General Motors has always had a stable footing in the automotive industry, but its small-block engines, particularly the many generations of LS engines, gained a cult following. And it's pretty clear ...
For the ZZ6, Chevy is working to improve the Small Block's high-rpm performance. To make that happen, the engine has Fast Burn aluminum cylinder heads and an updated valvetrain inspired by the LS ...
There are several ways for an engine block to become cracked. The obvious one is freezing in winter due to not using antifreeze or frequent topping up with plain water which dilutes the antifreeze.