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ATS platform TOO versatile?


Bruce Nunnally

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The major issue with making Alpha capable of a full engine range is the perennial bane of the Zeta platform, namely weight. In fact, weight concerns were the very reason Hyundai decided to ban V6s from its new Sonata sedan. As Hyundai NA president John Krafcik explains in this video, by not having to engineer V6 and four-cylinder hardpoints, Hyundai’s developers were able to trim significant amounts of weight and mass from the Sonata. And with recent breakthroughs in direct-injected, turbocharged engine technology, they’re giving up little to nothing for the added lightness.

The problem for GM is that it’s invested so much in its power-mad Cadillac V-Series badge that it can’t develop the platform that will underpin the next CTS-V without at least leaving room for a “breathed-on V6.” Which, as MT explains, means they might as well just make it capable of rocking a small-block V8 as well:

Breathed-on V-6s need engine bay accommodation for the blowers or turbos, and for intercoolers. This makes it easy to protect for a small block — overhead valves are more compact at the engine’s top than dual overhead cams with four valves per cylinder. Therefore, they fit more easily than the breathed-on sixes.

Read More: http://www.thetruthaboutcars.com/gm-alpha-platform-all-things-to-all-enthusiasts/

Bruce

2016 Cadillac ATS-V gray/black

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