Racing Springs
1300 Series 
1.500 OD
2.150 Install Height 
0.950 Lift
780 Rate
1.130 Coil Bind
Set of 16

Racing Springs
1.645 Triple
Drag Race
Brackets
Set of 16

PAC 1300 Series Drag Racing Valve Springs
Style: Dual with Damper
Outer O.D.: 1.574"
Closed Pressure: 265 @ 2.000"
Open Pressure: 705 @ 1.200"
Coil Bind: 1.150"

Comp Cams, Hi-Tech Roller Valve Springs
Style: Triple
Outer O.D.: 1.645"
Closed Pressure: 338 @ 2.000"
Open Pressure: 849 @ 1.250"
Coil Bind: 1.145"

PAC 1300 Series Drag Racing Valve Springs
Style: Dual with Damper
Outer O.D.: 1.564"
Closed Pressure: 250 @ 2.000"
Open Pressure: 670 @ 1.200"
Coil Bind: 1.140"

Isky, Tool Room "Gold Stripe" Roller Valve Springs
Style: Dual 
Outer O.D.: 1.560"
Closed Pressure: 245 @ 1.950"
Open Pressure: 590 @ 1.250"
Coil Bind: 1.150"

Pro-Alloy Mechanical Roller Valve Springs
Triple
1.660
0.635
350 @ 2.100
1020 @ 1.200
745
1.145
0.895

Isky, Tool Room "Gold Stripe" Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.560"
Closed Pressure: 245 @ 1.970"
Open Pressure: 585 @ 1.290"
Coil Bind: 1.190"

Manley, NexTek® Roller Valve Springs
Style: Triple
Outer O.D.: 1.677"
Closed Pressure: 350 @ 2.000"
Open Pressure: 895 @ 1.270"
Coil Bind: 1.160"

Racing Springs
1.550 Dual
Drag Race
0.800 Lift
Set of 16