1997 Jeep Grand Cherokee Laredo Sport Utility 4-door 4.0l on 2040-cars

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Watch this 650-hp Hennessey Jeep Grand Cherokee go from 0-60 in 3.9 seconds

Hennessey Performance Engineering has created an HPE650 package for the Jeep Grand Cherokee SRT fitted with the 6.4-liter Hemi engine. When it leaves the showroom floor it has 470 horsepower and gets from 0-60 miles per hour in 4.8 seconds. When it leaves Hennessey's garage floor after the upgrade it has 650 horsepower - 530 hp at the wheels, according to Hennessey - and gets to 60 mph in 3.9 seconds on its way to running the quarter-mile in 12.6 seconds.
There's more than just a Roots-type supercharger bolt-on, with ported cylinder heads and high-flow headers among the many changes made to the engine. You can watch this pre-2014 facelift silver model prove its spec sheet on the drag strip in the video below.

Jeep 'trailer hitch' recall repair rates lag amidst reports of new death

The problem with exploding fuel tanks in the 1993-1998 Jeep Grand Cherokee and 2002-2007 Jeep Liberty in some rear collisions continues to be a problem for FCA US, formerly Chrysler. The campaign to fix the utility vehicles was first announced in June 2013 after 51 claimed fatalities, and the fixes reportedly began in January 2014. However, there continue to be new deaths blaming the problem in unrepaired models, according to The Detroit News, citing data from the Center for Auto Safety. The automaker initially refused NHTSA's pressuring to conduct a recall because the models met applicable crash standards when they were manufactured, but eventually, there was a compromise to inspect and fix about 1.56 million Jeeps. With the fuel tank located between the rear axle and bumper, the unusual fix was to install a trailer hitch for extra protection. The National Highway Traffic Safety Administration later agreed that the change would provide added safety in lower to medium speed crashes, but not high-speed crashes. The most recent fatality, according to The Detroit News, occurred on a Michigan freeway in November 2014 when a pregnant woman in a 2003 Liberty was rear-ended when traffic slowed. Her Jeep impacted the vehicle in front, rolled over and a fire resulted. The family reportedly plans to file a lawsuit against FCA. At issue has been the rate at which the vehicles are being fixed. In July 2014, the automaker estimated it could have all of the vehicles repaired by March 2015 thanks to additional hitch supplies. But by November, NHTSA claimed that only three percent of the recalled models had been fixed. FCA says it continues to work to notify owners, though. According to Chrysler spokesperson Eric Mayne to Autoblog, "We are processing approximately 1,200 vehicles per day. Every owner who schedules service is receiving service. As of Jan. 8, that total was 193,490." The company has also mailed out over two million notifications to owners, more than the number officially called in. Given the age of these Jeeps, many of them have had multiple owners, and historically, the older a vehicle is, the less likely the recall fixes are to be carried out. FCA is currently creating a video urging people to have the hitch installed to be released soon. News Source: The Detroit News [1], [2]Image Credit: Jeep Recalls Jeep Safety SUV FCA jeep liberty jeep safety

7 months later, Jeep 'trailer hitch' recall still stalled

For the past few years, Chrysler and its CEO, Sergio Marchionne, have gone head-to-head with the National Highway Traffic Safety Administration and its boss, David Strickland, over the government safety agency's request for Chrysler to recall almost three-million Jeep vehicles due to what NHTSA says is a safety issue that has caused at least 51 deaths. After a three-year investigation and Chrysler's initial refusal to issue a recall because it deemed the vehicles safe and built to the day's federal requirements, last summer, the two parties compromised on a "voluntary campaign" to inspect 1.56 million vehicles, those being the 1992 to 1998 Grand Cherokee and 2002 to 2007 Liberty.
Those vehicles were designed with their gas tanks between the rear axle and the bumper, and NHTSA says that in rear-end collisions, damage to the fuel tank has caused fires responsible for those 51 deaths. The compromise reached last summer was that Chrysler would inspect 1.56 million vehicles and, "if necessary, provide an upgrade to the rear structure of the vehicle." Practically speaking, that meant Chrysler would replace aftermarket trailer hitches, but would take no action if a vehicle had a factory-installed hitch or an aftermarket hitch from Mopar.
A report in The Detroit News says the "voluntary campaign" is just now getting under way, with Chrysler saying last week that the design of the replacement part had been finalized and it was tooling up "to deliver the required volume." Seven months later, still in question is whether NHTSA will crash-test the fix engineered by Chrysler, noteworthy because not only did the vehicles in question pass every safety standard necessary to be cleared for sale at the time, there are still questions (to those of us on the outside) as to how the Jeeps at issue fare among their peers in such incidents. Either way, Chrysler and NHTSA apparently still disagree on the efficacy of the remedy itself: the carmaker says it might help in low-speed crashes but not high-speed collisions, a position the NHTSA is at odds with. All of this means the campaign doesn't yet have an end in sight.