
The 1500 comes with three avaliable engines, the 4.3L(standard), the 4.8L(optinal), and the 5.3L(optinal). The 2500 comes with one avaliable engine, the 6.0L(standard). The 4.3L V6 has 200 horsepower @ 4600 rpm
and 260 lb.-ft. of torque @ 2800 rpm. The 4.8L V8 has 270 horsepower @ 5200 rpm and 285 lb.-ft. of torque @ 4000 rpm. The 5.3L V8 has 285 horsepower @ 5200 rpm
and 325 lb.-ft. of torque @ 4000 rpm. The 6.0L V8 has 300 horsepower @ 4400 rpm, and 360 lb.-ft. of torque @4000 rpm. The 1500 has a max towing capacity of 9,300 pounds and the 2500 has a max towing capacity of 10,800 pounds. All of this information is according to http://www.chevrolet.com
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