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PAC Racing Specialty & Class Specific Valve Springs PAC-1427
Part Number: RSC-PAC-1427
PAC Racing Specialty & Class Specific Valve Springs
Valve Spring, Specialty and Class Specific, Single, 1.454 in. O.D., 500 lbs./in. Rate, 1.190 in. Coil Bind Height, Each
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Estimated Ship Date: Nov 10, 2026 Would you rather pick it up?
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Overview
Brand:
Manufacturer's Part Number:
PAC-1427
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-1427
Item Number:
3070526
Valve Spring Style:
Conical
Number of Springs Per Valve:
Single
Maximum Valve Lift (in.):
0.625 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.454 in.
Coil Bind Height (in.):
1.190 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
500 lbs./in.
Inside Diameter of Outer Spring (in.):
1.000 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold individually.
Notes:
Designed for Stock Eliminator Big Block Drag Racing applications.
Make:
CHEVROLET
Engine Family:
Chevy big block Mark IV
Installed Height (in.):
1.850 in.
Seat Pressure at Installed Height (lbs.):
200 lbs.
Open Height (in.)(application):
1.250
Open Pressure (lbs.):
500 lbs.
Remanufactured:
No
PAC Racing Specialty & Class Specific Valve Springs
PAC Racing specialty and class specific valve springs are perfect for getting the final parts of your valvetrain dialed in and ready to run. Each valve spring is manufactured from the highest quality materials and precision-machined for an ideal fit on each application. They're available in intake drag and exhaust drag models. Order the style and specs preferred for your application.
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