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Click on Helio Castroneves for a high res gallery

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The IndyCar series is due to adopt new engine rules soon and it looks like they will follow the lead of many manufacturers toward downsized and turbocharged engines. The open-wheeled racers that run at the Indianapolis 500 and many other tracks currently use a normally aspirated 3.0L V8 running on straight ethanol. A new engine formula is expected to go into effect for the 2011 season with a switch to turbo engines with either four or six cylinders.

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Honda is now in its third season as the sole supplier of engines for the IndyCar series, and it has decided to re-up for another five years. Honda originally jumped into IndyCar from the now-departed Champ Cars in 2003, and at that time, the H was still competing with Toyota and General Motors. The other two manufacturers eventually dropped out, leaving Honda to supply the whole field. Honda's new committment isn't an exclusive deal. The Indy Racing League is holding a roundtable summit in India

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Click above for more high-res pics from the Gainsco 300

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