Chrysler PowerTech engine Chrysler Hemi engine

The LA engine is a family of overhead-valve small-block 90° V-configured gasoline engines built by Chrysler Corporation between 1964 and 2003. Primarily V8s, the line includes a single V6 and V10, both derivations of its Magnum series introduced in 1992. A replacement of the Chrysler A engine, they were factory-installed in passenger vehicles, trucks and vans, commercial vehicles, marine and industrial applications. Their combustion chambers are wedge-shaped, rather than polyspheric, as in the A engine, or hemispheric in the Chrysler Hemi. LA engines have the same 4.46 in (113 mm) bore spacing as the A engines.

LA engines were made at Chrysler's Mound Road Engine plant in Detroit, Michigan, as well as plants in Canada and Mexico. The "LA" stands for "Light A," as the 1956–1967 "A" engine it was closely based on and shares many parts with^[1] was nearly 50 pounds heavier.^[2] The "LA" and "A" production overlapped from 1964–1966 in the U.S. and through 1967 in export vehicles when the "A" 318 engine was phased out.^[3]

The basic design of the LA engine would go unchanged through the development of the "Magnum" upgrade (1992–1993), and continue into the 2000s with changes to enhance power and efficiency.^[2]