Howards Cams Pacaloy® Mechanical Roller Valve Springs w/ Special Processing
Style: Dual with Damper
Outer O.D.: 1.574"
Closed Pressure: 265 @ 2.000"
Open Pressure: 705 @ 1.200"
Coil Bind: 1.150"

Pro-Alloy Mechanical Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.625"
Closed Pressure: 240 @ 2.000"
Open Pressure: 685 @ 1.250"
Coil Bind: 1.150"

Electro Polished Pro-Alloy Mechanical Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.625"
Closed Pressure: 230 @ 2.100"
Open Pressure: 620 @ 1.380"
Coil Bind: 1.150"

PAC 1200 Series Drag Racing Valve Springs
Style: Dual
Outer O.D.: 1.625"
Closed Pressure: 275 @ 2.000"
Open Pressure: 810 @ 1.150"
Coil Bind: 1.100"

Howards Cams Pacaloy® Mechanical Roller Valve Springs w/ Special Processing
Style: Dual
Outer O.D.: 1.625"
Closed Pressure: 275 @ 2.000"
Open Pressure: 810 @ 1.200"
Coil Bind: 1.100"

PAC 1200 Series Drag Racing Valve Springs
Style: Dual
Outer O.D.: 1.625"
Closed Pressure: 280 @ 2.100"
Open Pressure: 847 @ 1.150"
Coil Bind: 1.100"

Pro-Alloy Mechanical Roller Valve Springs
Style: Dual
Outer O.D.: 1.640"
Closed Pressure: 250 @ 2.000"
Open Pressure: 800 @ 1.150"
Coil Bind: 1.070"

Electro Polished Pro-Alloy Mechanical Roller Valve Springs
Style: Dual
Outer O.D.: 1.640"
Closed Pressure: 250 @ 2.000"
Open Pressure: 800 @ 1.150"
Coil Bind: 1.070"

Manley, NexTek Roller Valve Springs
Style: Dual
Outer O.D.: 1.640"
Closed Pressure: 250 @ 2.000"
Open Pressure: 800 @ 1.150"
Coil Bind: 1.070"

Comp Cams, Hi-Tech Roller Valve Springs
Style: Dual
Outer O.D.: 1.645"
Closed Pressure: 253 @ 2.050"
Open Pressure: 711 @ 1.250"
Coil Bind: 1.150"

Howards Cams Pacaloy® Roller Valve Springs
Style: Dual
Outer O.D.: 1.625"
Closed Pressure: 275 @ 2.000"
Open Pressure: 810 @ 1.150"
Coil Bind: 1.100"