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"

Electro Polished Pro-Alloy Mechanical Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.540"
Closed Pressure: 215 @ 1.950"
Open Pressure: 575 @ 1.230"
Coil Bind: 1.190"

Pro-Alloy Mechanical Roller Valve Springs
Style: Dual
Outer O.D.: 1.550"
Closed Pressure: 209 @ 1.900"
Open Pressure: 525 @ 1.300"
Coil Bind: 1.080"

Electro Polished Pro-Alloy Mechanical Roller Valve Springs
Style: Dual
Outer O.D.: 1.550"
Closed Pressure: 209 @ 1.900"
Open Pressure: 525 @ 1.300"
Coil Bind: 1.080"

Max Effort™ Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.539"
Closed Pressure: 194 @ 1.920"
Open Pressure: 505 @ 1.200"
Coil Bind: 1.150"

Howards Cams Electro Polished Performance Valve Springs
Style: Dual with Damper
Outer O.D.: 1.539"
Closed Pressure: 140 @ 1.940"
Open Pressure: 425 @ 1.250"
Coil Bind: 1.150"

Max Effort™ Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.557"
Closed Pressure: 225 @ 1.950"
Open Pressure: 555 @ 1.250"
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"

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"

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"

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"