PSI Dual Valve Springs

PSI CT 1578 ML Dual Racing Valve Springs

$650.00 Set of 16, Free Shipping

PSI Performance Springs CT-1578-ML is a severe duty dual valve spring designed for solid roller valvetrain with added features. This model includes Max Life (ML) multi-step surface enhancement process to increase spring endurance. Designed for aftermarket cylinder heads with 1.378″ OD Dual Springs.

Type: Dual
Spring OD: 1.378″
Inner ID: .680″
Seat: 150 lbs @ 2.000″
Open: 640 lbs @ 1.150″
Recommended Lift: .850″

SKU: PSI-CT-1578-ML-16 Category: Tags: , ,

Coil Bind (max)1.140″

Part# CT-1578-ML (Single Spring)
Alt Part# CT-1578-ML-16 (Set of 16)
Description PSI Drag Race 1500 Series Dual Valve Spring
Outside Diameter 1.378″
Outer Spring ID .976″
Middle Spring N/A
Inner Spring ID 0.680″
Install Height 2.000″
Load at Installed Height 150 lbs
Spring Open Height 1.150″
Spring Open Load 640 lbs
Recommended Valve Lift .850″
Spring Rate (lbs/in) 576
Retainer Step
 N/A

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