GM LS Engine
An LS3.
The LS Engine is a small block V8 created for use in General Motors’ rear-wheel drive cars and trucks. There having been several different generations of the engine. These V8s are a popular engine for transplants into other platforms. There are forums dedicated to LS engine swaps. Popular choices for swaps are older muscle cars and import cars. Here at PSI, we have used a built LS1 in a 67 Chevelle SS restomod project. Being a Chevy engine and Chevy platform fits, however we swap the LS into cars by other manufacturers.
LS1 in a 1967 Chevelle
We currently have two projects in the works, both of which are with Nissan platforms. In one project, we are placing a built LS1 into a Nissan 350Z. In the other, we are putting an LS2 into a Nissan 240SX. In both of the projects, the small block V8 is replacing a small displacement Nissan engine.
LS swaps have become popular because of the powerband it offers. Smaller displacement 4 and 6 cylinders engines like the VQ and SR lack the horsepower and torque of this V8. Forced induction is a solution for increasing horsepower and torque but the complexity is increased. In the 240SX, a turbocharged SR20 is being replaced by an LS2. The LS2 will produce more horsepower and torque. The torque curve is consistantly higher. There is no waiting for the turbo to spool up, so torque is available in low RPMs.
Here is a dyno graph from a 2007 Corvette.
At 2000 RPM, the LS2 in the Corvette produces a little over 300 ft-lbs of torque.
The horsepower and torque of LS engines makes them a good candidate for many different swaps. We look forward to doing more LS and other engine swaps in the near future.