What is the difference between an LSX and a LS?

Related questions

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3. What is an LSX?
4. What year did the lq4 come out?
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Tags

1. #while
2. #based
3. #their
4. #biggest
5. #block
6. #aluminum
7. #casting
8. #engines
9. #difference
10. #engine
11. #material
12. #blocks
13. #family
14. #production