Every GM aficionado knows that factory engine blocks have practical limits, both in terms of durability as well as displacement. Although production LS1 and related Gen III and IV family engine ...

Unless you've been living under a rock, we're sure you've heard about GM's LS series of engines. When first introduced back in the late '90s, these all-aluminum mills set the Chevy performance ...

The impressive efficiency of the 15-degree LSX series heads can now be used on a block that can deliver serious inches, rock-like stability, and 6-bolt head clamping-all for about $2,000!

The General Motors small-block Gen III LS1 V-8 has been around since 1997, but many enthusiasts are still learning about its great features. Because of that, whether you are working on a Gen III V ...

They didn’t expect much from the charred ZR1 when it rolled off the salvage truck. It had fire damage, mystery parts, and probably no future—until they popped the hood. What was supposed to be a ...

After two generations, the universally eulogized SBC leveled up to the LS architecture in 1997, starting with the LS1 of the C5 Corvette. Tremendously different from the Gen 2 small block from the ...

Chevy revealed its largest crate engine yet at SEMA—the 776hp LSX454R. A cast iron block is crowned with 6-bolt LSX aluminum heads which together with forged aluminum pistons help deliver a ...

Tone the boost down to 6.6 psi, and the engine produces *just* 842 horsepower. NRE fortified the GM LSX block with a lot of aftermarket essentials, such as a 9.7-inch deck height and filled with a ...

The 5.7L LS1 introduced the third generation of General Motors’ Small Block V8 engines. Other than a similar displacement, external dimensions and rod bearings, the LS1 shared little with the ...

The point is well taken, but Lingenfelter bases his new engine not on the old iron big-block but on the Corvette's LS1 aluminum small-block. How could this be? In our March 1999 issue ...