Elgin Performance Valve Springs
Style: Single with Damper
Outer O.D.: 1.500"
Closed Pressure: 121 @ 1.800"
Open Pressure: 298 @ 1.300"
Coil Bind: 1.130"
Note: Set of 8 (2 sets required per 8 cylinder)

Max Effort Roller Valve Springs
Style: Dual
Outer O.D.: 1.500"
Closed Pressure: 170 @ 1.800"
Open Pressure: 445 @ 1.250"
Coil Bind: 1.040"

PAC 1300 Series Drag Racing Valve Springs
Style: Dual
Outer O.D.: 1.500"
Closed Pressure: 250 @ 2.030"
Open Pressure: 614 @ 1.250"
Coil Bind: 1.180"

Howards Cams Pacaloy® Mechanical Roller Valve Springs w/ Special Processing
Style: Dual
Outer O.D.: 1.500"
Closed Pressure: 250 @ 2.030"
Open Pressure: 614 @ 1.250"
Coil Bind: 1.180"

Howards Cams Pacaloy® Mechanical Roller Valve Springs w/ Special Processing
Style: Dual
Outer O.D.: 1.500"
Closed Pressure: 300 @ 2.100"
Open Pressure: 1002 @ 1.200"
Coil Bind: 1.130"

PAC 1300 Series Drag Racing Valve Springs
Style: Dual
Outer O.D.: 1.500"
Closed Pressure: 375 @ 2.150"
Open Pressure: 1116 @ 1.200"
Coil Bind: 1.130"

Comp Cams Performance Valve Springs
Style: Dual with Damper
Outer O.D.: 1.509"
Closed Pressure: 112 @ 1.900"
Open Pressure: 355 @ 1.200"
Coil Bind: 1.175"

Howards Cams Performance Valve Springs
Style: Single with Damper
Outer O.D.: 1.510"
Closed Pressure: 100 @ 1.880"
Open Pressure: 275 @ 1.380"
Coil Bind: 1.300"

Howards Cams Mechanical Flat Tappet Valve Springs
Style: Dual with Damper
Outer O.D.: 1.514"
Closed Pressure: 130 @ 1.875"
Open Pressure: 330 @ 1.300"
Coil Bind: 1.150"

Howards Cams Electro Polished Performance Valve Springs
Style: Dual with Damper
Outer O.D.: 1.514"
Closed Pressure: 130 @ 1.875"
Open Pressure: 330 @ 1.300"
Coil Bind: 1.150"

Howards Cams Hydraulic Roller Valve Springs
Style: Dual
Outer O.D.: 1.514"
Closed Pressure: 145 @ 1.900"
Open Pressure: 360 @ 1.300"
Coil Bind: 1.270"

Howards Cams Hydraulic Flat Tappet Valve Springs
Style: Single with Damper
Outer O.D.: 1.485"
Closed Pressure: 125 @ 1.875"
Open Pressure: 350 @ 1.375"
Coil Bind: 1.200"