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Written by Tom Harrison
It takes a special kind of person to look at a Jeep Trackhawk and think "That"s nice. Shame it doesn"t have a bit more power". John Hennessey Top Gear"s favourite Texan is one such person. As standard these things make 707bhp from a 6.2-litre supercharged V8 good for 0-60mph in 3.5 seconds and a quarter-mile in the mid-elevens. John Hennessey"s Trackhawk isfaster. Much faster. That"s thanks to something called the HPE1200 upgrade. It involves upgraded pistons, rods, ported cylinder heads, a camshaft upgrade, long tube stainless steel headers and a bigger 4.5-litre supercharger. Running on 109-octane fuel and 22psi of boost, Hennessey"s Trackhawk makes 1,003bhp and 892 lb-ft. At the wheels. At the crank, you"re looking at 1,200bhp and 1100 lb-ft. Or if you"d rather, enough to win a tug-of-war with a medium-sized aircraft carrier. The result? 0-60mph in 2.3 SECONDS. That"s faster than, well, almost any car you"d care to mention. The quarter-mile is taken care of in 9.66 seconds at 145mph. A fair bit quicker than a McLaren 720S, which takes a little over 10 seconds. And those things are not slow. If you want to see exactly what that looks like, click here to watch (and hear) the HPE1200 very nearly out-accelerate its own gearbox.
Date written: 15 Oct 2018
More of this article on the Top gear website
ID: 13716
It takes a special kind of person to look at a Jeep Trackhawk and think "That"s nice. Shame it doesn"t have a bit more power". John Hennessey Top Gear"s favourite Texan is one such person. As standard these things make 707bhp from a 6.2-litre supercharged V8 good for 0-60mph in 3.5 seconds and a quarter-mile in the mid-elevens. John Hennessey"s Trackhawk isfaster. Much faster. That"s thanks to something called the HPE1200 upgrade. It involves upgraded pistons, rods, ported cylinder heads, a camshaft upgrade, long tube stainless steel headers and a bigger 4.5-litre supercharger. Running on 109-octane fuel and 22psi of boost, Hennessey"s Trackhawk makes 1,003bhp and 892 lb-ft. At the wheels. At the crank, you"re looking at 1,200bhp and 1100 lb-ft. Or if you"d rather, enough to win a tug-of-war with a medium-sized aircraft carrier. The result? 0-60mph in 2.3 SECONDS. That"s faster than, well, almost any car you"d care to mention. The quarter-mile is taken care of in 9.66 seconds at 145mph. A fair bit quicker than a McLaren 720S, which takes a little over 10 seconds. And those things are not slow. If you want to see exactly what that looks like, click here to watch (and hear) the HPE1200 very nearly out-accelerate its own gearbox.
Date written: 15 Oct 2018
More of this article on the Top gear website
ID: 13716
