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Most of the time I don't have any problems either. But replacing a water pump every 2 years plus an optispark is not the way a car is supposed to run. I'm just not going to deal with this issue anymore. I'm doing a swap. Now I see why GM ditched this design after only a few years. The LS series is still going strong since 1997, and has become the most popular engine for builds and new aftermarket components. It's considered the best GM V8 design since the original 350 was designed over 60 years ago. This reverse flow crap is for the birds. Most owners know exactly what I'm talking about if you own the car long enough. And I only drive mine 5k miles a year. So this pump has 10k on it. That's unacceptable. My other 2 LS cars give me absolutely no issues whatsoever.
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