LS3's can make great power with the stock heads, but Trick Flow engineers combined the best features of GM's LS3 and LS7 cylinder heads with its own race-winning engineering and technology to create ...

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 ...