Custom Shelby Engine Company Stainless Steel Roller Tip Rocker Arms (set) Shelby's Rocker Arm assembly eliminates a traditional FE valve train weak link by providing a flex-free assembly for precise rocker arm geometry. Roller tip equipped rocker arms are investment cast stainless steel, delivering a precise 1.76:1 ratio. Assemblies feature rifle drilled chrome moly steel shafts, supported by billet aluminum shaft supports and end stands. Shelby Rocker Arm Assemblies utilize standard factory oil passages and do not require special push rods or machine work. These 427 stainless steel rocker arms are bolt-on replacements for factory 390/427/428 cast iron cylinder heads. Due to intake port location, rocker arm assemblies are not compatible with original factory 427 high-riser cast iron FE heads.
• Rocker Arm: 17-4 investment cast stainless steel
• Rocker arm ratio: 1.76:1
• Rocker fulcrum type: Bronze Bushing
• Rocker shaft: Chrome moly steel
• Rocker shaft and end support material: Billet aluminum