Proform Parts 66864 Roller Rocker Arm Set 1.65 Ratio Shaft Mount Buick 455

Take your Buick 455 valve train to the next level of performance with this friction-reducing roller rocker system from Proform Parts. Engineered for serious engine builders, this shaft-mounted roller rocker system delivers improved valvetrain stability and reduced friction compared to traditional stamped steel rockers.

Key Features:

• 1.65:1 rocker ratio for enhanced valve lift and performance
• Shaft mount design provides superior stability and alignment
• Precision roller tip reduces friction and valve stem wear
• Billet aluminum construction for strength and light weight
• Compatible with standard Stage 1 and Stage 2 Buick 455 cylinder heads
• Includes adjusters for precise valve lash setting

Complete Kit Includes:

• 16 billet aluminum roller rockers with adjusters
• Two rocker shafts
• All necessary spacers and mounting hardware

Installation Note: Push rod holes may require additional clearance for proper fitment. This Premium Race Series rocker system is ideal for high-performance street engines and racing applications where valvetrain reliability is critical.