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Manley Street Master Valve Springs
Valve Spring, Single, 1.250 in. Outside Diameter, 357 lbs./in. Rate, 1.180 in. Coil Bind Height, Each
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Estimated Ship Date from Texas: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
22409-1
Part Type:
Product Line:
Summit Racing Part Number:
MAN-22409-1
UPC:
807298046211
Valve Spring Style:
Standard
Number of Springs Per Valve:
Single
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.250 in.
Coil Bind Height (in.):
1.180 in.
Damper Spring Included:
Yes
Spring Rate (lbs./in.):
357 lbs./in.
Inside Diameter of Outer Spring (in.):
0.865 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold individually.
Make:
CHEVROLET
Engine Family:
Chevy small block Gen I
Installed Height (in.):
1.700 in.
Seat Pressure at Installed Height (lbs.):
110 lbs.
Open Height (in.)(application):
1.210
Open Pressure (lbs.):
357 lbs.
Remanufactured:
No
Manley Street Master Valve Springs
Better designed valve springs using state-of-the-art machinery for purpose-built racing engines. Manley Street Master valve springs are manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum fatigue life. They feature a proprietary multi-step heat-treating that minimizes load loss and have computer-aided modeling to minimize valve bounce and valve gear separation. Manley Street Master valve springs feature a small diameter and are lightweight, allowing engines to rev higher faster. They have an extended tip thickness to eliminate overload breakage and their tightly controlled open-end flatness reduces valve stem side loading.
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