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The front seal thing still doesn’t make any sense to me, at least on a car with just an upper pulley. I’ve seen things like this on stock bottom end LS motors making a lot of power on boost. I wouldn’t expect it from adding 2 psi to an LT4 though. I have the same parts on my car, and zero issues.
Shouldn’t be too hard to deal with either way. Replace the seal, and get a 2.50” Griptec pulley for now. Then have someone reputable fix it/ tune it.
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