Access to the Flats is open to the public. It is public land managed by the Bureau of Land Management and is known for land speed records at the Bonneville Speedway. A remnant of the Pleistocene Lake Bonneville, it is the largest of many salt flats west of the Great Salt Lake. The Bonneville Salt Flats are a densely packed salt pan in Tooele County in northwestern Utah, United States. In 1956, 73-year-old race car driver Ab Jenkins and his son Marvin co-drove a Pontiac Series 860 sedan for a run that broke all existing American unlimited and Class C stock car records for a 24-hour world speed record of 118.375 mph. The 4T65E GM Powertrain transaxle is also being enhanced by Hydramatic Motorsports to run over 200 mph and the final drive ratio is changed from 2.56 from 2.93.The Pontiac Motor Division was established as a performance division largely in part because of its participation in runs at the Bonneville Salt Flats. A fabricated intercooler will be added to the vehicle to pass cooler air to the supercharger to the engine. Doug's Headers fabricated the custom exhaust system with thermal barrier coating applied by Engineered Applications. Special crank and rod preparations with balancing was performed by Evans Speed Equipment. Ported and polished cylinder heads have been re-worked by Morgan Engineering to substantially increase the power potential of the cylinder head. Some of the modifications include the addition of:* A roll cage * Aluminum racing seats* Competition seat belts* Custom-built wheels* A Deist parachute The Bonneville's supercharged 3.8-liter V6 engine is being re-worked by Richard Lee Performance Products and produces in excess of 455 rpm. The Bonneville is undergoing its transformation from a family sedan to a high-speed performance vehicle at Cook Motorsports in Norco, Calif. The car making the attempt will be a modified Pontiac Bonneville driven by 30-year race veteran Mike Cook. Pontiac will be making an attempt to break the current Stock Class land-speed record during Speedweeks at the Bonneville Salt Flats outside of Salt Lake City Utah.
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