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6.3L
Read this in my new Autoweek.
Autoweek
Three- Valve Power Boost
If you think car companies have been spending all their engineering talent developing hydrogen-powered fuel cells or dilithium-crystal hybrids, think again. General Motors unveiled a 6.3-liter V8 with three overhead valves per cylinder (one exhaust, two intakes) that makes 470 hp at 6700 rpm and 385 lb-ft at 5600 rpm. Engineer Fred Rozario says the extra valve increases horsepower by 13 to 18 percent over a two-valve engine. Gm is not saying where we will see the engine, but the small block is ready to go and could be adapted for car and truck applications.
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