NEW HYD-ROLLER VALVE LIFTERS & TAPPETS GM262-400,RETROFIT STYLE,V/BAR,8PRS,'55-87 Steel High Performance Hydraulic Roller Lifters / Roller Valve Tappets GM BBC Gen VI, 454/496/502 Original With Hyd-Roller Cam block '96-08 GM BBC Mark IV, GEN V 396/402/427/454/502 Retrofit Pre-hydraulic Roller cam block to Hyd-Roller Cam '65-95 Steel Body Outside Diameter : 0.842" Steel Wheel Diameter : 0.700" Effective Working Length : 2.500" (Seat High)…