SEMA 2025 always brings out the most intriguing new hardware, but few parts drew as much steady attention as the latest valvetrain components from PRW Power. Tucked into their display was a redesigned system built to solve the specific stability and oiling problems that LS engines are known for. PRW Power’s Director of Engineering, Shaun Snow, walked us through the new components and broke down the updates that give these LS rocker arms more consistent lubrication and a much stronger overall foundation.
Direct Oiling Redefined
One of the most critical updates to the system is the direct-oiling path that feeds lubricant straight into the needle bearings. Instead of relying on splash oiling or inconsistent distribution across the top end — which can be a nightmare with tall valve covers — the rocker body routes oil from the pushrod, through the rocker, and directly into the bearings. Snow explained the mechanics simply: “Oil comes up through the pushrod, goes down, and comes back out to the nose.” A small hole in the bearing race ensures the needle bearings are constantly bathed in oil, rather than hoping the spray reaches them.
Shaft-Mount LS Rocker Arms Options
PRW Power didn’t stop at the standard mount; they also introduced a shaft-mounted version of the system. This setup utilizes the same robust rocker bodies but rides on a shaft manufactured by industry leader CHE Precision. The upgraded bushings include a modified oil hole that allows the assembly to oil in a pattern similar to a main bearing surface. Snow noted that these will be available in both adjustable and non-adjustable versions, with fitments for cathedral-port, stock square-port, and AFR square-port heads.
Material and Ratio Logic
The bodies for these new components are constructed from robust chromoly-style steel, such as 8620, and they retain the factory’s 1.7 ratio. When asked about higher-ratio options, Snow was pragmatic, noting that demand is low because higher ratios often introduce clearance headaches in the tight confines of an LS head. He advised that increasing cam lobe lift is usually more effective. PRW Power also plans to revisit an LS7 version due to renewed interest from builders. With inventory now available, PRW Power’s latest LS rocker arms provide improved oiling and a stronger valvetrain foundation for anyone looking to enhance reliability.
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