The Silverado 2500HD and 3500HD have a standard gas-powered 6.6-liter V-8 that makes 401 horsepower and 464 lb-ft of torque and mates to a six-speed automatic transmission. The optional Duramax diesel 6.6-liter V-8 carries over from the previous generation.May 11, 2020 · Bilstein 5100 has lifted vehicle support too, and they function well right until you get to the 4” mark. Above that, Fox is the king. 2.0 shocks will provide firmer control and better damping on higher lifted trucks. Algebra 2 volume 2 houghton mifflin harcourt answers pdf