Single w/Damper Performance Spring
1.535 Dia.
125 @ 1.875
350 @ 1.375
1.100

Howards Cams Hydraulic Roller/Mechanical Flat Tappet Valve Springs
Style: Dual
Outer O.D.: 1.500"
Closed Pressure: 145 @ 1.940"
Open Pressure: 425 @ 1.250"
Coil Bind: 1.100"

Electro Polished Performance Valve Springs
1.539
1.125
1.000
0.760
140 @ 1.940
425 @ 1.250
413
0.730

Max Effort Mech. Roller Valve Springs
Dual w/Damp
1.539
1.125
1.015
0.731
194 @ 1.920
505 @ 1.200
510
0.720

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 Hydraulic Flat Tappet Valve Springs
Style: Single with Damper
Outer O.D.: 1.550"
Closed Pressure: 145 @ 1.880"
Open Pressure: 350 @ 1.250"
Coil Bind: 1.200"

Electro Polished Performance Valve Springs
1.539
1.125
145 @ 1.880
350 @ 1.250
335
0.670
1.200

Hi-Tech Racing Products Performance Springs
Style: Single with Damper
Outer O.D.: 1.540"
Closed Pressure: 145 @ 1.880"
Open Pressure: 355 @ 1.250"
Coil Bind: 1.050"

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"

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"