High mileage or a high-performance camshaft swap: Those are the top two reported reasons for LS rocker-arm failure. The symptoms are a miss with a ticking sound coming from the valve cover or needle ...

Compared to the old, stock Gen I/LT1/LT4 small-block valvetrains, the LS engines are head and shoulders above their ancestors when it comes to factory equipment. Where the old engines (except the LT4) ...

If the LS1/LS2/LS6 engine family has a shortcoming, it has to be the rocker arm mounting, which doesn't allow for adjustment. Non-adjustable rockers have become standard in virtually all late-model ...

Can roller rocker arms actually help add horsepower? The mechanically savvy will likely consider that question and say: “If you have more lift, and open the valves more, then you’ll make more power.

Last month HOT ROD, in conjunction with Duttweiler Engineering, began evaluating the performance potential of the widely available 6.0L LS-series truck engine. We were able to raise output from the ...