Community hub
Recent from talks
Knowledge base stats:
Talk channels stats:
Members stats:
Chrysler Slant-6 engine
The Chrysler Slant-Six was the promotional name for an overhead valve inline-6 engine produced by Chrysler Motors between 1959 and 1991. and it remains in use as a popular reference name for the powerplant. Featuring a reverse-flow cylinder head and cylinder bank inclined at a 30-degree angle from vertical, it was introduced in 170 cu in (2.8 L) and 225 cu in (3.7 L) displacements for the 1960 model year. It was a clean-sheet design known within Chrysler as the G-engine, built as a direct replacement for the flathead Chrysler straight six that the company started business with in 1925.
The design proved very successful, being utilized in cars, trucks, boats, and agricultural, and industrial applications.
The “Slant Six” nomenclature did not emerge as an auto-enthusiasts’ nickname. Though the phrase isn’t seen in 1960- or 1961-model (Plymouth) Valiant brochures, it was used in Chrysler’s own press releases and advertising concurrent with the Valiant’s late-October 1959 introduction and initial production year.
The Chrysler Slant Six engine was a clean-sheet design, led by Willem Weertman, later Chrysler's chief engine designer. Its characteristic 30° inclined cylinder block gave it a lower height, copying the same cant Mercedes-Benz had introduced in 1952 in its M186-engined 300SL sports car. This enabled Chrysler stylists to lower hood lines, and also made room for the water pump to be mounted with a lateral offset, significantly shortening the engine's overall length. The slanted cylinder block also provides space in the vehicle's engine bay for intake and exhaust manifolds with runners of longer and more nearly equal length compared to the rake- or log-style manifolds typical of other inline engines. The No. 1 and No. 6 intake runners are of approximately equal length, the No. 2 and No. 5 equal but shorter, and the No. 3 and No. 4 equal and shortest. This has the effect of broadening the torque curve for better performance.[citation needed] The Slant Six manifold configuration gives relatively even distribution of fuel mixture to all cylinders, and presents less flow restriction. This, in turn, provides for relatively good airflow through the engine despite the intake and exhaust ports being on the same side of the head rather than in a crossflow arrangement.
It was introduced in two displacements in 1960: The 170 cu in (2.8 L) "LG" (low-G, referring to the relatively short engine block casting and crankshaft stroke) in the compact Valiant, and the 225 cu in (3.7 L) "RG" (raised-G, referring to the relatively tall engine block casting and crankshaft stroke) in full-size Plymouth and Dodge Dart models. In 1960, the engine was called the "30-D Economy Six" engine by Plymouth marketers, referring to the 30° cylinder block angle.
The G-engine was offered in various configurations in the North American market until 1983 in cars, 1987 in trucks, and 1991 for marine, agricultural, and industrial use. The G-engine was used by Chrysler's international operations in locally produced vehicles. It was also purchased by other original equipment manufacturers for installation in commercial vehicles, agricultural and industrial equipment, and boats.
The G-engine gained a reputation for reliability and durability. The basic design is rigid and sturdy, in part because the engine was designed to be made of either iron or aluminum. An aluminum block was produced in 1961–1963, but most blocks were made of iron. The block is of a deep-skirt design, with the crankshaft axis well above the oil pan rails for structural rigidity. Although only four main bearings are used, they are of the same dimensions as those in the 2G 5-bearing (1964–1971) Hemi, and fewer mains results in a crankshaft better able to withstand the effects of torque.[citation needed] Efficient cooling and lubrication systems, a favorable ratio of connecting rod length to stroke, and a forged steel crankshaft (on engines made through mid-1976) all contributed to the engine's strength and durability.
The G-engine was designed for utility and economy, and gave better overall performance than its competitors at its 1960 introduction.[citation needed] It generally kept up through the 1960s and early-1970s with its direct competition,[citation needed] though specialty 6-cylinder engines like the Pontiac OHC Six, a brief GM outlier designed for its sporty Firebird pony car, bested the performance of most versions of the Slant-6. After an early factory racing program was discontinued by 1962, the Slant Six did not receive much performance development. Most Slant Sixes were equipped with a single 1-barrel carburetor. Starting in the early 1970s, primitive emission controls adversely affected driveability and power, though a version of the 2-barrel carburetor package first released for marine and export markets in 1967 was offered in North America from 1977 to 1983 under the "Super Six" name. Performance figures were only slightly higher, but driveability was substantially improved.
Hub AI
Chrysler Slant-6 engine AI simulator
(@Chrysler Slant-6 engine_simulator)
Chrysler Slant-6 engine
The Chrysler Slant-Six was the promotional name for an overhead valve inline-6 engine produced by Chrysler Motors between 1959 and 1991. and it remains in use as a popular reference name for the powerplant. Featuring a reverse-flow cylinder head and cylinder bank inclined at a 30-degree angle from vertical, it was introduced in 170 cu in (2.8 L) and 225 cu in (3.7 L) displacements for the 1960 model year. It was a clean-sheet design known within Chrysler as the G-engine, built as a direct replacement for the flathead Chrysler straight six that the company started business with in 1925.
The design proved very successful, being utilized in cars, trucks, boats, and agricultural, and industrial applications.
The “Slant Six” nomenclature did not emerge as an auto-enthusiasts’ nickname. Though the phrase isn’t seen in 1960- or 1961-model (Plymouth) Valiant brochures, it was used in Chrysler’s own press releases and advertising concurrent with the Valiant’s late-October 1959 introduction and initial production year.
The Chrysler Slant Six engine was a clean-sheet design, led by Willem Weertman, later Chrysler's chief engine designer. Its characteristic 30° inclined cylinder block gave it a lower height, copying the same cant Mercedes-Benz had introduced in 1952 in its M186-engined 300SL sports car. This enabled Chrysler stylists to lower hood lines, and also made room for the water pump to be mounted with a lateral offset, significantly shortening the engine's overall length. The slanted cylinder block also provides space in the vehicle's engine bay for intake and exhaust manifolds with runners of longer and more nearly equal length compared to the rake- or log-style manifolds typical of other inline engines. The No. 1 and No. 6 intake runners are of approximately equal length, the No. 2 and No. 5 equal but shorter, and the No. 3 and No. 4 equal and shortest. This has the effect of broadening the torque curve for better performance.[citation needed] The Slant Six manifold configuration gives relatively even distribution of fuel mixture to all cylinders, and presents less flow restriction. This, in turn, provides for relatively good airflow through the engine despite the intake and exhaust ports being on the same side of the head rather than in a crossflow arrangement.
It was introduced in two displacements in 1960: The 170 cu in (2.8 L) "LG" (low-G, referring to the relatively short engine block casting and crankshaft stroke) in the compact Valiant, and the 225 cu in (3.7 L) "RG" (raised-G, referring to the relatively tall engine block casting and crankshaft stroke) in full-size Plymouth and Dodge Dart models. In 1960, the engine was called the "30-D Economy Six" engine by Plymouth marketers, referring to the 30° cylinder block angle.
The G-engine was offered in various configurations in the North American market until 1983 in cars, 1987 in trucks, and 1991 for marine, agricultural, and industrial use. The G-engine was used by Chrysler's international operations in locally produced vehicles. It was also purchased by other original equipment manufacturers for installation in commercial vehicles, agricultural and industrial equipment, and boats.
The G-engine gained a reputation for reliability and durability. The basic design is rigid and sturdy, in part because the engine was designed to be made of either iron or aluminum. An aluminum block was produced in 1961–1963, but most blocks were made of iron. The block is of a deep-skirt design, with the crankshaft axis well above the oil pan rails for structural rigidity. Although only four main bearings are used, they are of the same dimensions as those in the 2G 5-bearing (1964–1971) Hemi, and fewer mains results in a crankshaft better able to withstand the effects of torque.[citation needed] Efficient cooling and lubrication systems, a favorable ratio of connecting rod length to stroke, and a forged steel crankshaft (on engines made through mid-1976) all contributed to the engine's strength and durability.
The G-engine was designed for utility and economy, and gave better overall performance than its competitors at its 1960 introduction.[citation needed] It generally kept up through the 1960s and early-1970s with its direct competition,[citation needed] though specialty 6-cylinder engines like the Pontiac OHC Six, a brief GM outlier designed for its sporty Firebird pony car, bested the performance of most versions of the Slant-6. After an early factory racing program was discontinued by 1962, the Slant Six did not receive much performance development. Most Slant Sixes were equipped with a single 1-barrel carburetor. Starting in the early 1970s, primitive emission controls adversely affected driveability and power, though a version of the 2-barrel carburetor package first released for marine and export markets in 1967 was offered in North America from 1977 to 1983 under the "Super Six" name. Performance figures were only slightly higher, but driveability was substantially improved.