Comp Cams GT40CS-KIT Valve Spring Kit for Ford GT40, GT40P Cylinder Heads is a complete drop-in Valve Spring Kit for Ford GT40 or GT40P Cylinder Heads with a .570 in. max valve lift.

Comp Cams GT40CS-KIT Valve Spring Kit Specs:

• Suited for Flat Tappet Camshafts
• Allows up to .570 in. valve lift and can handle aggressive lobe profiles
• Retainer Material: Chromoly
• Valve Stem Size: 11/32 in.
• Max Lift: 0.570 in.
• Installed Height: 1.800 in.
• Coil Bind Height: 1.170 in.
• O.D. of Outer: 1.486 in.
• I.D. of Outer: 1.052 in.
• Valve Lock Type: 10 Degree
• Spring Style: Single
• Spring Seats Type: Non-Integrated
• Spring Rate: 416 (lbs/in)
• Valve Seals Type: Positive Stop
• Load at Installed Height: 110 lbs.
• Load at Open Height: 318 lbs.
• Valve Stem Seal Material: Viton
• Valve Spring Finish: Raw
• Open Height: 1.300 in.
• Machine Work Required No