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Information About

Gm Atlas Engine




The Atlas program began in 1995 along with the planning for GM's next-generation mid-size SUV s and Pickup Truck s. These vehicles were designed around the I6 engine. The I6 version was used in a Baja 2000 racing truck, winning its first race in a class that also included V8 engines. Another I6-powered truck won the truck class at the Pikes Peak International Hillclimb .

The Atlas engines are produced at the Flint Engine South plant in Flint, Michigan .


LL8

The LL8 (or '''Vortec 4200'''), is a Straight-6 Truck engine. It was the first Atlas engine, and was designed for GM's new SUV line. Power is 275 hp (205 kW) and torque is 275 ft·lbf (373 N·m). The Atlas LL8 was on the Ward's 10 Best Engines list for 2002 through 2005.

LL8 Applications:


L52

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The L52 (also called '''Vortec 3500'''), is a Straight-5 Truck engine. It displaces 3.5 L (3460 cc) and shares much with the rest of the Atlas family. It produces 220 hp (164 kW) and 225 ft·lbf (305 N·m).

It is used in the following vehicles:


LK5

The Straight-4 LK5 engine is sold as the '''Vortec 2800''' in GM trucks. Like its Atlas brothers, the LK5 has Dual Overhead Cam s, and shares their 93 mm bore and 102 mm stroke. The LK5 displaces 2.8 L (2770 cc) and produces 175 hp (131 kW) and 185 ft·lbf (251 N·m).

It is used in the following vehicles: