In describing GN's new fourth-generation small-block, we run the risk of sounding like that popular light beer commercial, "tastes great, less filling!" As silly as it sounds, the technology packed into GM's new Gen IV powerplant does allow one to have his proverbial cake and eat it too. Fuel efficiency and power are two goals high in any engineer's crite-ria; they also happen to be important to GM's customers ana PHR's readers. The down side is that they are usually at cross-purposes where one goal (fuel efficiency for instance) must be sacrificed for the other (power). Unfortunately, it's a compromise we're all too painfully aware of in our quest for performance. We recently got a chance to sit down with Chris Meagher, assistant chief engineer of small-block truck engines at GM. And while we were initially intent on milking every last bit of information concerning the Corvette's new 400-hp LS2, we quickly realized that the real technology party is happening in the more utilitarian 5.3L version know as the LH6. As it so happens, the LS2 is a subtle evolution of the LS1, so we'll let the other magazines focus on it and we'll concentrate on the much-anticipated displacement-on-demand technology, which has managed to pass the LS2 by.
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机译：在描述GN的新第四代小块产品时，我们冒着听起来像流行的淡啤酒广告的风险，“味道很好，馅料少了！”听起来很愚蠢，通用汽车新的第四代动力装置所包含的技术确实使人们可以吃他的蛋糕，也可以吃掉它。燃油效率和功率是任何工程师的最高标准中的两个目标。它们对GM的客户和PHR的读者也很重要。不利的一面是，它们通常处于交叉目标，其中一个目标（例如，燃油效率）必须为另一个目标（功率）而牺牲。不幸的是，这是一个折衷，我们在追求性能时都太痛苦地意识到了这一点。最近，我们有机会与通用汽车小型卡车发动机助理总工程师克里斯·梅格（Chris Meagher）坐下来。当我们最初打算获取有关Corvette新型400 hp LS2的所有最后信息时，我们很快意识到，真正的技术派对正发生在更实用的5.3L版本中，即LH6。碰巧的是，LS2是LS1的细微发展，所以我们让其他杂志来关注它，我们将专注于备受期待的按需位移技术，该技术已成功通过LS2通过。
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