Loyal HRM readers will no doubt remember our "Ultimate Chevy LS Cylinder Head Test" in the Dec. '10 issue in which we tested 11 different LS1/LS6 cathedral-port-style heads. In this issue we're doing ...

* Common bolt patterns for items like the timing cover, rear cover, oil pan, front engine accessory drive systems, and valve covers (except the early perimeter bolt heads) The new firing order of ...

These days, opting to build a Mouse motor over an LS small-block probably means that familiarity and practicality both stepped into the boxing ring, and the former won via TKO in the 12th round. With ...

The small-block Chevrolet (SBC) V8 has undergone several refinements over the decades since its creation. While every true SBC generation uses the same 4.40-inch cylinder bore spacing, single camshaft ...

The modern COPO Camaro drag car, first introduced for the 2012 model year, has always been a purpose-built race car that cannot be registered for the road. That’s a bit of a shame, as we’re sure there ...

Most engines fall into forgotten chapters of history once they are discontinued, but the same is not true for the LS3. It's a small-block V8 from GM's comprehensive arsenal of awesome engines, and not ...

General Motors began using LS V8 engines in its muscle car lineup in 1997 with the introduction of the 5.7-liter LS1, the first of its third-generation small block design. That first iteration, used ...