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Originally Posted by m6-lt1
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Thanks for sharing. These are stock heads on a stock motor, the dealer was the first to crack it open. What I found interesting was this comment:
Quote:
Originally Posted by KingLT1
LT4 heads do not seem to have core shift issues like LT1's.
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I'd like to learn more about this comment and how it applies to the new aluminum heads. The term is straightforward, as it refers to a defect that occurs when the internal mold cores shift in relation to the outer mold cores as the mold is filled. I don't think the dealer measured to check this.