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that can be heat-treated to deliver tensile strengths between 180
Application: Small Block Large Journal
Weight: 650
CNC Machined
Engine Pro Performance O.D. Valve Spring Cups 03-2006-16 that can be heat-treated toEngine Pro Performance O. D. Valve Spring Cups 03 2006 16 Specifications Spring O. D.: 1. 550 Cup O. D.: 1. 740 Cup I. D.: . 635 Shoulder Height: . 158 Thickness: . 062 Applies to: N A Description: Our O. D. spring cups are manufactured from 4140 steel case hardened to a minimum of . 010" ensuring proper spring location and long life even under extreme spring pressure conditions in today's high performance engines. Heat Treated CNC Machined Black