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5.2L Magnum V8 Explained

Chrysler's Magnum Series engine is, more or less, the second generation of the LA-series small block. In early form the Magnum engine was used exclusively in Dodge trucks such as the Dakota, Ram, Durango and Ram Van. As quickly as it came out, the Jeep Grand Cherokee also got them as an option. The production run of the Magnum engine series was from 1992-2003. Aftermarket support for the Magnum series has grown over the years and with proper maintenance, they will last forever.

The first of the Magnum series came in 1992 which was the 5.2L Magnum V8. For its inaugural two years the output was 230hp and 300 ft/lbs. In subsequent years, horsepower was 220 and torque was 290, mainly due to a slight downsizing of the exhuast manifold outlet.

Displacement= 5.2 Liters / 318 cubic inches

Bore x Stroke= 3.91" x 3.31"

Compression Ratio= 9.1:1

Firing Order= 1-8-4-3-6-5-7-2

Fuel Induction= Multi-point Fuel Injection (MPFI)

Valvetrain Arrangement=
single in-block camshaft
16 valves total

Stock Camshaft Specs=
253 degrees duration intake / 266 degrees duration exhaust
.387" lift intake / .403" lift exhaust

Factory Availability=
'92-'00 Dodge Dakota
'98-'00 Dodge Durango
'92-'01 Dodge Ram 1500
'92-'01 Dodge Ram 2500
'92-'93 Dodge Ramcharger
'92-'03 Dodge Ram Van 1500
'92-'03 Dodge Ram Van 2500
'92-'03 Dodge Ram Wagon 1500
'92-'03 Dodge Ram Wagon 2500
'93-'98 Jeep Grand Cherokee

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