Manley Ford 4.6L/5.4L SOHC NexTek Series High Performance Valve Springs (2 valves per cylinder) - 221437-16

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.

Specs

• Manley Valve Spring, SPRING-1.175 SINGLE
• Product Market: Domestic
• Average Gram Weight: 56
• Product Type: Engine Valve Spring
• Valve Spring Outer Diameter - Top: 1.030
• Valve Spring Inner Diameter - Top: 0.642
• Valve Spring Outer Diameter - Bottom: 1.175
• Valve Spring Inner Diameter - Bottom: 0.787
• Valve Spring Quantity: 16
• Valve Spring Series: NexTek? Series
• Valve Spring Type: Single Conical Ovate Wire
• Valve Spring Coil Bind Height: 1.080
• Valve Spring Rate: 255
• Valve Lift - Maximum: 0.580
• Installed Pressure and Height: 125 @ 1.680
• Open Pressure and Height: 265 @ 1.130
• Industry: Automotive
• Out of Stock Message: Call for Availability
• Title: Manley Valve Spring, SPRING-1.175 SINGLE
• Prop 65 Yes/No: Yes
• Prop 65 (C, R or CR): CR
• Prop 65 - Short Label: Prop 65 Warning Label.JPG
• Engine Type: ICE
• Make: Ford
• Engine: 4.6L Modular