In the quest for performance for your LS1-equipped Firebird or GTO, the road to big-power increases usually progresses from bolt-ons into "Cam-Only" configurations, such as those presented in "LS1 ...

On our test subject, a 2001 Camaro SS, these upgrades were realized during an engine build that was completed in 2007. At the time, the budget allowed for a set of PRC Stage 2.5 5.3L heads, while a ...

Ever since humans started using motor cars, they have undergone massive transformations, makeovers and evolutions. Every part of modern-day vehicles is a highly advanced version of what was used in ...

Chances are you've heard of the Racing Head Service. Back in 1967, RHS started out life as a manufacturer of racing cylinder heads but soon grew into a full-service operation, offering turnkey engines ...

Chevrolet took one heck of a chance by replacing its much loved small-block with the modern LS1 engine. The LS1 had big shoes to fill—after all, the original mouse motor was the darling of the racing ...