Cadillac was the first automobile maker to mass produce a V8 engine. The company has produced eight generations of V8s since 1914, and today is the only General Motors division to retain its own V8 design. Cadillac is a brand of luxury automobile, part of the General Motors corporation, produced and mostly sold in the USA; outside of North America, they have been less successful. ... Car redirects here. ... The Liberty V8 aircraft engine clearly shows the configuration A V8 engine is a V engine with eight cylinders. ... General Motors Corporation (NYSE: GM), also known as GM, is an American automobile maker with worldwide operations and brands including Buick, Cadillac, Chevrolet, GMC, Holden, Hummer, Opel, Pontiac, Saturn, Saab and Vauxhall. ...

L-Head

The Type 51 was the first Cadillac V8. Introduced in 1914, it was the standard engine for 1915 Cadillac models. It was a 90° design with an L-head (sidevalve) configuration and was water cooled. Bore was 3.125 in and stroke was 5.125 in, for a total of 314 in³ of displacement. Output was 70 hp (52 kW). It has been suggested that this article or section be merged with pushrod engine. ... Watercooling is a method of heat removal from components. ...

The engine was refined for 1923 with a new split crankshaft that introduced the (now standard) 90° offset for each pair of cylinders. Power was up to 83.5 hp (62 kW). Crankshaft (red), pistons (gray) in their cylinders (blue), and flywheel (black) Continental engine marine crankshafts, 1942 Components of a typical, four stroke cycle, DOHC piston engine. ...

The L-Head was on the Ward's 10 Best Engines of the 20th century list. Wards 10 Best Engines is an annual list of the ten best U.S. automobile engines selected by Wards AutoWorld magazine. ...

L-Head applications:

• Cadillac Type 51
• Cadillac Type 53
• Cadillac Type 55
• Cadillac Type 57
• Cadillac Type 59
• Cadillac Type 61
• Cadillac V-63
• Cadillac Series 341

Cadillac created a new V8, the 341, for 1928. It was a 341 in³ engine and produced 90 hp (67 kW). The same year saw the introduction of the synchromesh transmission. This engine was used in the Series 341 and 341B cars of 1928 and 1929. The Cadillac Type 51 was a large, luxurious automobile introduced in September 1914. ... The Cadillac Type 51 was a large, luxurious automobile introduced in September 1914. ... The Cadillac Type 51 was a large, luxurious automobile introduced in September 1914. ... The Cadillac Type 51 was a large, luxurious automobile introduced in September 1914. ... The Cadillac Type 51 was a large, luxurious automobile introduced in September 1914. ... The Cadillac Type 51 was a large, luxurious automobile introduced in September 1914. ... This article does not cite its references or sources. ... Synchromesh is the term used to describe a manual transmission in which gears are brought to the same speed during shifting by a synchronizer. ...

From 1930 through 1935, Cadillac produced a version with an increased displacement of 353 in³ (5.8 L). This used a 3.38 in (85.7 mm) bore and 4.94 in (125.4 mm) stroke. This engine was used in the Series 353/355/355B/355C/355D and Series 10.

Monobloc

A 322 in³ (5.3 L) "monobloc" engine was used in 1936's Series 60. It was designed to be the company's next-generation powerplant at reduced cost from the 353 and Cadillac V12. The monobloc's cylinder heads were cast as one unit with the engine block, and it used hydraulic valve lifters for durability. This design allowed the creation of the mid-priced Series 60 line. The Cadillac Series 60 was the companys mid-priced vehicle line when it appeared in 1936. ... Cadillac produced two of only three production V16 engine models in history. ...

Bore was 3.375 in (85.7 mm) and stroke was 4.5 in (114.3 mm). This engine was modified with a 3.5 in (88.9 mm) bore for the 1936-1948 346 in³ (5.7 L) engine. This was used in the Series 60/60S/61/62/63/65/67 and 70/72/75. It was also used in tanks in World War II. The Cadillac Series 60 was the companys mid-priced vehicle line when it appeared in 1936. ... The Series 70 (models 70 and 75) was Cadillacs full-size V8-powered car from the 1930s through 1950s. ... Combatants Allied powers: China France Great Britain Soviet Union United States and others Axis powers: Germany Italy Japan and others Commanders Chiang Kai-shek Charles de Gaulle Winston Churchill Joseph Stalin Franklin Roosevelt Adolf Hitler Benito Mussolini Hideki Tōjō Casualties Military dead: 17,000,000 Civilian dead: 33,000...

LaSalle

In 1937, the new Monobloc Flathead gained 24 cubic inches in Cadillac V-8 models to 346 in³, while the LaSalle Straight-8 of 1934–1936 was replaced with the 1936 smaller 322 in³ version at 125 hp (93 kW). In 1941, the LaSalle nameplate was phased out along with the 322 in³, and Cadillacs, all 346cid powered, were available with the new Hydramatic automatic transmission which debuted in Oldsmobile the previous year. These engines were produced through 1948. ... Flathead could refer to: Fishes in the family Platycephalidae. ... For other uses, see Cadillac (disambiguation). ... The Liberty V8 aircraft engine clearly shows the configuration :See also V8 (beverage) A V8 engine is a V engine with eight cylinders. ... 1936 LaSalle 5019 - see additional photos below For other uses of the name, see the LaSalle/La Salle disambiguation page. ... 1936 LaSalle 5019 - see additional photos below For other uses of the name, see the LaSalle/La Salle disambiguation page. ... Hydramatic (also known as Hydra-Matic) was an automatic transmission developed by General Motorss Oldsmobile division. ... The automatic gear selector in a Ford Five Hundred vehicle An automatic transmission (commonly abbreviated as AT) is an automobile gearbox that can change gear ratios automatically as the vehicle moves, thus freeing the driver from having to shift gears manually (similar but larger devices are also used for railroad... Oldsmobile is a brand of automobile produced for most of its existence by General Motors. ...

OHV

1962 Cadillac Series 62 390 V8 engine

Image File history File links Download high resolution version (2272x1704, 398 KB) 1962 Cadillac Series 62 Convertible 390 engine Photo by Stephen Foskett File links The following pages link to this file: Cadillac V8 engine ... Image File history File links Download high resolution version (2272x1704, 398 KB) 1962 Cadillac Series 62 Convertible 390 engine Photo by Stephen Foskett File links The following pages link to this file: Cadillac V8 engine ... The Series 62 replaced the mid-sized Series 70 in 1941. ...

331

For 1949, Cadillac and Oldsmobile each produced a new V8 design, Olds at 303 in³ engine Oldsmobile is a brand of automobile produced for most of its existence by General Motors. ... This article does not cite any references or sources. ...

365

Displacement was up to 365 in³ for 1956, and the 1958 Eldorado 3-2bbl version produced 335 hp (250 kW).

390

A longer stroke pushed displacement to 390 in³ for 1959, yielding 325 hp (242 kW), while the Eldorado six-pack reached 345 hp (257 kW).

Redesigned OHV

For the 1963 model year Cadillac updated their V8 engine, modernizing the tooling used in the production line while optimizing the engine's design. Although it shared the same layout and architecture with the 1949-vintage engine, the revised engine had shorter connecting rods and was one inch (25 mm) lower, 4 inches (102 mm) narrower, and 1¼ in (32 mm) shorter. The accessories (water pump, power steering pump, distributor) mounted on a die-cast aluminum housing at the front of the engine for improved accessibility. An alternator replaced the former generator. The crankshaft was cored out to make it both lighter and stronger. The revised engine was 52 lb (24 kg) lighter than its predecessor, for a total dry weight of 595 lb (270 kg). piston (top) and connecting rod from typical automotive engine (scale is in centimetres) Components of a typical, four stroke cycle, DOHC piston engine. ... Power steering is a system for reducing the steering effort on cars by using an external power source to assist in turning the wheels. ... Distributor cap. ... Casting is a process by which a material is introduced into a mold while it is liquid, allowed to solidify in the shape inside the mold, and then removed producing a fabricated object, part, or casing. ... Aluminum is a soft and lightweight metal with a dull silvery appearance, due to a thin layer of oxidation that forms quickly when it is exposed to air. ... Early 20th century Alternator made in Budapest, Hungary, in the power generating hall of a hydroelectric station. ... This article is about machines that produce electricity. ... Crankshaft (red), pistons (gray) in their cylinders (blue), and flywheel (black) Continental engine marine crankshafts, 1942 Components of a typical, four stroke cycle, DOHC piston engine. ...

390

For 1963 the revised engine shared the same 4.00 in (101.6 mm) bore and 3.875 (94.4 mm) stroke of its predecessor, for an unchanged displacement of 390 in³ (6.4 L). Power was unchanged at 325 hp (242 kW), as was torque at 430 ft·lbf (583 N·m).

429

For 1964 the engine was bored to 4.13 in (104.9 mm) and stroked to 4.00 (101.6 mm), raising displacement to 429 in³ (7.0 L). Power rose to 340 hp (254 kW) and torque to 480 ft·lbf (650 N·m). The 429 was used through the 1967 model year.

World's largest

Although the modernized engine was compact and light for its displacement and output, 429 in³ represented the limit of the original architecture's expansion, and it had been surpassed by Chrysler's 440 and Lincoln's 462. As a result Cadillac introduced an all-new engine for 1968. The Chrysler Corporation was a United States-based automobile manufacturer that existed independently from 1925–1998. ... The RB engine is a big-block V8 engine from Chrysler. ... Lincoln is an American luxury automobile brand, operated under the Ford Motor Company. ... Ford developed the MEL (Mercury-Edsel-Lincoln) engine series for use in their line of Mercury models from 1958 through 1967. ...

472

At introduction, the new engine had a 4.30 in (109.2 mm) bore and a 4.06 in (103.1 mm) stroke for a displacement of 472 in³ (7.7 L). It delivered 375 hp (280 kW) @ 4400 rpm, and a massive 525  ft·lbf (712 N·m) torque, produced at just 3000 rpm. The new engine was about 80 lb (36 kg) heavier than its predecessor. It was used through 1974.

500

For 1970 Cadillac stroked the V8 to 4.304 in (109.3 mm), increasing total displacement on the engine up to a full 500 in³ (8.2 L). At introduction it was rated at 400 horsepower (298 kW), SAE gross, and 550 ft·lbf (750 N•m) of torque. For 1971 compression was reduced from 10:1 to 8.5:1, the lowered compression ratio dropped the 500-cubic-incher's output from 400 to 365 hp (gross) or 235 hp (175 kW) in the new SAE ratings. By 1976, its final year, it had fallen to 190 hp (142 kW). However, a new Bendix electronic fuel injection system was offered as an option, and it pumped up output to 215 hp (160 kW). In 1972, Cadillac changed the horsepower rating from gross--measured at the flywheel with open exhaust and no accessories--to net--measured at the flywheel with full accessories and restrictive exhaust--which would account for the horsepower drop in the chart. Despite the large differences in horsepower ratings, all years from 71-76 made roughly the same power.

The 500 was exclusive to the Eldorado until 1975 where the powerplant was available in all Cadillacs except for the Seville, which was powered by a fuel-injected Oldsmobile 350.

General Engine Specifications Chart

Downsized OHV

The market of the 1970s forced Cadillac to downsize its vehicles and engines. While the Cadillac Seville used a 350 in³ (5.7 L) Oldsmobile V8 engine, Cadillac also began work on smaller proprietary engines. The Cadillac Seville was a luxury car manufactured by the Cadillac division of American automaker General Motors. ... This article does not cite any references or sources. ...

425

In 1977 Cadillac introduced a new 425 in³ (7.0 L) V8, based on the architecture of the 472, but with a smaller, 4.08 in (103.6 mm) bore and 4.06 in (103.2 mm) stroke. The new engine was also 100 lb (45 kg) lighter.

The 425 was offered in L33 form, with a four-barrel carburetor, producing 180 hp (134 kW) @ 4000 rpm and 320 ft·lbf (434 N·m) of torque at 2000 rpm, and L35 with electronic fuel injection for 195 hp (145 kW); torque was the same, but peaked at 2400 rpm. // Fuel injection is a system of fuel delivery for mixture with air in an internal combustion engine. ...

The 425 was used through 1979 on all Cadillacs except the Seville.

368 and V8-6-4

In 1980 the 425 was replaced with the L61, which was the same basic engine de-bored to 3.80 in (96.5 mm) for a total displacement of 368 in³ (6.0 L). The reduction in displacement was largely an effort to meet CAFE requirements for fuel economy. Fuel injection (which would be known to GM as throttle-body injection after 1985) was now standard except for Fleetwood Limousines and Commercial Chassis. The Corporate Average Fuel Economy (CAFE) regulations in the United States, first enacted by Congress in 1975,[1] are federal regulations intended to improve the average fuel economy of cars and light trucks (trucks, vans and sport utility vehicles) sold in the US in the wake of the 1973 Arab...

Cadillac refers to the fuel injection system as digital fuel injection; this particular induction system was later adopted by other GM division except Oldsmobile V8s.

Power output dropped to 145 hp (108.2 kW) @ 3600 rpm and torque to 270 ft·lbf (366 N·m) @ 2000 rpm. This engine was standard on all Cadillacs except the redesigned Seville, where it was optional. The Cadillac Seville was a luxury car manufactured by the Cadillac division of American automaker General Motors. ...

For 1981 Cadillac introduced what became the most notorious engine in the company's history, the V8-6-4 (L62). The 368 had not provided a significant improvement in the company's CAFE numbers, so Cadillac and Eaton Corporation devised a cylinder deactivation system that would shut off fuel to two or four cylinders in low-load conditions such as highway cruising, then reactivate them when the throttle was opened. A dashboard "MPG Sentinel" gauge could show the number of cylinders in operation, or instantaneous fuel consumption (in miles per gallon). The L62 produced 140 hp (104 kW) @ 3800 rpm and 265 ft·lbf (359 N·m) @ 1400 rpm. Cadillac hailed the L62 as a technological masterpiece, and made it standard equipment across the whole Cadillac line. This article is about an industrial manufacturer. ... Displacement on Demand is an automobile variable displacement technology from General Motors. ...

While cylinder deactivation would make a comeback some 20 years later (with modernized technology), Cadillac's V8-6-4 proved to have insurmountable teething problems, both mechanically and electronically. The biggest issue was that the engine control computer was simply not fast enough or powerful enough to efficiently manage the number of cylinders in operation, so many of these engines had their variable-cylinder function disabled by dealers, leaving them with permanent eight-cylinder operation. The 368 was dropped for most Cadillac passenger cars after the 1981 model year, although the V8-6-4 remained the standard engine for Fleetwood Limousines and the carb 368 remained in the Commercial Chassis through 1984.

HT-4100

A new engine was introduced for 1982, the HT-4100 (option code LT8). It was a 4100 cc (~250 ci) V8, designed for transverse, front wheel drive applications. It was originally slated for 1983 and a new line of downsized Cadillac sedans. Delays in the downsizing program (shared with Buick and Oldsmobile) postponed the introduction of those models until 1985, and the new V8 was rushed into production for the 1982 model year. A transverse engine is an engine in which the crankshaft is oriented side-to-side relative to the wheels of the vehicle. ... Front wheel drive is the most common form of engine/transmission layout used in modern passenger cars, where the engine drives the front wheels. ... Buick is a brand of automobile built in the United States, Canada, China and in Spain by General Motors Corporation. ... Oldsmobile is a brand of automobile produced for most of its existence by General Motors. ...

Design Features

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HT stood for High Technology. For its time, the engine and its electronic control module (ECM) were quite sophisticated. Despite having a throttle body injection system (as opposed to port fuel injection), the HT4100 used an ECM that for the first time incorporated a detailed on-board computer. Every parameter of engine performance could be displayed on the heater control while the car was being driven. The HT4100 also pioneered other design features that are in common use today: 1) removable cylinder sleeves, 2) high operating temperature for emission control; 3) free circulation of coolant between the block and the heads, and 4) bimetal construction that mounted heat-tolerant cast-iron heads onto a weight-saving aluminum block. The engine had a bore of 3.465 in (88 mm) and stroke of 3.307 in (84 mm), for a total displacement of 4100 ccs (~249 cubic inches). It initially was equipped with throttle-body fuel injection, with output of 135 hp (93 kW) @ 4400 rpm and 190 ft·lbf (258 N·m) of torque at 2000 rpm. Image File history File links Emblem-important. ... Image File history File links Emblem-important. ... // Fuel injection is a system of fuel delivery for mixture with air in an internal combustion engine. ...

In 1982 the HT4100 was the standard engine for the front-wheel-drive Eldorado and Seville. It was also placed in many rear-wheel-drive deVilles, and was available for the Fleetwood. Every full-sized Cadillac weighed in excess of 4000 pounds and carried up to six occupants; it also had air conditioning, a vacuum pump, a power steering pump, an air pump, and a large alternator. Performance suffered because the engine could not produce adequate power to handle the demands placed upon it.

For emission control purposes the HT4100 was set to run at 210 degrees, compared to 180 in earlier engines. This required pressurizing the cooling system to around 14 psi. This engine employed an aluminum cylinder block with a cast iron cylinder head. This caused the coolant to fail due to electrolysis sooner than normal. The resulting electrolysis attacked the cylinder head gasket and the intake manifold gaskets. Failure of either of these gaskets could introduce coolant into the engine oil, starving the crankshaft and main bearings of lubrication. Many engines failed catastrophically very early in their service lives, sometimes at 30,000 miles (48,000 km). Cadillac replaced many of these engines under warranty.

Other Design Flaws

The HT4100 may not have been the most successful engine to sit under the hood of a Cadillac, but potential buyers were no more satisfied with the other two engines available at the time, the V8-6-4 and the Oldsmobile 5.7L Diesel. Kits were sold to retrofit the cars with Chevrolet engines (Buick and Oldsmobile V6s would also fit, but were much harder to install). It is a testimony to the visual appeal of these cars that sales remained strong, exceeding 100,000 in 1984 ^[1]. Cadillac's share of the luxury car market diminished rapidly after 1985^{[citation needed]}.

For 1987 a more powerful version of the 4.1 L engine was introduced in the Cadillac Allante, using a different camshaft profile and roller rocker arms to reduce reciprocating weight, in addition to multiport fuel injection. This engine was rated at 170 hp (127 kW) @ 4300 rpm and 235  ft·lbf (319 N·m) of torque @ 3200 rpm. The 4.1 was superseded by larger-displacement engines, and ceased production after the 1988 model year. The Cadillac Allant was Cadillacs first venture into the luxury roadster market. ... For the fictional characters of the same name, see Camshaft (Transformers). ... rocker arm This page meets Wikipedias criteria for speedy deletion. ... // Fuel injection is a system of fuel delivery for mixture with air in an internal combustion engine. ...

4.5

Although it was an improved and enlarged version of the HT4100, it was never called HT4500 by Cadillac.

Engineering allowed the company to begin increasing displacement and output again. A bored-out (to 92 mm) 4.5 L (273 in³) 4.5 version was introduced in 1988 with 155 hp (116 kW) and throttle body injection. Various versions of this engine were built from this introduction to the end of production in 1992 including a high-output LW2 version with multiport fuel injection which produced 200 hp (149 kW) and 270  ft·lbf (366 N·m) for the Allante. Outside of the Allante, Cadillac introduced a port fuel injected 4.5L V8 engine in 1990 with 180 hp (134 kW) across their car line up. // Fuel injection is a system of fuel delivery for mixture with air in an internal combustion engine. ... The Cadillac Allant was Cadillacs first venture into the luxury roadster market. ...

With the head and intake gasket issues largely resolved, the 4.5L V8 experienced considerably less reliability issues than the 4.1L V8.^{[citation needed]}

L26 4.9

Although an improved and enlarged version of the HT4100, it was never called HT4900 by Cadillac.

A larger version, the L26 4.9, debuted in 1991 at 4.9 L (300 in³) with a square 92 mm bore and stroke. Despite the fact that it had similar output to Allante's 4.5L port fuel injected V-8, the 4.9L engine represented a significant upgrade for the remainder of the Cadillac lineup. Horsepower output was up 20 hp (15 kW) from the previous 1990 4.5L engine and torque was up by 30 lb·ft (41 N·m), to 200 hp and 275 ft-lbs. Both the 4.9 and 4.5 port fuel injected engines required premium fuel.

Despite its rather low horsepower output, owners^[who?] of 4.9L engines are often surprised by the engine's power, due to its wide powerband, and plethora of low end torque. The 4.9L engine produces its maximum horsepower at only 4100 rpms resulting in extremely strong 'off-the-line response'. The optimum performance is within the 0-45 mph range (first gear).

The 4.9 was used throughout the Cadillac line. It was phased out in favor of the newer Cadillac Northstar engine; production ended in 1995. Northstar is Cadillacs name for its DOHC V8 engine. ...

Cadillac use of non-Cadillac V8s

Seville

The first Cadillac use of a non-Cadillac V8 was the 1976 Seville, which used an Oldsmobile 5.7L engine. It featured exclusive to Cadillac fuel injection. It was rated at 180 hp, and the conventional Oldsmobile Rocket 350 had 170 hp. Starting with the second generation Seville, Cadillac powerplants were optioned (L62 and the HT4100); from the third generation (1986), all Sevilles were Cadillac-powered. The Cadillac Seville was a luxury car manufactured by the Cadillac division of American automaker General Motors. ... This article does not cite any references or sources. ...

Fleetwood (RWD)/Deville (RWD)/Brougham (RWD)

From 1982 to 1985, all rear-wheel drive Cadillacs (except for the limousines) could be ordered with the 5.7 L Oldsmobile LF9 Diesel V8. In fact, for most of its life, the 1980-1985 version of Cadillac's Seville came standard with Oldsmobile's V8 diesel, with the gas engine being a no-cost option. Rear-wheel drive (or RWD for short) is a common engine/transmission layout used in automobiles. ... This article does not cite any references or sources. ... This article is about the fuel. ... The Liberty V8 aircraft engine clearly shows the configuration A V8 engine is a V engine with eight cylinders. ...

From 1986 to 1990, the rear-wheel drive Cadillac Brougham used a 5.0 L (307 in³) Oldsmobile carbureted V8 (replacing the Cadillac HT-4100). The Cadillac Brougham was the last rear wheel drive Cadillac in the 1990s. ... This article does not cite any references or sources. ... Bendix-Technico (Stromberg) 1-barrel downdraft carburetor model BXUV-3, with nomenclature A carburetor (North American spelling) or carburettor (Commonwealth spelling), is a device that blends air and fuel for an internal combustion engine. ...

In 1990 a 175 hp (130 kW), fuel-injected 5.7 L (350 in³) Chevrolet small-block V8 became optional when the towing package is selected. // Chevrolets small-block V8 is a famous automobile engine. ...

In 1991 the Oldsmobile 307 was replaced with a 5.0 L (305 in³) fuel-injected Chevrolet V8. // Chevrolets small-block V8 is a famous automobile engine. ...

In 1993 the 180 hp (134 kW) 350 in³ V8 became standard in the newly-renamed Cadillac Fleetwood. The Fleetwood name was used on the top of the Cadillac line since 1927. ...

In 1994 this was replaced with an iron headed Chevrolet LT1 V8 with 260 hp (194 kW), which the Fleetwood would use until it was discontinued at the end of the 1996 model year. The Chevrolet Corvette is a sports car that has been manufactured by Chevrolet since 1953. ... The second-generation Chevrolet Small-Block engine, which uses the LT prefix, was introduced in 1992. ...

With the introduction of the Escalade to the Cadillac lineup, the L31 Vortec 350[1] was used, as it was part of the Chevy truck line which the Escalade was based on. In 2001, the new redesigned Escalade picked up the performance version of the 6.0L LS series engine RPO LQ9. Currently this engine is still in use in Cadillac Escalades. All Escalades are AWD. Beginning in 2007 all Cadillac Escalades are equipped with Generation IV 6.2L engines. This new engine option is shared with the GMC Denali.

CTS-V

The 2003 to 2005 CTS-V's used the previous generation Z06's 400 hp (298 kW) 5.7L LS6 V8. The 2006 and 2007 Cadillac CTS-V uses the 400 hp (298 kW) 6.0L LS2 V8.

Northstar

Cadillac's most technologically advanced engine since the original arrived in 1992, the DOHC Cadillac Northstar engine is documented elsewhere. This engine is the only one at General Motors used in a single marque. Although Oldsmobile, Pontiac, and Buick have borrowed the Northstar architecture for their V8 (and even V6) engines, it was not until the 2005 Pontiac Bonneville that a non-Cadillac used the Northstar name. A double overhead cam (also called a dual overhead cam, DOHC, or twincam) engine is a type of internal combustion engine where the camshafts that operate the intake and exhaust valves are mounted above the cylinders, and where there are separate camshafts for inlet and exhaust valves. ... Northstar is Cadillacs name for its DOHC V8 engine. ... A marque (French for brand and pronounced as mark) is a brand name, most commonly used for automobile brands. ... Oldsmobile is a brand of automobile produced for most of its existence by General Motors. ... This article is about Pontiac automobiles; for the Native American leader, see Chief Pontiac, for other uses see the Pontiac (disambiguation). ... Buick is a brand of automobile built in the United States, Canada, China and in Spain by General Motors Corporation. ... The Pontiac Bonneville is an automobile built by the Pontiac division of General Motors from 1958 to 2005. ...

The Northstar is broken up into different versions depending on model usage and model year.

4.6L

Northstar

The engine was introduced in mid-1992 in the 1993 Cadillac Allanté and continues to be used in most Cadillac models. The original Northstar Allanté also introduced the Northstar System which included traction control, adaptive suspension, and antilock brakes. Early Northstar had no knock sensors, and required premium grade gasoline to run safely. Year 1992 (MCMXCII) was a leap year starting on Wednesday (link will display full 1992 Gregorian calendar). ... Year 1993 (MCMXCIII) was a common year starting on Friday (link will display full 1993 Gregorian calendar). ... The Cadillac Allanté was Cadillacs first venture into the luxury roadster market and was sold from 1987 through 1993. ... The Northstar System was Cadillacs trademarked name for a package of automobile performance features. ... Traction control systems, on current production vehicles, are typically (but not necessarily) electro-hydraulic systems designed to prevent loss of traction (and therefore the control of the vehicle) when excessive throttle or steering is applied by the driver. ... An anti-lock braking system (commonly known as ABS, from the German name Antiblockiersystem given to it by its inventors at Bosch) is a system on motor vehicles which prevents the wheels from locking while braking. ...

The engine received a forged steel crankshaft in 2003. Cadillac had been planning to introduce a V12 Northstar this decade, for use in the Escalade, but the added production expense and more stringent fleet CAFE standards had killed the program. A V12 is an internal combustion engine with 12 cylinders in V configuration. ... This article or section does not adequately cite its references or sources. ...

Most Northstar engines produce 275 to 315 hp (205 to 235 kW). The engines were revised for 2000 with coil-on-plug ignition and roller follower valvegear for improved fuel economy and reduced emissions. Though power output did not change, this update eliminated the need for premium fuel. Year 2000 (MM) was a leap year starting on Saturday. ... Fuel efficiency, sometimes also referred to as fuel economy and commonly gas mileage in the United States, is a numeric measure often used to describe the amount of fuel consumed with regard to the distance travelled in a transportation vehicle, such as an automobile. ...

The Northstar was sold exclusively by Cadillac for over a decade before being introduced in the 2004 Pontiac Bonneville and 2006 Buick Lucerne. In 2008 the Lucerne is available with the option of the 292 hp Northstar NHP by ordering the Super model. Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... Year 2006 (MMVI) was a common year starting on Sunday of the Gregorian calendar. ... The Buick Lucerne is a full-size car sold by the Buick division of General Motors that replaces the Park Avenue and the LeSabre in 2006. ...

All but the supercharged Northstar displace 4.6 L (4565 cc/279 in³) with a 93 mm (3.66 in) bore and 84 mm (3.31 in) stroke. For better head gasket sealing between cylinders, the supercharged version is de-bored to 91 mm (3.6 in) for a total displacement of 4.4 L (4371 cc/266 in³). The block is said to be capable of expansion up to 5.4 L, though no such engine has been produced. For other meanings, see supercharger (disambiguation) A supercharger (sometimes called a blower), a positive displacement or centrifugal pump, is a gas compressor used to pump air into the cylinders of an internal combustion engine. ...

The Northstar was on the Ward's 10 Best Engines list for 1995, 1996, and 1997. Wards 10 Best Engines is an annual list of the ten best U.S. automobile engines selected by Wards AutoWorld magazine. ...

L37

The L37 was the original Northstar. It is tuned for responsiveness and power, while the later LD8 is designed for more sedate use. The L37 code has been used on all high-output transverse Northstars, even as the exact engine specifications evolved. Compression ratio for the L37 is 10.0:1, shared with the LD8. A transverse engine is an engine in which the crankshaft is oriented side-to-side relative to the wheels of the vehicle. ...

The original L37 was specified at 290 hp (216 kW), but 1993 production examples were rated at 295 hp (220 kW). The engine topped out at 300 hp (224 kW) from 1996 through 2004 on the STS, DTS and ETC models, making these some of the most powerful front wheel drive cars ever built, the most powerful title still belonging to the 1970 Cadillac Eldorado with 400 hp (500 in³, 8.2 L) (although the latter's rating is in the older SAE gross horsepower system, figured without accessories or muffler, where the current engine outputs are as-installed, net ratings). For 2005 the high output Northstar became Northstar NHP, and was down rated to 290 hp due to industry wide changes in the procedures used to certify horsepower. In 2006, the updated DTS "Performance Package" model got a slight bump to 292hp. Year 1993 (MCMXCIII) was a common year starting on Friday (link will display full 1993 Gregorian calendar). ... Year 1996 (MCMXCVI) was a leap year starting on Monday (link will display full 1996 Gregorian calendar). ... Year 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... The Cadillac Seville was a luxury car manufactured by the Cadillac division of American automaker General Motors. ... It has been suggested that Cadillac Coupe DeVille be merged into this article or section. ... The Eldorado model was part of the Cadillac line from 1953 to 2002. ... The Eldorado model was part of the Cadillac line from 1953 to 2002. ... SAE may refer to: Soviet Antarctic Expeditions Scientific Audio Electronics Society of Automotive Engineers SAE Institute (formerly the School of Audio Engineering) Sigma Alpha Epsilon fraternity Stichting Academisch Erfgoed Standard American Equivalent (in relation to tool sizing see Standard and Imperial; different from Metric tool sizing but pertaining to same... This article is about a unit of measurement. ...

Vehicles using the L37 include:

The Cadillac Allanté was Cadillacs first venture into the luxury roadster market and was sold from 1987 through 1993. ... The Eldorado model was part of the Cadillac line from 1953 to 2002. ... The Eldorado model was part of the Cadillac line from 1953 to 2002. ... The Cadillac Seville was a luxury car manufactured by the Cadillac division of American automaker General Motors. ... The Cadillac Seville was a luxury car manufactured by the Cadillac division of American automaker General Motors. ... It has been suggested that Cadillac Coupe DeVille be merged into this article or section. ... It has been suggested that Cadillac Coupe DeVille be merged into this article or section. ... The Cadillac DTS (DeVille Touring Sedan) replaces the Cadillac DeVille as that carmakers largest luxury car for the 2006 model year. ... The Buick Lucerne is a full-size car sold by the Buick division of General Motors that replaces the Park Avenue and the LeSabre in 2006. ...

LD8

The LD8 is a transverse V8 for front-wheel drive cars. Introduced in 1994, it is designed to provide more torque than the high-revving L37. The LD8 code has been used on all torque-tuned transverse Northstars, even as the exact engine specifications evolved. Compression ratio is currently 10.0:1. A transverse engine is an engine in which the crankshaft is oriented side-to-side relative to the wheels of the vehicle. ... The Liberty V8 aircraft engine clearly shows the configuration A V8 engine is a V engine with eight cylinders. ... Front-wheel drive is the most common form of engine/transmission layout used in modern passenger cars, where the engine drives the front wheels. ... Year 1994 (MCMXCIV) The year 1994 was designated as the International Year of the Family and the International Year of the Sport and the Olympic Ideal by the United Nations. ... A transverse engine is an engine in which the crankshaft is oriented side-to-side relative to the wheels of the vehicle. ...

The 1998 revision is quieter (thanks to hydraulic engine mounts) and performs better (thanks to a tuned intake system) than previous Northstars.

Most LD8 Northstars are rated at 275 hp (205 kW) and 300 ft·lbf (407 N·m).

The Eldorado model was part of the Cadillac line from 1953 to 2002. ... The Eldorado model was part of the Cadillac line from 1953 to 2002. ... The Eldorado model was part of the Cadillac line from 1953 to 2002. ... The Cadillac Seville was a luxury car manufactured by the Cadillac division of American automaker General Motors. ... The Cadillac Seville was a luxury car manufactured by the Cadillac division of American automaker General Motors. ... The Cadillac Seville was a luxury car manufactured by the Cadillac division of American automaker General Motors. ... It has been suggested that Cadillac Coupe DeVille be merged into this article or section. ... It has been suggested that Cadillac Coupe DeVille be merged into this article or section. ... It has been suggested that Cadillac Coupe DeVille be merged into this article or section. ... It has been suggested that Cadillac Coupe DeVille be merged into this article or section. ... The Cadillac DTS (DeVille Touring Sedan) replaces the Cadillac DeVille as that carmakers largest luxury car for the 2006 model year. ... The Pontiac Bonneville is an automobile built by the Pontiac division of General Motors from 1958 to 2005. ... The Buick Lucerne is a full-size car sold by the Buick division of General Motors that replaces the Park Avenue and the LeSabre in 2006. ...

LH2

The Northstar was designed originally for transverse front-wheel drive applications. It was modified substantially in 2004 for longitudinal rear- and all-wheel drive use in the SRX and XLR, as well as receiving variable valve timing. The RWD (LH2) Northstar produces 315–320 hp (235–239 kW) and 310–315 ft·lbf (420–427 N·m). An increased compression ratio of 10.5:1 enables most of the increase in power from the L37 and LD8 Northstars. Front-wheel drive is the most common form of engine/transmission layout used in modern passenger cars, where the engine drives the front wheels. ... In automotive engineering, a longitudinal engine, also sometimes known as a north-south engine, is an internal combustion engine in which the crankshaft is oriented along the long axis of the vehicle, front to back. ... Rear-wheel drive (or RWD for short) is a common engine/transmission layout used in automobiles. ... Four wheel drive or 4x4, is a type of four wheeled vehicle drivetrain configuration that enables all four wheels to receive power from the engine simultaneously in order to provide maximum traction. ... The Cadillac SRX is a mid-size luxury crossover SUV produced by the Cadillac division of American automaker General Motors since the 2004 model year. ... XLR shown with the top up The XLR is a luxury roadster sold by the Cadillac division of General Motors and is assembled in Bowling Green, Kentucky. ...

The Cadillac SRX is a mid-size luxury crossover SUV produced by the Cadillac division of American automaker General Motors since the 2004 model year. ... XLR shown with the top up The XLR is a luxury roadster sold by the Cadillac division of General Motors and is assembled in Bowling Green, Kentucky. ... The STS (Seville Touring Sedan) is a luxury car sold by Cadillac. ...

Supercharged LC3

A 4.4 L (4371 cc/266 in³) supercharged Northstar is used in the 2006 Cadillac STS-V and Cadillac XLR-V. The bore was reduced for increased strength and improved head gasket sealing. Variable valve timing is used on both the intake and exhaust sides. The STS-V engine produces 469 hp (350 kW) at 6400 rpm and 439 ft·lbf (595 N·m) at 3900 rpm with 9.0:1 compression and the XLR-V engine produces 443 hp (330 kW) at 6400 rpm and 414 ft·lbf (561 N·m) at 3900 rpm . For other meanings, see supercharger (disambiguation) A supercharger (sometimes called a blower), a positive displacement or centrifugal pump, is a gas compressor used to pump air into the cylinders of an internal combustion engine. ... The STS (Seville Touring Sedan) is a luxury car sold by Cadillac. ... XLR shown with the top up The XLR is a luxury roadster sold by the Cadillac division of General Motors and is assembled in Bowling Green, Kentucky. ... Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. ...

The STS (Seville Touring Sedan) is a luxury car sold by Cadillac. ... XLR shown with the top up The XLR is a luxury roadster sold by the Cadillac division of General Motors and is assembled in Bowling Green, Kentucky. ...

4.4L

The 4.4L versions were all supercharged, exclusive to Cadillac's V-series. The 2006 - Present STS-V engine is certified by the SAE to produce 469 hp (350 kW) and 439 ft·lbf (595 N·m).

The 2006 - 2008 XLR-V uses the same supercharged Northstar V8 as the STS-V, though output is down somewhat due to design chages made to accommodate the model's more limited underhood space. For the XLR-V, the engine is certified by the SAE to produce 443 hp (330 kW) and 414 ft·lbf (561 N·m). The supercharger and four intercoolers are built into the intake manifold.

The bores were reduced in size to increase block strength, increasing the safety margin under boost.

4.0L

This is the Oldsmobile Aurora variant, never installed in a Cadillac. The Aurora's cylinder heads had lower flow characteristics to match the engine's reduced size. The 4.0L engine produced 250 hp.

See also

From the 1950s through the 1970s, each GM division had its own V8 engine family. Some were shared among other divisions, but each respective design was engineered and developed by its own division:

• Buick V8 engine
• Chevrolet Small-Block engine
• Chevrolet Big-Block engine
• Oldsmobile V8 engine
• Pontiac V8 engine

GM later standardized on the later generations of the Chevrolet design: Like its sister General Motors divisions, Buick produced its own family of V8 engines to replace its straight-8 engines. ... // Chevrolets small-block V8 is a famous automobile engine. ... Big block is the term used to describe the large displacement V8 engines that were developed in the USA during the 1950s and 1960s. ... This article does not cite any references or sources. ... Promotional image for Pontiacs all new 287 in³, dubbed the Strato-Streak From 1955 to 1981 the Pontiac Division of General Motors manufactured its own, unique V8 engines. ...

• GM LT engine — Generation II small-block
• GM LS engine — Generation III/IV small-block
• List of GM engines

The second-generation Chevrolet Small-Block engine, which uses the LT prefix, was introduced in 1992. ... The LS is Generation III and Generation IV, the latest evolution of General Motors line of small-block V8 engines. ... This page chronicles the many automobile engines that General Motors has used in its various marques. ...

References

1. ^ http://en.wikipedia.org/wiki/Cadillac_Eldorado

External links

• The Caddy Engine Guide
• Maximum Torque Specialties - Cadillac Forum
• Cadillac Power - Cadillac Forum; dedicated primarily to 472/500, but also 368/425 Cadillac engines.
• Cadillac Owners - Cadillac Forum