Reason #1 why I don't trust GM shit: DEXCOOL
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Sure the SBC has been around forever. It's a fundamentally sound design. I just have a few friends with LS1s that have had a lot of minor issues sprout up on low-mileage cars....things that just should not be happening to "new" cars. Like power steering pumps going out before 40,000mi. Random A/C parts starting to leak refrigerant. Glass windows separating from convertible tops. I know these things aren't really related to the LS1 itself...but it all just makes me want to stay the hell away from anything GM.
Now, if someone offered me an FD powered by either a 13B or a LS1...I'd probably take the LS1! But that's another story entirely.