Manley, NexTek Roller Valve Springs
Style: Dual
Outer O.D.: 1.640"
Closed Pressure: 250 @ 2.000"
Open Pressure: 800 @ 1.150"
Coil Bind: 1.070"

Electro Polished Pro-Alloy Mechanical Roller Valve Springs
Style: Dual
Outer O.D.: 1.640"
Closed Pressure: 250 @ 2.000"
Open Pressure: 800 @ 1.150"
Coil Bind: 1.070"

PAC 1300 Series Drag Racing Valve Springs
Style: Dual
Outer O.D.: 1.500"
Closed Pressure: 250 @ 2.030"
Open Pressure: 614 @ 1.250"
Coil Bind: 1.180"

Pacaloy Mechanical Roller Springs
1.570 Dia.
275 @ 2.000 Seat
805 @ 1.200 Open
1.150 Coil Bind

Pacaloy Mechanical Roller Springs
1.550 Dia.
w/Special Processing
240 @ 1.900
625 @ 1.200
1.100

Isky, Tool Room "Gold Stripe" Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.560"
Closed Pressure: 245 @ 2.000"
Open Pressure: 600 @ 1.300"
Coil Bind: 1.200"

Isky, Tool Room "Gold Stripe" Roller Valve Springs
Style: Dual with Damper
Outer O.D.: 1.570"
Closed Pressure: 250 @ 2.030"
Open Pressure: 625 @ 1.300"
Coil Bind: 1.200"

Racing Springs
1.645 Triple
Drag Race
Pro Stock
Fuel
Set of 16