Quote:
Originally Posted by Ralph A Powell
Chevy did same thing with the first batch of COPO's when they recalled the production blocks and heads on the S/C engines with the LSX blocks and heads non production parts that were not installed on those cars. So you should say that Chevy started the practice.
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The blocks were never recalled, and every single one of them had an iron LSX block from the git-go.
Heads with extra helper bolts were provided after a management decision to use 4-bolt heads (from a surplus of existing inventory) was not successful. Customers were able to keep their original heads and they got brand-new 6-bolt heads, plus gaskets, bolts, and an apology letter.