2000, 502 mag?
#14
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Join Date: Dec 2001
Location: Rapid City SD
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Mine had about 500 hours with half of that running a whipple . I had a valve seat let go, and I think that is the problem you may have heard about. Not ideal heads for supercharger application. They are great as they are designed with stock setup, but not setup for a supercharger. I rebuilt it using aluminum heads, and have about 50 trouble free hours on it, and expect many more. As Griff stated, they like to use oil, but mine uses less using mobile-1 15-50 as well.
#15
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Location: Denver, NC
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Mine are 2001 502's with about 410 hours. Replaced both engine water recirculating pumps due to small leaks, and replaced one alternator in 2004. Engines have always run great. Also using Mobil 1 15W-50.
#17
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Location: Chicago, IL
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Mine has about 600 hours on it, It smokes quite a bit on take off, not sure if that's normal or not for these engines. But it still keeps right at 70mph on the speedo no problem.