While that headline implies hope, the negativity is obvious: Chevrolet Performance has decided to discontinue its iconic LS9 Long Block. But fear not, bowtie faithful, as Chevrolet’s recent social media rumblings suggest that big news is on the way! Whether that means something old-school big-block, something LT-based, or something LS-based remains somewhat of a mystery. Of course, as we all know, that was Chevrolet’s intention all along.
According to the Chevrolet Performance website, the LS9 Long Block is now listed as “discontinued”, removing the brand’s most potent option for LS power. Part of General Motors’ 6.2L Gen 4 family, the LS9 Long Block was offered as a boost-capable foundation for LS swaps. In addition to a lightweight aluminum block, the engine paired a forged steel crank, forged titanium connecting rods, and forged aluminum pistons with a hydraulic roller cam, and aluminum, L92-style heads fitted with titanium intake valves and sodium-filled exhaust valves. The idea was for enthusiasts to buy the block and top it off with the power adder of their choice. Fortunately for LS fans, Chevrolet Performance still has a broad portfolio of LS offerings built around the LS3 and the LSX.
Long Live LS Power!
If you’re new to the Corvette story, here’s a bit of a refresher. The LS9 made its triumphant debut in the ‘Blue Devil’ ZR1, the third-generation ZR1 that debuted with the sixth-generation Corvette. From the factory, the 6.2L LS9, equipped with a 2.3L Eaton supercharger, made an impressive 638 horsepower. That power, combined with weight-reducing carbon fiber body panels and a unique variation of GM’s excellent Magnetic Selective Ride Control, made the C6 ZR1 good for a 3.5-second 0-60 sprint and a top speed of 205 MPH.
On a more relatable note, the LS9 is well known for its excellent torque and easy tunability. Many builders have pushed the engine well beyond 638 horsepower. Naturally, that makes it a very hot item in the aftermarket, with many enthusiasts opting to transplant the engine into something lighter or something from a bygone era that’s both lighter and arguably more exciting.
Something Big, Or More Of The Same?
While Chevrolet Performance currently offers no shortage of LS or LT power, everyone seems intrigued by their cryptic social media post. Speculation has run rampant, with enthusiasts claiming the image is everything from a classic Chevrolet big-block or larger displacement Gen 6 small-block to a fresh LT engine or even the supercharged RCSB truck mill we’ve all pined for. Whatever it is, one thing is evident: Chevrolet is still very much invested in enthusiasts and selling those enthusiasts factory-engineered aftermarket components.
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