Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
Howards Cams Max Effort Mechanical Roller Valve Springs 98630-1
Part Number: HRS-98630-1
Howards Cams Max Effort Mechanical Roller Valve Springs
Valve Springs, Dual, 1.539 in. Outside Diameter, 510 lbs./in. Rate, 1.150 in. Coil Bind Height, Single
See More Specifications
|
Check the Fit
Estimated Ship Date: Dec 29, 2026
Overview
Brand:
Manufacturer's Part Number:
98630-1
Part Type:
Product Line:
Summit Racing Part Number:
HRS-98630-1
UPC:
840793125876
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.720 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.539 in.
Coil Bind Height (in.):
1.150 in.
Damper Spring Included:
Yes
Spring Rate (lbs./in.):
510 lbs./in.
Inside Diameter of Outer Spring (in.):
1.125 in.
Inside Diameter of Inner Spring (in.):
0.731 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold individually.
Installed Height (in.):
1.920 in.
Seat Pressure at Installed Height (lbs.):
194 lbs.
Open Height (in.)(application):
1.200
Open Pressure (lbs.):
505 lbs.
Remanufactured:
No
Howards Cams Max Effort Mechanical Roller Valve Springs
Howards Cams Max Effort mechanical roller valve springs are made using only the highest quality valve spring wire. CNC-coiled and heat-treated in the finest facilities available, these valve springs are stress-relieved, ground, and shot-peened. Whether you're running a flat tappet or roller cam in your drag race, Circle Track, road course, performance marine, or other extreme race application, Howards offers the perfect valve springs to suit your needs.
Applications
Loading...
Loading...
Questions & Answers
Ask a Question
What type of question would you like to submit?
I have a Customer Service question
(order, shipping, returns, protection plans, etc.). Customer Service Question
(order, shipping, returns, protection plans, etc.). Customer Service Question
- OR -
I would like to ask other customers
a question about this Product. Product Related Question
a question about this Product. Product Related Question
Loading...
Reviews Write a Review
Some parts are not legal for use in California or other states with similar laws / regulations
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.
Email this page
