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Howards Cams Electro Polished Pro-Alloy Mechanical Roller Valve Springs 98637-1
Part Number: HRS-98637-1
Howards Cams Electro Polished Pro-Alloy Mechanical Roller Valve Springs
Valve Spring, Dual, 1.550 in. Outside Diameter, 521 lbs./in. Rate, 1.190 in. Coil Bind Height, Each
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Estimated Ship Date: Dec 29, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
98637-1
Part Type:
Product Line:
Summit Racing Part Number:
HRS-98637-1
UPC:
840793125999
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.700 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.550 in.
Coil Bind Height (in.):
1.190 in.
Damper Spring Included:
Yes
Spring Rate (lbs./in.):
521 lbs./in.
Inside Diameter of Inner Spring (in.):
0.730 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold individually.
Installed Height (in.):
1.950 in.
Seat Pressure at Installed Height (lbs.):
225 lbs.
Open Height (in.)(application):
1.230
Open Pressure (lbs.):
600 lbs.
Remanufactured:
No
Howards Cams Electro Polished Pro-Alloy Mechanical Roller Valve Springs
When only the best will do, depend on these Howards Cams Electro Polished Pro-Alloy mechanical roller valve springs! Howards Cams took their state-of-the-art Pro-Alloy roller valve springs one step further with electro polishing, which enhances the material even further. By reducing localized stress areas, these springs offer even greater life expectancy.
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