Electro Polished Performance Valve Springs
Dual
145 @ 1.900
335 @ 1.300
Polished
Hyd. Roller
Mech. FT

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"

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

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"

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
1.539
1.125
1.000
0.760
140 @ 1.940
425 @ 1.250
413
0.730

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

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"