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4.7L Corsair Powertech V8 Explained

Chrysler's Powertech engine series is sometimes called the 'next generation' of the Magnum series. In fact, the Dodge marketing folks still used the 'Magnum' name for a time when describing the Powertech. The big pluses that the Powertech has over the Magnum are two spark plugs per cylinder, aluminum cylinder heads, plastic intake manifold, and single overhead camshafts. The Powertech could be found only in trucks. These were the Dodge Dakota, Durango, Nitro, and Ram, Jeep's Grand Cherokee, Liberty, and Commander, plus the Chrysler Aspen, and Mitsubishi Raider. The production run for the Powertech is from 1999-2013. There's very little aftermarket support for the 'next generation' engine, but with proper maintenance, like the Magnum, these will last forever.

The final interpretation of this engine family is the 4.7L Corsair Powertech V8. The 'Corsair' name wasn't really used anywhere in marketing or on the engine itself, but this term is what Chrysler used internally for the 2008-2013 'last call' version, and much improved it was. The twisting power topped all previous versions at 290 hp and 320 torque when it debuted in the Dakota. These numbers steadily improved over the next few years to a maximum of 302hp/329tq in the Dakota, 303hp/330tq in the Aspen/Durango, 305hp/334tq in the Grand Cherokee/Commander, and lastly, 310hp/329tq in the Ram. The Corsair Powertech used similar tricks as in the 4.7 HO such as better camshafts, pistons, cylinder heads and intake manifold, though these components were even better yet,

Displacement= 4.7 Liters / 287 cubic inches

Bore x Stroke= 3.66" x 3.405"

Compression Ratio= 9.8:1

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

Fuel Induction= Sequential Multi-port Fuel Injection (SMFI)

Valvetain Arrangement=
Single Overhead Camshafts
16 valves in total

Stock Camshaft Specs=
244 degrees duration intake / 254 degrees duration exhaust
.509" lift intake / .472" lift exhaust

Factory Availability=
'08-'09 Chrysler Aspen
'08-'11 Dodge Dakota
'08-'09 Dodge Durango
'08-'10 Dodge Ram 1500
'08-'09 Jeep Grand Cherokee
'08-'09 Jeep Commander
'11-'13 Ram 1500

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