TheSuperchips Flashpaq F5 Performance Tuner part # SU3874 which is a fit for a 1998 Jeep Grand Cherokee with 5.9 Magnum Engine will add up to 47 horsepower and 59 ft. lbs of torque. The headers and cold air intake will then add additional horsepower and torque as well. This however will be independent of the tuner. OtherGrand Cherokees can be fitted with one of four engines ranging from a 3.7-liter, 210-hp V-6 up to a 330-hp, 5.7-liter Hemi V-8. Verdict. The Grand Cherokee is a capable SUV—but it isn’t Withnearly 70 cubic feet of cargo space, the Grand Cherokee is useful for hauling whatever a family may need. A wide range of engines is available. The 5.7-liter Hemi V8 is updated for 2009, increasing from 330 to 357 horsepower. The Hemi is particularly good for towing or driving at higher elevations. The high-performance SRT8 The2009 Grand Cherokee offers several engine options, from a base 3.7-liter V6 to the SRT8's 6.1-liter Hemi V8 and even a 3.0-liter diesel V6 option. Reviewers found power more than adequate, except in the case of the sluggish base engine. According to the EPA, the most efficient Grand Cherokee, the two-wheel drive with the V6 engine, achieves TheDodge 5.7L HEMI engine is also commonly referred to as the 345 HEMI in honor of its 345 cubic inch displacement. It’s a long-running pushrod engine that debuted with 345 horsepower in the 2003 Researchthe 2009 Jeep Grand Cherokee at find specs, pricing, MPG, safety data, photos, videos, reviews and local inventory. Redesigned 5.7-liter Hemi V-8; 2005 Jeep Grand 2005Jeep Grand Cherokee 6.4L (The beast) (Fastest lifted WK) The Replaced with 2021 Tesla Model S Plaid with 1020 hp and 1050 lb. ft. of torque, 9.30 at 148 mph quarter mile in Plaid Mode. Save Share. Reply Quote. greenwayer Discussion starter there is a thread on another Jeep forum, dealing with quite a few Hemi stalling/misfire Specsdatasheet with technical data and performance data plus an analysis of the direct market competition of Jeep Grand Cherokee 5.7 V8 Hemi Limited Quadra-Drive II in 2007, the model with 5-door sport-utility wagon body and V-8 5654 cm3 / 345.6 cui, 240 kW / 326 PS / 322 hp (ECE) of power, 500 Nm / 369 lb-ft of torque, 5-speed automatic Electronic EngineOptions, Horsepower, and Acceleration. Base engine: 3.6-liter V6 with 290 horsepower and 257 pound-feet of torque. Available powertrains: 5.7-liter V8 engine with 357 horsepower and 390 pound-feet of torque. turbocharged 2.0-liter four-cylinder engine and an electric motor with a combined 375 horsepower and 470 pound-feet of torque. Readabout the 2005 Jeep Grand Cherokee only at truckinweb.com, the official website of Truckin' Magazine. In the Grand, the Hemi boasts 330 hp at 5,000 rpm and a muscular 375 lb-ft of torque Sac14Ez.