Electro Polished Performance Valve Springs
0.760 ID
135 @ 1.750
285 @ 1.250
Electro Polished

Howards Cams Hydraulic Flat Tappet Valve Springs
Style: Dual
Outer O.D.: 1.435"
Closed Pressure: 105 @ 1.700"
Open Pressure: 320 @ 1.180"
Coil Bind: 1.120"

Howards Cams Hyd./Mech. Flat Tappet & Hydraulic Roller Valve Springs
Style: Dual
Outer O.D.: 1.465"
Closed Pressure: 122 @ 1.650"
Open Pressure: 353 @ 1.100"
Coil Bind: .950"

Howards Cams Hydraulic/Mechanical Flat Tappet Valve Springs
Style: Single with Damper
Outer O.D.: 1.485"
Closed Pressure: 105 @ 1.800"
Open Pressure: 288 @ 1.300"
Coil Bind: 1.250"

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

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"

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"

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

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

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

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

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