Engines endure much abuse. Sometimes this torture results in damage to either the block or the heads--or both. The block can be very rare, such as a matching-number block for an LS6 Chevelle or the ...

There are plenty of instances where perfectly good—and often rare—cast iron cylinder head and engine block castings are scrapped due to the presence of a hairline crack in an external surface. Often ...

In production since 2018, the 2.7-liter turbo inline-four engine referred to as L3B has been hit with a customer satisfaction program. As it happens, a handful of engines may feature cracked blocks.