AEC Offroad AEC Dumptruck 18 cu yd (model HDK4) 1959 - 1965 ByTrucksplanet Published on 03.09.2019 Share Tweet The biggest truck of the AEC company was a 2 axle dump truck HDK4 with the 18 cu yd (14 cubic meters) body. The dump trucks were equipped with a powerful 18-liter AVT1100 engine with output of 340 hp. Continue Reading Related Topics:aec, aec dumptruck