The pistons are coated with a polymer substance to minimize wear, as they move up and down. The rotating assembly of the engine, along with its robust block, was designed to give optimum strength and duration together with features that aim to make the L20 quiet and smooth. Its deep skirt enhances strength while minimizing vibration. Cylinder Block and Rotating Assembly: The L20 4.8L engine is constructed on a light, durable foundation.This helps to minimize vibrations that are transmitted through the chassis into the passenger compartment by utilizing an engine cradle and mounting system. Power and refinement are two trademarks of the 4.8L, which complements strong strength with exceptional quietness. The 4.8L’s balance of performance and efficiency are aided by excellent airflow throughout the engine. The Vortec 4.8L V8 L20 is the low-end V8 engine. Surprisingly, the only Gen IV Vortec engine without variable valve timing was the LY2 platform. The Yukon and Tahoe were upgraded to the 5.3 Vortec in the L20 version, while the Silverado and Sierra retained their 4.8 platform. 1999-2006 Silverado and Sierra 1500’s (as well as 2007 “Classic” models)ĭuring these years, Chevrolet used similar engines in many models of its Sprinter and Savana vans.Before being phased out in favor of the 5.3 Vortec with Active Fuel Management after 2013, the engines ran from Gen III through Gen IV of the Vortec series.The 4.8 Vortec was built on a modified version of the familiar GM OHV engine architecture, which meant there were three distinct types over the course of its production life: The 4.8 Vortec was a small-block V8 engine manufactured by General Motors from 1999 to 2013.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |