When the D10 was introduced in 1977, it was the most powerful track-type tractor ever built at 700 horsepower (520 kW) . The Cat D10 could be ordered with up to a 19-foot (5.8 m) U-blade, and weighed in at 180,000 lb (82,000 kg). Later versions weighed in at 190,000 lb (86,000 kg). The U-blade was 7 feet (2.1 m) high and could push 35 cu yd (27 m3) according to Caterpillar's literature. The November 1977 issue of Excavating Contractor magazine had a 2-page story on the bulldozer titled "Cat Uncorks The New D10". One of the first D10s is currently sitting in front of the East Peoria, Ill plant where it was made. A picture of this D10 can be found on pages of a book titled "The Caterpillar Century" on pages 298-297. Caterpillar put the 1,786 cid V-12 twin turbocharged D348 in the D10 to power it. This had already proven itself in the 777 off-highway hauler and the 550 hp 10 yard 992/992B wheel loaders from 1968 on. The early D10s came with a single big black exhaust stack up front. But some engine problems came up with exhaust system routing which resulted in two exhaust stacks up front to correct this problem. This new look took root in 1980.