Isky Performance Valve Springs
Style: Dual with Damper
Outer O.D.: 1. 530"
Closed Pressure: 135 @ 1.875"
Open Pressure: 380 @ 1.250"
Coil Bind: 1.160"

Isky Performance Valve Springs
Style: Single with Damper
Outer O.D.: 1. 260"
Closed Pressure: 130 @ 1.750'
Open Pressure: 320 @ 1.200"
Coil Bind: 1.130"

Hi-Tech Racing Products, High Performance Dual Valve Springs
Style: Pacaloy Dual
Outer O.D.: 1.374"
Closed Pressure: 110 @ 1.880"
Open Pressure: 345 @ 1.330"
Coil Bind: 1.270"

Performance Street/Strip Valve Springs
Set of 16
1.437
0.760
130 @ 1.750
285 @ 1.250
300
1.062
0.625

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

Hi-Tech Racing Products LT-1/Z-28 Chev SB Valve Springs
Style: Single with Damper
Outer O.D.: 1.250"
Closed Pressure: 120 @ 1.700"
Open Pressure: 300 @ 1.250"
Coil Bind: 1.160"

Performance Street/Strip Valve Springs
Set of 16
1.265
0.875
110@1.800
340@1.250
425
1.150
0.570

Electro Polished Performance Valve Springs
130 @ 1.875
330 @ 1.300
Polish
348 Rate/1.150 Coil Bind

Stock Dia. Valve Springs
AMC
Chev
Chry
Ford
1.514
1.125
0.937
0.697
130 @ 1.875
330 @ 1.300
348
0.670

Howards Cams Hydraulic Roller/Mechanical Flat Tappet Valve Springs
Style: Dual
Outer O.D.: 1.470"
Closed Pressure: 110 @ 1.880"
Open Pressure: 350 @ 1.330"
Coil Bind: 1.270"

Howards Cams Hydraulic Flat Tappet Valve Springs
Style: Single with Damper
Outer O.D.: 1.525"
Closed Pressure: 125 @ 1.875"
Open Pressure: 350 @ 1.375"
Coil Bind: 1.200"

Stock Dia. Performance Springs
Chev
Chry
Ford
351W/C/M/400