The previous generations of these small block engines were made with a cast iron block, but with the new General Motors LS1 engines, a change was made to instead make them out of aluminum, which was also used for the cylinder heads. By doing this, GM was able to drastically reduce the weight of the engines, and while that did reduce the power capabilities, it makes for a more balanced driving experience. GM gave the engine a bore of 3.9 in. with a 3.62 in. stroke,…
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What’s The Difference Between These Muscle Car Motors?
