Well... weight is an answer to that question.
Not to mention that an LQ9 long block runs right about $4300-4500... and a complete crate LS2 runs right around $5500. After you get a manifold, injectors, coils, fuel rails... etc etc... your are right at the same as an LS2, or even a little more. Also not to forget, that the LS2 makes more power right out of the crate.
Anyway you look at it... if it's an LS or an LQ... your looking at about $8k for something that makes 500'ish HP. The LS just does it with less weight.
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