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2006 LL8 (Vortec 4200) engine in 2006 Chevrolet TrailBlazer. The LL8 (or Vortec 4200), is a straight-6 gasoline engine produced from 2002 to 2009. It was the first Atlas engine, and was introduced in 2002 for the Chevrolet TrailBlazer, GMC Envoy, and Oldsmobile Bravada. The engine was also used in the Buick Rainier, Saab 9-7X, and Isuzu Ascender.
2002–2005 Chevrolet TrailBlazer, with modification to meet Japanese standards. The first-generation TrailBlazer is based on a truck platform officially known as GMT360, with all models having four-wheel-drive layout as an option with both automatic engagement and the more traditional "Auto," "2-High," "4-High," and "4-Low" gearings, except the SS model which features an all-wheel-drive system.
The 4L65E shares the same exterior parts but have stronger internals such as 5 pinion planets compared to 4 in the 4L60E. 4L60E uses a 6.5" depth bell with 6 bolts for non gen 3 LS applications and a 7" depth bell with 7 bolts for LS applications.
For the J-cars, it evolved through 2002 when it was replaced by GM's Ecotec line of DOHC 4-cylinder engines. In the S-10 related models, it evolved through 2003 and was known as the Vortec 2200 . Production ceased consistent with the replacement of the S-series trucks with the GMT 355 sub-platform.
The Chevrolet engine debuted in 2002 with part number 1958602 and sold for a little under $4000 in 2012. [28] It has 350 cubic inch displacement via a 4.000 inch bore and 3.480 inch stroke. [29] The 602 engine is equipped with iron heads, a cast-iron block, and aluminum pistons. [28]
The engine blocks were cast in aluminum for car applications, and iron for most truck applications (notable exceptions include the Chevrolet TrailBlazer SS, Chevrolet SSR, and a limited run of Chevrolet Silverado/GMC Sierra extended-cab standard-box 4WD trucks).
The second generation GMC Envoy was introduced in early 2001 as a 2002 model (skipping the 2001 model year). In line with the Chevrolet Trailblazer replacing the Chevrolet (S-10) Blazer, the 2002 Envoy replaced the GMC Jimmy five-door. The Envoy was Motor Trend magazine's Sport/Utility of the Year for 2002.
In several markets, the vehicle was marketed as the Chevrolet Tracker, and as the Holden Trax in Australia and New Zealand. The Trax became available in Canada, Mexico, Germany, South Korea, Lebanon, United Arab Emirates, and Europe for the 2013 model year and was released in the United States for the 2015 model year.