Dodge Challenger SRT8 392
The Dodge Challenger SRT8 392 represented a significant power upgrade over the initial 6.1-liter SRT-8. Note: The 392 Hemi (6.4-liter) was actually introduced in the Challenger for the 2011 model year, not 2008. The 392 designation recalled the legendary 392 cubic inch Hemi V8 of the late 1950s, creating a direct link to Chrysler's most storied performance engine.
The 6,424cc (6.4-liter) Apache Hemi V8 produced 470 horsepower at 6,000 rpm and 470 lb-ft of torque at 4,200 rpm, substantial increases over the 6.1-liter unit. The larger displacement, combined with revised cylinder heads, a higher-lift camshaft, and optimized intake and exhaust systems, created a powerplant that was both more powerful and more responsive than its predecessor.
The 392 retained the fuel-saving MDS (Multi-Displacement System) that could seamlessly deactivate four of the eight cylinders during light-load cruising, improving fuel economy without compromising performance when demanded. The system's operation was transparent to the driver, switching between four and eight cylinders based on throttle input and load.
A six-speed manual transmission with a short-throw shifter was available, along with the five-speed automatic with AutoStick. The manual was the enthusiast's choice, providing a more engaging and connected driving experience. The automatic, however, was well-calibrated and provided quick, crisp shifts in sport mode.
The 392's chassis benefited from continuous development of the LX platform. Revised spring rates, recalibrated Bilstein adaptive dampers, and stiffer anti-roll bars improved both ride quality and handling compared to earlier SRT-8 models. The Brembo braking system was upgraded with larger rotors, providing improved stopping performance and better resistance to fade.
The 392 could accelerate from 0 to 60 mph in approximately 4.5 seconds and cover the quarter mile in the low 12-second range, making it competitive with more expensive European performance cars. The car's massive torque made it particularly effective in real-world driving, where its ability to pull from low rpm in any gear provided effortless overtaking capability.
Visually, the 392 was distinguished by unique badging, specific wheel designs, and available appearance packages. The interior received SRT-specific upgrades including suede inserts, contrast stitching, and a flat-bottomed steering wheel. The overall effect was a car that felt more special and more focused than the standard Challenger.
The Challenger SRT8 392 occupied an important position in the modern muscle car hierarchy. More powerful than the base SRT-8 but less extreme than the later Hellcat, it offered a sweet spot of performance, daily usability, and value that made it one of the most popular performance cars in America.
Check for MDS lifter failure symptoms (tick noise, misfire). The 6.4 Hemi is generally robust but verify regular oil change intervals have been observed. Manual transmission cars are rarer and more desirable. Inspect the Bilstein dampers for leaks. Check for modifications, particularly exhaust and intake changes. Verify the differential for noise. Look for drag strip abuse evidence in the drivetrain.
Assembled at Chrysler's Brampton Assembly Plant in Ontario, Canada. The 6.4-liter Hemi was produced at Chrysler's powertrain facilities. The 392 designation was a deliberate homage to the classic 392 Hemi of the 1950s.