Dual Valve Springs

Crane Cams Dual valve springs are available for hydraulic, mechanical (flat tappet) and roller lifter camshafts, for street performance and all-out competition. Various designs are offered including dual, dual with flat dampers, different O.D. dimensions, with varying seat pressures and closed heights.
Crane Dual valve springs are selectively magnaflux inspected and checked for tension. Many "hard-core" springs are individually magnaflux inspected, tension matched and placed in sets.

Sets of 16

GM LS1 Performance hydraulic roller cams,
Spring O.D. 1.218"
Closed Pressure 91@1.30"
Open Pressure 220@.900"
Coil Bind 0.783"
Max Lift 0.650"

Drag Race & Circle Track roller cams with 1.950-2.000" installed heights, 1.551 O.D.
Closed Pressure 226@2.000"
Open Pressure 717@1.250"
Coil Bind 1.150"
Max Lift 0.790"

AMC 6 cylinder, Buick V-8 Many performance cams with short assembly heights requiring high lifts and moderate spring rate.
Spring O.D. 1.465"
Closed Pressure 112@1.625"
Open Pressure 366@1.100"
Coil Bind 0.950"
Max Lift 0.690"

Solid street rollers/bracket racing,Big-Block high performance hydraulic rollers with tall assembly heights, Spring O.D. 1.565"
Closed Pressure 190@1.950"
Open Pressure 552@1.250"
Coil Bind 1.200"
Max Lift 0.690"

Drag Race roller cams
with approximately 2.00" installation heights, *H-11 spring
Spring O.D. 1.625"
Closed Pressure 244@2.000"
Open Pressure 801@1.150"
Coil Bind 1.090"
Max Lift 0.850"

Bracket racing & Circle track roller cams, *H-11 Spring* Spring O.D. 1.565"
Closed Pressure 215@1.950"
Open Pressure 685@1.200"
Coil Bind 1.121"
Max Lift 0.769"

Drag Race, Circle Track Roller Cams
Spring O.D. 1.551"
Closed Pressure 226@2.000"
Open Pressure 717@1.250"
Coil Bind 1.150"
Max Lift 0.790"

Chevrolet Big-Block hydraulic and flat tappet racing
Chevrolet Big-Block hydraulic roller cams, Ford 351/400 hydraulic roller cams, Ford Big-Block hyd roller cams, 1.530" O. D.
Closed Pressure 131@1.900"
Open Pressure 410@1.250"
Coil Bind 1.160"
Max Lift 0.630"

Buick V-6 & 350 V-8 1.212" O.D.
Spring O.D. 1.212"
Closed Pressure 93@1.550"
Open Pressure 266@.950"
Coil Bind 0.865"
Max Lift 0.650"

Spring O.D. 1.460"
Closed Pressure 130@1.850"
Open Pressure 402@1.150"
Coil Bind 1.080"
Max Lift 0.710"

Big-Block (Various)
hydraulic roller applications Spring O.D. 1.540"
Closed Pressure 144@1.900"
Open Pressure 403@1.300"
Coil Bind 1.175"
Max Lift 0.665"

Various Big-Block Hydraulic roller applications. Harmonics optimized for sustained high RPM marine use. Solid flat tappets with tall assembly heights.
Spring O.D. 1.540"
Closed Pressure 150@1.900"
Open Pressure 560@1.150"
Coil Bind 1.085"
Max Lift 0.755"