Rumble Bee HEMI: The Three Modern Mopar Muscle Trucks
As enthusiasts, it always seems like our opinions on new cars and trucks fall on deaf ears and manufacturers don’t give us the time of day. But when Stellantis announced the comeback of the HEMI V8 last year, a glimpse of hope was restored. And with V8 power officially returning to the Ram 1500 lineup, the brand is now pushing directly into on-road muscle truck territory with the new 2027 Ram 1500 Rumble Bee family.
The lineup consists of three distinct models: the Rumble Bee, Rumble Bee 392, and range-topping Rumble Bee SRT. Every version rides on a dedicated quad-cab short-bed configuration designed specifically for performance use. Compared to trucks like the RHO and TRX, the wheelbase is shortened by roughly 13 inches, a change that also reduces chassis flex by 10 percent to improve overall handling response.
Built Around Street Performance
Ram gave every Rumble Bee a more aggressive stance using widened front fenders and bedsides inspired by the TRX. While the pieces are unique to the Rumble Bee due to the altered proportions, the trucks maintain the same imposing 88-inch overall width as their off-road sibling.
Unlike the TRX, these trucks were engineered with street performance as the priority. Every Rumble Bee uses a Borg Warner 48-11 transfer case with full-time active four-wheel drive and a variable torque split, but drivers can also switch into rear-wheel drive mode for a more traditional muscle truck experience.
The core hardware throughout the lineup stays focused on balancing traction, handling, and straight-line capability without drifting too far into compromise territory.
The Return Of The 5.7 HEMI
The standard Rumble Bee brings back the familiar 5.7-liter HEMI V8, producing 395 horsepower at 5,600 rpm and 410 lb-ft of torque at 3,950 rpm. Ram drops the eTorque mild hybrid system entirely for this application, though the engine retains Multi-Displacement System technology to reduce pumping losses under lighter loads.
Backing the HEMI is the well-known 8HP75 eight-speed automatic transmission paired with both steering wheel paddle shifters and a center console-mounted shifter. A 3.92 rear gear helps the truck maximize available power, while a standard sport exhaust gives the combination a sharper tone.
Suspension duties on both the Rumble Bee and Rumble Bee 392 rely on dual A-arms with steel springs and Bilstein monotube shocks up front, while the rear uses Ram’s familiar five-link solid axle setup with matching Bilsteins. The trucks ride on 22-inch wheels wrapped in 285/45/22 tires, with four-piston Brembo brakes clamping 14.9-inch front rotors and 14.8-inch rear rotors.
The 392 Finally Lands In A Ram 1500
For many Mopar enthusiasts, the Rumble Bee 392 is the truck they have been waiting on for years. Ram finally installs the 6.4-liter Apache V8 into the 1500 platform using the proper version from Dodge muscle car applications instead of the HD truck variant.
Output lands at 470 horsepower at 6,000 rpm and 455 lb-ft of torque at 4,200 rpm. Ram estimates the truck will run from 0 to 60 mph somewhere in the mid-five-second range. The drivetrain, rear gear, suspension, and brake package largely mirror the standard Rumble Bee setup.
Things become considerably more serious with the available Track Pack option. The package replaces the steel spring suspension with airbags and upgraded Damptronic Sky dual-valve semi-active dampers. Combined with 22×12-inch wheels and massive 325/40/22 Goodyear tires, the Track Pack-equipped 392 is capable of generating a claimed 0.89 g on the skidpad, representing roughly a 20 percent improvement over the standard 5.7-liter truck.
Ram also fits the Track Pack with a bespoke e-Spool differential designed for immediate lockup and aggressive launches. A more traditional asymmetric limited-slip differential is expected to arrive later for both 392 trims.
The 777-HP Rumble Bee SRT
No modern Ram performance lineup would feel complete without supercharged power, and the Rumble Bee SRT delivers exactly that. Using the full 777-horsepower version of the supercharged 6.2-liter Hellcat V8 previously found in the TRX, the SRT combines massive power with a street-focused chassis setup.
Unlike the TRX, the SRT allows all of that output to be directed exclusively to the rear wheels. Ram pairs the engine with the heavier-duty 8HP95 transmission and a taller 3.55 rear gear to help the truck chase serious top-end speed.
Ram estimates the truck will approach 170 mph, easily surpassing the long-standing 154.587 mph top-speed record set by the Ram SRT-10. Even with the taller gearing, acceleration remains violent, with targets of 3.4 seconds from 0 to 60 mph and an estimated quarter-mile time of 11.6 seconds.
Aerodynamics became a major development focus for the SRT package. A dedicated aero kit includes a 4.5-inch front splitter, hard tonneau cover, and rear wing designed to generate more than 400 pounds of downforce while improving rear stability at speed. The front fascia was also redesigned to maximize airflow into both the engine and brake cooling systems.
Brake hardware grows substantially as well. Six-piston Brembo front calipers shared with the 392 Track Pack clamp massive 16.1-inch rotors, while the rear uses 14.6-inch rotors with single-piston calipers.
Availability Still Taking Shape
Ram has not finalized complete pricing or availability details yet, but CEO Tim Kuniskis confirmed the 5.7-liter trucks are expected to arrive first around late October. While exact pricing remains undisclosed, Ram says the base Rumble Bee will target the “heart of the segment.”
The Rumble Bee SRT is expected shortly after, with Kuniskis also confirming the truck should start below the price point of the TRX. That still leaves room for the SRT to push well into six-figure territory depending on configuration, but buyers should see deliveries begin before the holiday season.
