Crower 74280F Features:

Ford 351N shaft rocker system with heavy-duty 5/8 in. shafts for maximum valvetrain stability CNC precision-machined ball race alloy steel shafts, heat-treated twice and micro-finish ground in-house Fully rollerized rocker arms with precision needle bearing fulcrums for reduced friction at high RPM Hardened tip wheels plus aircraft-quality 12-point hardware and lash adjusters for race-duty use

Shaft Rockers Ford 351N W 5/8 In. Shafts Rollerized Features:

• Heavy-duty 5/8 in. shafts for maximum valvetrain stability in high-performance Ford 351N applications
• CNC-machined ball race alloy steel shafts, double heat-treated and micro-finish ground for strength and reduced friction
• Fully rollerized rocker arms with precision needle bearing fulcrums for smoother operation at high rpm
• Hardened tip wheels with aircraft-quality 12-point hardware and lash adjusters for severe-duty valvetrain control
• Shaft-mounted racing rocker system engineered for Ford 351N engines in demanding performance and competition use