The deep-breathing, high-revving LS3 is rated at 430 hp in our Connect & Cruise kit, offering the lightweight advantage of an aluminum cylinder block, aluminum heads and a composite intake
manifold, which can reduce the curb weight and improve the weight balance of your older vehicle. It’s backed by the 4L65-E four-speed overdrive automatic, which enables great highway
cruising performance and fuel economy with the durability of hardened internal parts and five-pinion gearsets. It is also available as an E-ROD system.
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