Then 1997 rolled around, and we saw the third generation of what these small block engines could be. These were now to be known as LS engines, importantly taking the name of the parent company ...
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.