![]() The LA engine was available until 1991, when it was superseded by the Magnum version. It appeared in volume production beginning with the 1968 model year, replacing the last of the export "A" 318 engines equipped with polyspherical chambered heads ("A" 318 engines were not offered in 1967 domestic vehicles). It was available in the Dodge Dart only, and the car so equipped was called the "D-Dart", a reference to its classification in NHRA D-stock for drag racing, which was the car's only intended purpose. In 1965 (only) the muffler was of "straight through" construction.Ī special version was also available in 1966 only - it used a 0.5 in (12.7 mm) lift solid-lifter camshaft, fabricated-steel-tube exhaust, and a Holley 4-barrel carburetor, producing 275 hp (205 kW) (1 hp/cu in). It was fitted to a low-restriction exhaust system with a 2.5 in (64 mm) exhaust pipe, collector-type Y-junction, and exposed resonator. carburetor and matching intake manifold, chrome unsilenced air cleaner with callout sticker, longer-duration and higher-lift camshaft and stronger valve springs, 10.5:1 compression ratio, and special black wrinkle valve covers with extruded aluminum appliques. Ī high performance 235 hp (175 kW) was offered 1965-1967, this was standard in the Barracuda Formula S model and optional in all other compact models excluding station wagons. Spark plugs were located in the side of the cylinder head, between the exhaust ports. The cylinder heads featured wedge-shaped combustion chambers with a single intake and a single exhaust valve for each cylinder. These actuated the overhead steel intake and exhaust valves. The valvetrain consisted of a cast nodular iron camshaft, solid or hydraulic lifters, solid pushrods and shaft-mounted, malleable iron rocker arms (stamped steel on later hydraulic-cam engines). The reciprocating assembly included a cast or forged steel crankshaft, drop forged steel connecting rods and cast aluminum pistons. It had a mechanical solid lifter valvetrain until 1968 when hydraulic lifters were introduced hydraulic lifters generally make for a quieter valvetrain. The 273 cu in (4.5 L) was the first LA engine, beginning model year 1964 and offered through 1969, rated at 180 hp (134 kW). The engine was produced through 2004 before it was replaced with the 3.7 L Power Tech V6. In 1997, it was then upgraded to sequential fuel injection. Next, in the 1992 Magnum update, the throttle-body fuel injection was upgraded to a multi-port fuel injection. In 1988 it was upgraded with throttle-body fuel injection and roller tappets which it retained until the 1992 Magnum update. In 1987 it used a two-barrel Holley carburetor and hydraulic tappets. Output was 125 hp (93 kW) and 195 lb⋅ft (264 N⋅m) until it was replaced by the Magnum 3.9 starting in 1992. The bore and stroke are 99.3 mm (3.9 in) and 84 mm (3.3 in), respectively. It is essentially a six-cylinder version of the 318 V8. The 238.2 cu in (3.9 L) V6 was released in 1987 for use in the Dodge Dakota and as a replacement for the older, longer Slant-Six for the Dodge RAM. ![]() 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. The "LA" and "A" production overlapped from 1964 - 1966 in the US and through 1967 in export vehicles when the "A" 318 engine was phased out. The "LA" stands for "Light A", as the 1956 - 1967 "A" engine it was closely based on and shares many parts with was nearly 50 pounds heavier. LA engines were made at Chrysler's Mound Road Engine plant in Detroit, Michigan, as well as plants in Canada and Mexico. LA engines have the same 4.46 in (113 mm) bore spacing as the A engines. Their combustion chambers are wedge-shaped, rather than polyspherical, as in the predecessor A engine, or hemispherical in the Hemi. They were factory-installed in passenger vehicles, trucks and vans, commercial vehicles, marine and industrial applications from 1964 through 1991 (318) & 1992 (360). The LA engines are a family of pushrod OHV small block 90° V-configured gasoline engines built by Chrysler Corporation.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |