2026 Mack GR64F

Category, Truck (dump spec), tandem axle vocational chassis with 66,000 GVWR and 135 miles indicating yard move and upfit time rather than a worked duty cycle. Serial 1M2GR2GC8TM055482, stock 70926. Powertrain, Mack MP7 rated 425 hp paired with a Mack mDRIVE HD 13-speed (TMD13AFO-HD) with creeper and multi-speed reverse, set up for controlled starts under load and backing into tight dump positions. Gearing at 3.98 with 20k front and 46k rears points to a startability-focused vocational ratio, suited to stop and go haul, short runs, and jobsite approach speeds more than sustained high-speed cruise. Running gear, SS46 Mack Camelback multileaf 46,000 lb suspension favors durability and load stability over ride softness, typical for body and hoist work where articulation and spring pack condition matter. Wheelbase at 234 inches leaves room for common dump body lengths and hoist packaging while keeping turning manageable for site work. Walkaround items, frame rails and suspension hangers should be checked for upfit drilling quality and paint break at fasteners once the body is installed, especially around hoist mounts and rear crossmember. Cab and controls on an mDRIVE vocational spec should be verified for PTO and body control integration during upfit, since the truck is new and the final utility depends on clean PTO wiring, switch layout, and calibration.