Perf Hyd. Roller/Mech.
Flat Tappet Valve Springs
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"

1.260" Dia. "PAC" Valve Springs
Set of 16
410 @ 1.200
540 Rate
550 Max Lift

Small Diameter (1.374") Dual Valve Springs
455 @ 1.250
436 Rate
0.700 Max Lift
Set of 16

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
Grand National Street Roller Springs
1.437 Dia

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"