Readers with a few muscle car moments under their belt will realize that any traditional 327 small-block that produced nearly 500 hp was considered a race motor. This little 5.3L (324 cubic inches) ...

Life doesn't always go as planned. Case in point, our junkyard 5.3L series. Things started out well enough inpart 1, when we replaced the stock cam and springs with an LS9 cam and LS3 springs. This ...

LS engine swaps are all the range, and while there is certainly a case to be made for the power potential of a solid LS-based small-block, the need for complicated electronic fuel injection scares ...

The next step was to perform acam and valvespring swap. Installation of the Comp XR276HR cam and 26120 springs resulted in a jump in power from 378 hp and 482 lb-ft to 427 hp and 504 lb-ft. The final ...

General Motors announced today that the 5.3-liter V8 found in both the GMC Sierra and Chevy Silverado has been SAE rated at 355 hp and 383 lb-ft of torque, and will get an estimated 23 mpg highway for ...

In the world of engine swaps, Chevrolet's LS series rules the roost — and it's for good reason. There's a wide variety of options to choose from, and the abundance of aftermarket support means that ...

The 5.3-liter V8 Ecotec3 might seem like the stepchild of the General Motors family, especially with the LS series of engines around, but it's a winner in its own right. This naturally aspirated ...