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PAC Racing Hot Rod Series Valve Springs
Valve Springs, Hot Rod Series, Dual, 1.290 in. O.D., 370 lbs./in. Rate, 1.010 in. Coil Bind Height, Each
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Estimated Ship Date: Nov 10, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
PAC-1904
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-1904
Item Number:
3070637
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.625 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.290 in.
Coil Bind Height (in.):
1.010 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
370 lbs./in.
Inside Diameter of Outer Spring (in.):
0.950 in.
Inside Diameter of Inner Spring (in.):
0.694 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold individually.
Make:
CHEVROLET
Engine Family:
Chevy small block Gen III/IV (LS-based engines)
Installed Height (in.):
1.800 in.
Seat Pressure at Installed Height (lbs.):
150 lbs.
Open Height (in.)(application):
1.125
Open Pressure (lbs.):
400 lbs.
Remanufactured:
No
PAC Racing Hot Rod Series Valve Springs
PAC Racing Hot Rod Series valve springs offer the engine and hot rod builder a mild upgrade or replacement for their hot rod. They are available in a variety of spring rates and diameters to accommodate your specific engine and camshaft profile.
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Some parts are not legal for use in California or other states with similar laws / regulations
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