Chrysler A engine

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Chrysler starlogo.svg A engine
1959 Dodge Sweptside 318 A engine.jpg
Overview
Manufacturer Chrysler
Also calledPlymouth A engine
Production1956-1961 Mound Road Engine, Detroit, MI
Layout
Configuration V8
Displacement
  • 276.1 cu in (4.5 L)
  • 299.6 cu in (4.9 L)
  • 302.5 cu in (5.0 L)
  • 312.5 cu in (5.1 L)
  • 317.6 cu in (5.2 L)
  • 325.2 cu in (5.3 L)
Cylinder bore
  • 3+34 in (95.2 mm; 3.75 in)
  • 3+1316 in (96.8 mm; 3.81 in)
  • 3+78 in (98.4 mm; 3.88 in)
  • 3.91 in (99.3 mm)
  • 3+6164 in (100 mm; 3.95 in)
Piston stroke
  • 3+18 in (79.4 mm; 3.13 in)
  • 3+516 in (84.1 mm; 3.31 in)
Block material Cast iron
Head materialCast iron
Valvetrain OHV 2 valves x cyl.
Combustion
Fuel system4-barrel Carburetor
Fuel type Gasoline
Oil system Wet sump
Cooling system Water-cooled
Output
Power output 240–290 bhp (179–216 kW)
Chronology
Predecessor Polyspheric engines
Successor Chrysler LA engine

The Chrysler A engine is a small-block V8 gasoline engine built by Chrysler with polyspherical combustion chambers. It was produced from 1956 until 1967, when it was replaced by the wedge-head LA engine. It is not related to the hemispherical-head Hemi engine of the same era.

Contents

The A engine was first released in 1956, and was used exclusively in Plymouths until 1958. The cylinder bore center distance is 4.46 in (113.3 mm), larger than the earlier Dodge-based poly engines. The A engine formed the conceptual design basis of its successor, the LA engine.[ citation needed ]

Plymouth

277

The 277 "Hy-Fire" was the first A-block engine, produced for 1955 in the fall of 1954 and sharing almost nothing but the basic concepts with other engines built by Chrysler. Bore is 3+34 in (95.3 mm) and stroke is 3+18 in (79.4 mm; 3.13 in) for a piston displacement of 276.1 cu in (4,525 cc). It was replaced by the 301 in 1957, except for in low-priced Plaza models where it continued to be used during the 1957 model year. [1]

301

The Plymouth 301 replaced the 277 in 1957. Its piston displacement is 300 cu in (4,919 cc), owing to its 3.91 in (99.3 mm) bore. These dimensions are entirely different from the 1955 Chrysler 301.

303

The 1956 Plymouth 303 displaces 302.5 cu in (4,957 cc) and uses the same connecting rods as the 277; the bore is 3+1316 in (96.8 mm; 3.81 in) and the stroke is 3+516 in (84.1 mm; 3.31 in).

This engine was used in the following vehicles:

313

A 313 cu in (5,121 cc) version of the A engine called the 313 was produced from 1957 to 1967 primarily for Canadian and export markets. This engine has a bore of 3.875 in (98.4 mm) and the common 3.3125 in (84.1 mm) stroke, and was used in the following vehicles, amongst others:

318

The 318 is the most common version of the A engine, produced from 1957 through 1967 when it was replaced in all markets by the LA 318. Only Plymouth used this 318 in 1957 and 1958, but it was shared with the other Chrysler divisions from 1959 on. It displaces 318.2 cu in (5,214 cc) and has a 3.91 in (99.3 mm) bore and the 3.3125 in (84.1 mm) stroke.

A special version called the V-800, offered in 1957 and 1958, used two four-barrel carburetors to produce 290 hp (216 kW), making it the highest-output A engine. It was used in the 1957 and 1958 Plymouth Fury, but was also an option on Plymouth models lower in the model range. It was used on a wide variety of Chrysler products in Canada, right up to the end of production in 1967.

Bristol Cars introduced the 318 in the Mark II model of their 408 (in 1965) and continued to use it in the succeeding 409 and 410 until 1969. From 1962 until early 1965, Checker used this engine for their Aerobus limousines. [2]

Non-Plymouth

326

The 326 was launched in 1959. Its actual piston displacement is 325.25 cu in (5,330 cc) but it was marketed as a 326 to avoid confusion with the Dodge Red Ram 325. The 326 uses the same 3+516 in (84.1 mm) stroke as the 318, but with the largest bore of any A engine at 3+6164 in (100 mm; 3.95 in). It uses hydraulic tappets, unlike the earlier A engines, and was used in the 1959 Dodge Coronet.

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References

  1. Lee, John (1990). Standard Catalog of Chrysler, 1924-1990. Iola, WI: Krause Publications, Inc. pp. 390–391. ISBN   0-87341-142-0.
  2. Naul, G. Marshall (1999). Ron Kowalke (ed.). Standard Catalog of Independents: The Struggle to Survive Among Giants . Iola, WI: Krause Publications, Inc. p.  35. ISBN   0-87341-569-8.