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This shaft-mount rocker system for big-block engines using Brodix 2+/Dart 320/360 heads combines 2024 aluminum rockers with an 8620 hardened steel shaft and is specified at a 1.7 ratio. The design adds rigidity and valve-train stability to better transfer cam power to the valves. As with other shaft systems, valve cover spacers or alternate covers may be required for proper fitment.
COMP Cams Shaft Rocker BBC BDX2+ Dart 320/3
