Inverted Conical Valve Springs
GM Gen III LS1/2/6
1.055/1.289
0.660/0.880
102@1.800
260@1.200
265
0.600

Howards Cams Hydraulic/Mechanical Flat Tappet Valve Springs
Style: Single with Damper
Outer O.D.: 1.265"
Closed Pressure: 125 @ 1.750"
Open Pressure: 340 @ 1.250"
Coil Bind: 1.150"

Perf Hyd. Roller/Mech.
Flat Tappet Valve Springs
1.265
0.875
122@ 1.800
375@ 1.250
460
0.640
1.100

Race Saver Yellow Stripe Valve Springs
Set 16
1.265
0.875
122 @ 1.800
375 @ 1.250
460
0.640
1.100

Howards Cams Hydraulic/Mechanical Flat Tappet Valve Springs
Style: Single with Damper
Outer O.D.: 1.250"
Closed Pressure: 115 @ 1.700"
Open Pressure: 300 @ 1.250"
Coil Bind: 1.160"

Electro Polished Performance Valve Springs
16 Pc.
1.265
0.875
115 @ 1.800
380 @ 1.200
430
0.640
1.100

Hydraulic Roller/Mechanical Flat Tappet Valve Springs
Style: Single with Damper
Outer O.D.: 1.265"
Closed Pressure: 125 @ 1.800"
Open Pressure: 375 @ 1.200"
Coil Bind: 1.150"

Howards Cams Hydraulic Flat Tappet Valve Springs
Style: Single with Damper
Outer O.D.: 1.437"
Closed Pressure: 100 @ 1.750"
Open Pressure: 235 @ 1.100"
Coil Bind: 1.050"

Stock Diameter Perf.
Valve Springs
Chry
Ford SB
1.445
1.040
120 @ 1.680
295 @ 1.175
347
1.125
0.500

Howards Cams Hydraulic Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1. 437"
Closed Pressure: 135 @ 1.750"
Open Pressure: 285 @ 1.250"
Coil Bind: 1.125"