Question: what is the difference between ls2 and ls3 engine?
Answer: The LS2 and the LS3 have a lot in common. But, the most obvious difference between the two is the displacement. The LS2 has 6.0L of displacement, and is technically was the first Gen IV Chevrolet engine. The LS3, on the other hand, has 6.2L of displacement and is also Gen IV Chevrolet engine.