Whatever you call your Gen III small-block, you should know the LS1 came with an aluminum block loaded with groundbreaking features. See All 12 Photos The LS1 block is quite different from ...

Before the advent of aftermarket aluminum blocks, trick (and high-buck) cylinder sleeving methodology was needed to achieve big bore sizes on production LS1 block castings (see Pit Stop ...

With the weight of your average LS1 or LS2 aluminum block being about half this--and a production iron block falling somewhere in between--a vehicle with an LSX Bowtie Block will incur somewhat of ...

Not to say that this first effort isn't ambitious. The bore of Chevy's new LS1 aluminum block can't be increased much, so LPE modifications are limited to squaring the decks of the block to ensure ...

Also missing is engine weight, as the LS1/LS2 engines feature not only aluminum blocks and heads, but also composite intake manifolds. Imagine the response you'd get back in the 1960s or 1970s at ...

That first engine, the LS1, was a 5.7 liter, aluminum block, pushrod V8 that, in Corvette trim, produced around 350 horsepower at 5600 RPM. The next year, in '98, the LS found its way into GM's F ...

Next is the 533-horsepower small-block crate engine from Chevrolet. Based on the LS-Series Gen-IV cast-aluminum block, the ...

While Vortec engines typically displace fewer cubic inches (or liters if you prefer) than LS variants, their cast iron blocks further distance them from the aluminum blocks of the LS. However ...

Not great, Bob! For comparison, the aluminum-block 5.7-liter LS1 rocketed the 1999 Chevy Camaro Z/28 we tested to 60 mph in 5.2 ticks, and that thing probably weighed around 3400 pounds.