Rather than risk this on our LS3, we installed an LS rocker-arm bearing upgrade kit that replaces the factory bearing and trunnions and adds the safety of snap rings to keep it all in place.

The stock LS rocker arm is a wonderful piece of engineering. It’s light, small, and very rigid with a 1.7:1 rocker ratio. It’s even blessed with a needle bearing fulcrum.

Roller refers to the roller bearings used on the rocker arm trunnion to reduce friction and increase high-rpm durability and horsepower. In stock applications, the factory LS rocker bearing does ...

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 ...

In this episode, I showcase the work done at Rectidama, an excellent engine machine shop nearby. The process begins with the complete dismantling of the head, followed by ultrasonic cleaning in ...

Carsguide reader Paul Rand asked us about rocker arm failures on the Holden Captiva and we said we would contact Holden and ask about the issue. Here is the company's response. Some early Captivas ...

The stock LS rocker arm is a wonderful piece of engineering. It's light, small, and very rigid with a 1.7:1 rocker ratio. It's even blessed with a needle bearing fulcrum.