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History and concept The Slant-6, known within Chrysler as the G-engine, is one of Chrysler's two most famous automobile engines, along with the Hemi. The engine is an inline-6 piston engine designed so the cylinder line is at a 30-degree angle from vertical. Conceptually, the G-engine is half of a 60-degree V12. The engine was specifically designed to be slanted; it is not an upright engine that was simply installed in a slanted position like the engines in the Honda S2000 and BMW M6. The 30° inclination of the Slant-6 gave a shorter overall engine package, which enabled vehicle stylists to lower hoodlines. In addition, the slanted cylinder block provided ample space under the hood for intake and exhaust manifolds of higher efficiency than were commonly found on contemporaneous upright inline engines. The Chrysler Corporation is a United States-based automobile manufacturer, since 1998 merged with Daimler_Benz into DaimlerChrysler. ...
A small variety of cars, the most popular kind of automobile. ...
An engine is something that produces some effect from a given input. ...
Early Hemi in a 1957 Chrysler 300C. A Chrysler Hemi engine is one of three different internal combustion engine families from the Chrysler Corporation (or its successor, DaimlerChrysler) that are Hemi engines; in other words, they utilise a hemispherical combustion chamber. ...
The straight-6 (also inline 6, I-6, or I6) is an internal combustion engine with six cylinders aligned in a single row. ...
Components of a typical, four stroke cycle, DOHC piston engine. ...
A V12 is an internal combustion engine with 12 cylinders in V configuration. ...
The Honda S2000 is a roadster automobile hand assembled by Honda. ...
BMW M6 The BMW M6 is a high-performance version of the BMW 6-Series automobile, designed by BMW Motorsport. ...
The engine was introduced in two sizes in 1960: The 170 CID (2.8 litre) "LG" (Low-G, referring to the relatively short engine block casting and crankshaft stroke) in the Valiant, and the 225 CID (3.7 litre) "RG" (Raised-G, referring to the relatively tall engine block casting and crankshaft stroke) in midsize Plymouth and Dodge Dart models. In 1960, the engine was referred to by Plymouth division as the "30-D Economy Six" engine, the "30-D" referring to the 30° cylinder block angle. 1960 (MCMLX) was a leap year starting on Friday (link will take you to calendar). ...
The Plymouth Valiant was an automobile manufactured by the Plymouth division of Chrysler Corporation in the United States from 1960 to 1976. ...
Plymouth was a brand of automobile based in the United States, marketed by the Chrysler Corporation from 1928 to 2001. ...
The Dodge Dart was an automobile built by the Dodge Division of the Chrysler Corporation, from 1960-76. ...
Plymouth was a brand of automobile based in the United States, marketed by the Chrysler Corporation from 1928 to 2001. ...
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. Replacement engines were still being built in Mexico as of 2000. In addition, the G-engine was used extensively by worldwide Chrysler divisions and subsidiaries in their locally-produced vehicles. It was also widely purchased by other original equipment manufacturers for installation in commercial vehicles, agricultural and industrial equipment, and boats. 1983 (MCMLXXXIII) was a common year starting on Saturday of the Gregorian calendar. ...
1987 (MCMLXXXVII) was a common year starting on Thursday of the Gregorian calendar. ...
1991 (MCMXCI) was a common year starting on Tuesday of the Gregorian calendar. ...
The worlds oceans as seen from the South Pacific Ocean (from Okeanos, Greek for river, the ancient Greeks noticed that a strong current flowed off Gibraltar, and assumed it was a great river); covers almost three quarters (71%) of the surface of the Earth, and nearly half of the...
The G-engine gained an enviable reputation for reliability and nearly unstoppable durability. The basic engine design incorporates much heavy-duty engineering, in part because the engine was designed from the start to be made of either iron or aluminum: 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 Hemi. Very efficient cooling and lubrication systems, a favorable rod ratio, and an extremely strong forged steel crankshaft (on engines made through mid-1976) all contributed to the engine's apparent indestructibility. In addition, the G-engine also provided better performance than most of its competition in the 1960s and 1970s. By the 1980s, the G-engine had been effectively strangled by continual addition of increasingly-restrictive exhaust emission control devices without concommitant upgrades to the combustion chamber design, piston displacement or induction system, all of which were by that time quite antiquated. G-engine use in passenger cars was rapidly phased out in the mid-1980s as Chrysler Corporation shifted to front wheel drive architecture which made it too hard to easily work on this reliable motor. Early Hemi in a 1957 Chrysler 300C. A Chrysler Hemi engine is one of three different internal combustion engine families from the Chrysler Corporation (or its successor, DaimlerChrysler) that are Hemi engines; in other words, they utilise a hemispherical combustion chamber. ...
Front wheel drive is the most common form of engine/transmission layout used in modern passenger cars, where the engine drives the front wheels. ...
Significant production changes - All G engines used forged steel crankshafts until the middle of model year 1976, when a less costly cast iron crankshaft was introduced. The cast crankshaft uses a different block, different main and connecting rod bearings and different connecting rods.
- The counterbore in the rear flange of the crankshaft was 1¼" diameter until 1967. For 1968, it was enlarged to 1½". This difference has implications when swapping engines and automatic transmissions across this date line.
- All G-engines used solid valve lifters through the 1980 model year, with the exception of a small production test of hydraulic lifters in the 1978 model year. For model year 1981, all North American G-engines received top-fed hydraulic lifters. Retrofitment in both directions is possible but nontrivial.
- Emission control devices and systems, carburetor make and specification, and engine assembly details changed over the years to comply with market requirements and preferences.
- Electronic ignition was made available in North America in 1972, and was made standard equipment in 1973.
- The combustion chamber shape was slightly modified for 1967 to promote more complete combustion and reduce exhaust emission toxicity.
A blacksmiths forge The forge or smithy is the workplace of a smith or a blacksmith. ...
The old steel cable of a colliery winding tower Steel is a metal alloy whose major component is iron, with carbon being the primary alloying material. ...
Cast iron usually refers to grey cast iron, but can mean any of a group of iron-based alloys containing more than 2% carbon (alloys with less carbon are carbon steel by definition). ...
In mechanical engineering, a tappet is a projection which imparts a linear motion to some other component within an assembly. ...
The term induction has more than one meaning in the English language. ...
To meet Wikipedias quality standards, this article or section may require cleanup. ...
Gasoline, as it is known in North America, or petrol, in many Commonwealth countries (sometimes also called motor spirit) is a petroleum-derived liquid mixture consisting primarily of hydrocarbons, used as fuel in internal combustion engines. ...
Configuration Variants
Different Displacements
170 CID The 170 CID (2.8 litre) slant-6 engine was offered in model years 1960 through 1969 in North America, and through 1971 for export markets. The first vehicle to offer the 170 slant-6 was the 1960 Valiant. The engine has a bore of 3.40" (86 mm) and a stroke of 3.125" (79 mm). The "LG" low-deck block was unique to the 170 engine. The Plymouth Valiant was an automobile manufactured by the Plymouth division of Chrysler Corporation in the United States from 1960 to 1976. ...
198 CID The 198 CID (3.2 litre) slant-6 was introduced in the North American market for model year 1970 as a more powerful base-model engine than the previous 170 CID base engine. The increased displacement gave improved base-model vehicle performance and lower manufacturing cost, for it was achieved by installing a crankshaft with 3.64" (92.5mm) stroke into the tall RG block also used with the 225 CID (3.7 litre) version of the engine. In this manner, manufacturing costs were eliminated that had been caused by previously using two different blocks for the two different available sizes of slant-6 engine. The 198 engine was available through the 1974 model year.
225 CID The 225 CID (3.7 litre) Slant-6 used the RG (tall) block with a 3.40" (86mm) bore and a 4.125" (105mm) stroke. This undersquare geometry was a departure from the emerging trend towards oversquare engines, and gave the 225 exceptionally strong low-RPM torque characteristics. The large amount of torque available at low RPMs caused the 225 to find favor not only as a responsive and driveable passenger car engine, but also in pickup and commercial trucks, school buses, motorhomes, forklifts, harvesters, airplane tugs and powerboats, amongst other applications. A piston engine is undersquare or longstroke if its cylinders have a smaller bore (width, diameter) than stroke (length of piston travel). ...
A piston engine is oversquare or shortstroke if its cylinders have a greater bore (width, diameter) than stroke (length of piston travel). ...
Aluminum-block 225 CID Between late model year 1961 and early model year 1963, approximately 52,000 die-cast aluminum RG blocks were produced and installed in passenger cars. These open-deck blocks used integrally-cast high-Nickel iron cylinder liners, and bolt-in iron upper and lower main bearing caps. Internal components (crank, rods, pistons, etc.) were the same as used in the iron engine, and an iron cylinder head was used with a special copper-asbestos gasket. The aluminum block weighs about 80 lb (36 kg) less than the iron RG block.
High Performance Variants Most G-engines were equipped with small-capacity carburetors and exhaust systems adequate for standard passenger car usage at low altitudes, but which tended to hamper maximum available performance at high altitudes, in heavy or race-purpose vehicles and/or where quicker acceleration was desired. To meet the demand for improved responsiveness, modified engine configurations were made available in various markets over the years. The carbureter (American spelling, a. ...
Hyper Pak The Hyper Pak was a parts package made available from 1960 through 1962 at Chrysler Corporation dealer parts counters. The parts were made available to comply with regulations promulgated by the sanctioning bodies for racing events in which Valiants had been entered by factory-backed teams: All parts used had to be "stock" parts, the definition of which meant that they were available through normal factory parts channels. The Hyper Pak consisted of a very-long-ram intake manifold meant to accept a Carter AFB 4-barrel carburetor, the AFB carburetor itself and an appropriate air cleaner, dual (front-3 and rear-3) cast iron exhaust headers, a large-diameter exhaust Y-pipe to connect to these dual cast iron headers, a larger muffler, a 276°-duration camshaft with appropriate valve springs and pushrods, a heavier-duty clutch, a manual choke control, a starter motor modification template and, in the full-race version of the package, high-compression pistons designed to increase the engine's compression ratio to 10.5 from the stock 8.5. The Hyper Pak was recommended for installation only on vehicles equipped with manual transmissions, for the camshaft was of such characteristics that a high idle speed was required to prevent engine stall-out. The Hyper Pak was primarily intended for competition driving, its road manners involving rough idling and poor cold-engine driveability, a high power band and poor fuel economy. But, in competition events, it proved unbeatable. Eight factory-backed Valiants entered the new-for-1960 compact car race and absolutely destroyed the competition; the Valiants came in first through eighth. After a similar performance the following year, the race was dropped; there was no longer any point to it.
Multiple carburetors For the 1965-1968 model years, Chrysler Argentina equipped Valiant GT models with a system of dual 1-barrel carburetors and other engine specification changes. Claimed output was 180BHP, compared to the single-carburetor version of the engine producing 145.
2-barrel carburetion
Export 2bbl setup For the 1967 model year, a 2-barrel carburetor setup was released for export production. This configuration, similar to that found on marine G-engines beginning in 1965, consisted of an iron intake manifold with open-plenum 2bbl carburetor mounting pad, a Carter BBD carburetor, and associated air cleaner, linkage and plumbing changes. Also installed on these export 2bbl engines was a slightly hotter camshaft (244° duration rather than 240°), and a distributor with modified advance curves. This engine, rated at 160BHP, was popular in Central and South America, South Africa, Australia and New Zealand. Driveability characteristics were generally superior to those of the 1bbl engine, but to avoid cutting into sales of the more expensive V8 engine, this 2bbl setup was not offered in the North American market. Of particular note is the automatic choke design found in this export 2bbl setup. Most Chrysler products used remote automatic chokes, with a bimetal coil spring mounted on the exhaust manifold, exposed to exhaust heat and operating a pushrod which rotated the choke lever on the carburetor. The export 2bbl setup used an integral heat-tube style automatic choke: Air heated by the exhaust manifold was routed to a round bakelite housing on the carburetor air horn, which contained a bimetal spring acting directly on the choke lever. thermocouple and Peltier_Seebeck effect. ...
thermocouple and Peltier_Seebeck effect. ...
Super Six By the mid 1970s in the North American market, emission control regulations were reducing engine performance at the same time as safety regulations were making cars heavier. An increase in performance was required for the G-engine, so a 2-barrel setup was released for the 1976 model year. This was not the same as the export 2-barrel package described above; the intake manifold used a throttle-bored plenum rather than an open one, and had provisions for an EGR valve. The carburetor, a Carter BBD similar but not identical to the one used on Chrysler's 318 V8 engine, used a standard Chrysler-style remote automatic choke. A 2¼-inch exhaust headpipe was also provided, as well as 2bbl-specific advance curves in the ignition distributor. This package, called "Super Six" by the marketing division, added between 10 and 15 percent to the engine's horsepower and significantly improved throttle response and driveability while maintaining compliance with emission laws. Exhaust gas recirculation (EGR) was an early and primitive automobile emissions-control device that was used from the late 1960s through the early 1980s. ...
The LA engine (light or low A engine) was an evolution of the small-block Chrysler A engine. ...
Aftermarket Many companies have provided aftermarket performance equipment for the G-engine through the years. A surprisingly wide selection of camshafts, intake manifolds and carburetion setups, ignition components, internal engine parts and accessories are still available.
Applications
Passenger cars, trucks, vans The G- and RG-engines were used extensively in Chrysler Corporation passenger cars, trucks and vans, including: 1990 Chrysler LeBaron convertible Chrysler has used the LeBaron name on a variety of cars over the years. ...
The Dodge Aspen (produced from 1976 to 1980) was a compact car from Chrysler Corporations Dodge division; its rebadged counterpart was the Plymouth Volaré. It was launched as a two-door coupe, a four-door sedan, and a unique-for-the-segment station wagon. ...
1970 Dodge Challenger R/T 1974 Dodge Challenger 2006 Dodge Challenger concept Dodge Challenger was the name of two different automobile models marketed by the Dodge division of the Chrysler Corporation in the 1970s. ...
There have been three entirely different Dodge vehicles bearing the Charger nameplate, but the name has generally denoted a performance model in the Dodge range: 1966–1978 Dodge Charger (B-body) — rear wheel drive muscle car 1983–1987 Dodge Charger (L-body) — front wheel drive compact hatchback 2006–present Dodge...
1967 Dodge Coronet The Coronet was a full-size car from Dodge from the 1950s. ...
The Dodge Dart was an automobile built by the Dodge Division of the Chrysler Corporation, from 1960-76. ...
The Dodge Diplomat was a large car of the 1970s and 1980s from the Chrysler Corporations Dodge brand and practically identical to the Chrysler LeBaron of 1977, the Plymouth Caravelle sold in Canada, and the Plymouth Gran Fury from 1982. ...
The Dodge Lancer was a model of the Dodge Division of the Chrysler Corporation. ...
The Dodge Mirada was a mid-sized coupe available from Dodge from 1980-83 . ...
The Dodge Monaco was a fullsize automobile introduced by the Dodge division of the Chrysler Corporation (now DaimlerChrysler) in 1965. ...
The Dodge Polara was introduced for the 1960 model year as Dodges top-of-the-line full-size car. ...
See also Dodge Ram 50, an unrelated Mitsubishi-produced truck The Ram is a full-size pickup truck from DaimlerChryslers Dodge brand. ...
The Dodge St. ...
The A100 (or Forward Control) line was a family of small trucks produced by Chrysler and sold under the Dodge marque in the 1960s. ...
The Barracuda was a two-door compact/midsize car manufactured by the Plymouth division of the Chrysler Corporation from 1964 through 1974. ...
1959 Plymouth Belvedere Wikimedia Commons has more media related to: Plymouth Belvedere The Plymouth Belvedere was a large American automobile produced from 1951 through 1969. ...
The first Plymouth Duster was a semi-fastback version of the Plymouth Valiant automobile, produced in the US from 1970 to 1976. ...
The Plymouth Fury was an automobile model and series made by the Plymouth Division of the Chrysler Corporation from 1956 to 1989. ...
The Plymouth Satellite was introduced in 1965 as the top model in Plymouths midsize Belvedere line. ...
The Plymouth Valiant was an automobile manufactured by the Plymouth division of Chrysler Corporation in the United States from 1960 to 1976. ...
The Dodge Aspen was a midsize car of the 1970s from Chryslers Dodge brand. ...
External links - SlantSix.org (technical Q&A/upgrade forum)
- AllPar.com (information on the Slant 6)
- SlantSix.com (chat forum)
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