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Howards Cams Ovate Inverted Conical Valve Springs 98115-1
Part Number: HRS-98115-1
Howards Cams Ovate Inverted Conical Valve Springs
Valve Spring, Single, 1.290 in. Outside Diameter, 270 lbs./in. Rate, 1.150 in. Coil Bind Height, Each
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Estimated Ship Date: Nov 9, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
98115-1
Part Type:
Product Line:
Summit Racing Part Number:
HRS-98115-1
Item Number:
1282926
UPC:
840793125081
Valve Spring Style:
Beehive
Number of Springs Per Valve:
Single
Maximum Valve Lift (in.):
0.600 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.290 in.
Coil Bind Height (in.):
1.150 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
270 lbs./in.
Inside Diameter of Outer Spring (in.):
0.880 in.
Inside Diameter of Inner Spring (in.):
0.660 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Outside diameter at top of spring is 1.055 in. Inside diameter at top of spring is 0.670 in. Will work with stock-style retainers.
Installed Height (in.):
1.800 in.
Seat Pressure at Installed Height (lbs.):
110 lbs.
Open Height (in.)(application):
1.200
Open Pressure (lbs.):
275 lbs.
Howards Cams Ovate Inverted Conical Valve Springs
Howards Cams Ovate inverted conical valve springs offer increased harmonic resistance for greater spring stability. They require less spring pressure for better valve control. This design is well known for GM Gen III, LS1, LS2, and LS6 applications but will also work for other applications. They're performance replacements featuring precision winding, heat-treating, and finishing processes. These springs are designed for stock-style retainers.
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