Auto Extreme

It was only a matter of time before we started seeing tuning propositions for Dodge’s highly anticipated Challenger Coupe the Hennessey’s 725 Hp & 190 MPH Turbocharged Dodge Challenger SRT700. Hennessey Performance, which is widely known for their Dodge Viper conversions, is offering a unique power kit for the Challenger SRT8 that will be available for a mere 25 clients in 2008. The standard 6.1-liter V8 gets a series of upgrades that include: enlarged displacement to 426 c.i. or 7.0-liters; custom 67 mm turbocharger with a front mounted air-to-air intercooler; stainless steel dual 3 in. exhaust system; high flow cylinder heads and an upgraded engine management system.

The result is a maximum output of 725 Hp at 5,200 rpm and 1,016Nm (750lb-ft) of torque at 4,000 rpm compared to the standard V8’s 425 HP and 420 lb.-ft. of torque. According to Hennessey, the supped up Challenger SRT700 Turbo can go from zero to 60 mph (96 km/h) in approx 3.5 sec, hit the quarter mile in 11.3 sec at 126 mph or 203 km/h and reach a top speed of 190 mph or 305 km/h.

Hennessey actually offers three different levels of tune for the new Challenger SRT8. The first two stages, developing 500 and 530hp respectively, rely on a series of breathing mods for the increase in output. The range topping SRT700, meanwhile, gets a custom turbocharging kit, engine stroker upgrade, forged internals, high-flow injectors, a dual 3in exhaust system and ECU mod. The end result is 725hp at 5,200rpm and 1,016Nm (750lb-ft) of torque from 4,000rpm.

Other features include high-flow cylinder heads, stainless steel piping, a 44mm wastegate, front mount intercooler and a 3.5in polished inlet tube blow-off-valve.

SRT700 Turbo - 426 CID Engine Upgrade

Power:

725 hp @ 5,200 rpm
750 lb-ft @ 4,000 rpm

Estimated Performance:

0 - 60 mph: 3.5 sec. *
1/4 mile: 11.3 sec. @ 126 mph *
Top Speed: 190 mph
* with Drag Radial Tire Upgrade

Includes:

426 Cubic Inch Displacement Stroker Motor
9.0:1 Compression Forged Aluminum Pistons
Forged Steel Connecting Rods
426 Stroker Crankshaft
Balanced Rotating Assembly
High Flow Cylinder Heads
Polished Intake Manifold
Single 67 mm Turbocharger
Stainless Steel Turbo Y-Pipe
Single 44 mm Wastegate
Stainless Steel Dual 3 in. Exhaust System with Polished Stainless Steel Exhaust Tips
Front Mounted Air-to-Air Intercooler
3.5 in. Polished Inlet Tube with Blow-Off Valve
Upgraded Fuel Injectors
Upgraded Engine Management System
180 degree thermostat upgrade
All necessary gaskets and fluids
Professional Installation
Chassis Dyno Testing
Road Testing (up to 100 miles)
One year limited warranty

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