Engine & Transmission
  • Engine: Powered by the legendary Duramax 6.6L 8-cylinder turbo diesel engine. For the 2007 model year transition in medium-duty trucks, this engine generally delivers around 300 to 330 horsepower and upwards of 520 to 620 lb-ft of torque at low RPM. It features a robust high-pressure common-rail fuel system built to handle heavy, continuous commercial loads. 
  • Transmission: Paired with an Allison automatic 5-speed transmission. Allison transmissions are standard for medium-duty snow upfits because of their torque-converter design, which allows for smooth power transfer and directional shifts (forward to reverse) during tight plowing intervals without punishing the drivetrain. 
The upfit includes a premium body built by Monroe Truck Equipment
  • All-Season “Live Floor” Functionality: The QSL series represents Monroe’s “Quick Split Line” or specialized municipal design. Unlike standard dump bodies, an all-season body functions as a conventional dump bed for hauling bulk material in the summer but converts into a material spreader for winter. It often incorporates a longitudinal conveyor system or dual-purpose floor configuration to feed material directly to a spreader spinner without needing to lift the bed.
  • Tarp System: Includes an integrated tarp mechanism to secure bulk materials (like salt, sand, or gravel) from moisture and highway wind compliance.
  • Body Hoist: Accompanied by an in-cab hoist controller to safely elevate the bed for rapid material offloading. 
Plow & Spreader System
  • Western 10′ HW (Heavyweight) Steel Plow: The Western Heavyweight Straight Blade is specifically engineered for commercial vehicles in the 14,000–27,000 lbs. GVW bracket. It features a massive 10-foot wide, 33-inch tall, 7-gauge powder-coated steel moldboard designed for clearing large municipal roads and expansive commercial parking lots. It utilizes a heavy-duty attack angle and high-carbon steel cutting edges to scrape clean down to the pavement.
  • In-Cab Storm Guard Controls: Provides independent tactile manipulation for both the plow configurations and the hydraulic body hoist directly from the driver’s seat.
  • Separate Storm Guard Spreader Controller: Allows the operator to manage material output dynamically. You can adjust the conveyor feed speed and the spinner broadcast radius separately to match the truck’s speed and road conditions, ensuring precise salt application and minimizing waste.