Isky 8005PLUS Endurance Plus Valve Springs Dual w/ Damper .650" Max Lift Solid

• Style: Dual w/Damper
• Outer OD/ID: 1.530/1.110
• Inner OD/ID: 1.005/.730
• Seat Pressure: 140 Lbs @1.875
• Open Pressure: 400 Lbs @1.275
• Rate Per Inch: 420
• Coil Bind: 1.160
• Max. Net Lift: .650
• Type of Cam: Solid

The Endurance Plus series of valve springs from Isky Racing Cams utilizes a specially processed Tool Room Material outer spring for increased endurance/reliability. Endurance Plus springs are designed for late models, modifieds, etc., and are Spintron Test-Proven up to 8400 rpm for 850 racing miles.