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I going to puke if one more person refers to the #8 as a cooling issue.....once and for freaking all, it’s a defect in the casting of the block.
The story is that GM's block design had a flaw in the way the head bolts in the Number 8 cylinder area went into the block. Stress was created that eventually caused the block to crack in some engines. There is an area on the #8 cylinder wall where a hole is tapped for the head bolt. The cylinder wall is thicker in that area. The crack was occurring where the wall was thinner, on the opposite end. The engineers decided to extend that thicker portion further down the cylinder wall, to help alleviate the problem.
The story is that GM's block design had a flaw in the way the head bolts in the Number 8 cylinder area went into the block. Stress was created that eventually caused the block to crack in some engines. There is an area on the #8 cylinder wall where a hole is tapped for the head bolt. The cylinder wall is thicker in that area. The crack was occurring where the wall was thinner, on the opposite end. The engineers decided to extend that thicker portion further down the cylinder wall, to help alleviate the problem.
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