Chevrolet's Vortec 8100 was a powerful big block engine that could be found in many GM vehicles. However, it was eventually ...

For information after 2011, please see Thor Motor Coach. (*)Vortec engine included in price, do not add for it. (**)Slide-out room and hydraulic jacks included in price. No longer producing this line.

Fuel economy for the Chevrolet Silverado 2500 with the 5.3-liter Vortec engine is rated at 15 miles per gallon city and 19 miles per gallon highway. Optional engine power was also available from a 6.0 ...