Embodiments of the present invention generally relate to a vehicle-mounted conveyor system, and more specifically a conveyor system that can be mounted on a short-length, non-CDL truck. The conveyor can convey a wide range of materials, including shingles, shakes (e.g., loose dirt, gravel, and rocks), tiles, underlayment, solar panels, siding, bricks, fasteners, etc. In some embodiments, the conveyor system includes a frame with a four-sided FRP tube, a belt positioned on top of the tube, cleats interconnected to the belt, belt pulleys, a motor, a material backstop, and conveyor positioning features. Conveyor positioning features include a tilting hinge and carriage guide, a conveyor carriage, a telescopic vertical post, and a slewing drive. In some embodiments, the conveyor frame is a fiber-reinforced plastic material.