Getting to Know the LS2 Engine

Posted on October 28, 2015

In 1997, Chevy undertook the first revision of its small-block engine since 1955 with the introduction of the LS1. With huge boosts in horsepower and performance, the LS1 was quickly embraced by enthusiasts around the world. For the 2005 model year, Chevy went back to the drawing board, and the LS2 small block engine was born.

With 400 horsepower and 400 foot-pounds of torque, this engine is no wimp. Building on the Gen-III engines that preceded it, the first of the Gen-IV engines is a power monster, making use of improved cylinder heads and fuel-air mixture to improve horsepower while also improving fuel efficiency.

The newly designed small-block engine moves a number of sensors around, but the real innovation is in its flat-head pistons and friction-reducing rings. This combination both enables and makes the most of the 10.9:1 compression ratio. As a result, this engine practically rears up and kicks with just a glance in its general direction.

Another major revision from the LS1 lives in the oil pan. Oil starvation was an occasionally-reported problem on the track. The LS2 trades the gull-wing oil pan design for a wingless version with new interior baffles. These baffles ensure sufficient oil can reach the oil pickup during high-demand cornering. The result is a reduced engine oil capacity from 6.5 to 5.5 quarts.

Originally included in the 2005 Corvette, Chevy SSR, and Pontiac GTO, the LS2 engine is a great choice for your custom build project for the track or for the road.  You’ll be wowed by its power the very first time you feather the gas pedal, and marvel at its quality for as long as you own your vehicle.

At Golen Engine Service, our highly-skilled workforce controls every aspect of the engine build, from machine work to final quality assurance testing, in our Hudson, NH facility. With our 12,000 square-foot facility and world-class rebuild experts, we’ve got the expertise, facility, and products to make your engine sing.