Loyal HRM readers will no doubt remember our "Ultimate Chevy LS Cylinder Head Test" in the Dec. '10 issue in which we tested 11 different LS1/LS6 cathedral-port-style heads. In this issue we're doing ...

Just in case you aren’t up on current events in the LS community, there seems to be a divide wedged firmly between cathedral port and rectangular port enthusiasts. For those unfamiliar with the terms, ...