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- A Guide To Mopar V8 Cylinder Head And Block Casting Numbers
This version featured a heavy duty short block with additional webbing to allow for aftermarket installed 4 bolt main bearing caps. The application-specific cylinder heads featured relocated intake pushrod passages with offset rocker arms that allowed the pushrods to be moved away from the intake ports, which could improve airflow if the pushrod-clearance "hump" was ground away from the intake port by the end user.
An aluminum intake manifold mounted three Holley carburetors, and a dual points ignition system was fitted. The combination of rising gasoline prices and insurance company crackdown on high-performance vehicles saw the relatively expensive detuned and phased out.
It remained a high performance engine through , but was de-tuned in with the introduction of low compression 8. It was released in with a two barrel carburetor. The used the large intake port heads with a smaller intake valve of 1. Starting with , the was exclusively used in Dodge trucks and vans.
Some prototypes for the EH1 featured Mopar Performance W2 heads, although the production units had the standard heads.
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Some police package cars came from the factory with a steel crank and h-beam rods. The LA was replaced in by the 5. The last variation of the LA series to be introduced before the Magnum upgrade was the throttle-body fuel injection , roller cam engine.
An in-tank electric pump and reservoir replaced the earlier mechanical camshaft- eccentric driven pump. The valvetrain was upgraded to include hydraulic roller lifters, however cam specs remained essentially unchanged.
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The resulting engine was somewhat improved as to power and efficiency, and the 5. However, with other manufacturers already introducing the superior multi-point fuel injection system, Chrysler Corporation considered a more drastic upgrade program. As the TBI engines were being introduced, the new upgrade program was initiated in the Chrysler engineering department. In , with emissions standards becoming ever more stringent in the United States, Chrysler Corporation released the first of the upgraded engines.
In , Chrysler introduced the first of a series of upgraded versions of the LA Engines. The Chrysler Magnum engines are a series of V6, V8, and V10 powerplants used in a number of Chrysler Corporation motor vehicles, as well as in marine and industrial applications. This family of gasoline-burning engines lasted for over a decade, were installed in vehicles sold across the globe, and were produced in the millions. The cylinder block remained basically the same. It was still a V-shaped, degree design made of cast iron. The crankshaft, located to the bottom of the block by five main bearing caps, was cast nodular iron, and the eight connecting rods were forged steel.
The pistons were cast aluminum, with a hypereutectic design. Coolant passages were located between the cylinders. The gerotor-type oil pump was located at the bottom rear of the engine, and provided oil to both the crankshaft main bearings and the cylinder heads via the lifters and pushrods, as opposed to a drilled passage on LA engines. Chrysler's engineers also redesigned the oil seals on the crankshaft to improve anti-leak seal performance. Gasoline was supplied to the intake manifold through a pair of steel rails that fed eight Bosch-type, top-fed, electronically actuated fuel injectors; there was one injector located in each intake runner.
Fuel pressure was regulated by a vacuum-controlled pressure regulator, located on the return side of the second fuel rail. Excess fuel was thereafter delivered back to the fuel tank.
Later versions had the regulator and filter mounted at the in-tank pump. To support the new fuel system, the intake manifold was of a new design. Known colloquially as the "beer keg" or "kegger" manifold, the part was shaped like half of a beer barrel lying longitudinally atop the center of the V-shaped engine block. The intake runners, which supplied the fuel and air to each cylinder, fed each of the intake ports in the newly designed cylinder heads.
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The bolts that secured the intake manifold to the cylinder heads were installed at a different angle than those on the older LA engine; they threaded in vertically, rather than at the degree angle of the up LA. Air was provided from the air filter intake to the intake manifold by a Holley-designed, aluminum, twin-venturi, mechanically actuated throttle body, which was bolted atop the intake manifold.
Each venturi was progressively bored and had a diameter of 50mm. A steel cable connected the accelerator pedal inside the vehicle to a mechanical linkage at the side of the throttle body, which acted to open the air intake butterfly valves inside the venturis. During idle these butterfly valves were closed, so a bypass port and the IAC valve were used to control the intake of air.
The cylinder heads were another fundamental change of the Magnum engine, being designed to meet stricter requirements in both power and emissions by increasing efficiency. The higher-flowing intake ports stepped up intake flow dramatically in comparison to the original LA heads, and the exhaust ports improved cylinder evacuation as well. Spark plugs were located at the peak of the combustion chambers' wedge, between the exhaust ports; press-in heat shields protected them from the heat of the exhaust manifolds.
Cast iron exhaust manifolds, less restrictive than units found on previous engines, were bolted to the outboard side of each head. The new cylinder heads also featured stud-mounted rocker arms, a change from the shaft-mounted LA arms. This last change was due to the different oiling system of the new engine, as described in the next paragraph. The valvetrain was also updated, although it was still based on a single, center-block-located camshaft pushing on hydraulic lifters and pushrods, one for each rocker arm. However, the cast nodular iron camshaft was of the "roller" type, with each lobe acting upon a hydraulic lifter with a roller bearing on the bottom; this made for a quieter, cooler-running valvetrain, but also allowed for a more aggressive valve lift.
Here are handy VIN abbreviations. In example, a 2dr, 4WD, conv, LE would convert to a two door, 4 wheel drive, convertible, limited edition. This site uses functional cookies and external scripts to improve your experience. Which cookies and scripts are used and how they impact your visit is specified on the left. You may change your settings at any time. Your choices will not impact your visit. NOTE: These settings will only apply to the browser and device you are currently using.
A sequential serial number assigned by the vehicle manufacturer.
A Guide To Mopar V8 Cylinder Head And Block Casting Numbers
Manual Seat Belts. Automatic Seat Belts. Active Restraint,. Passenger Air Bag. Passenger Manual Seat Belt. Passenger Automatic Seat Belt. Concorde Intrepid. Note: Since these new features may change, break or disappear, we do not recommend using these features in a production setting. Click Save. Outside of North America, the reporting requirements are less strict and information can be a little more difficult to come by.
When asked about the my engine size for my dodge b 1 ton van my choice was v8 vin 1 or v8 vin w. What is vin w and how do I know what one is mine? My vin starts with a 2. Your email is never published nor shared. Melanie Serr.
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