Skip to content
PAC Racing Springs
×
  • ShopExpand
    • Valve SpringsExpand
      • Drag Race
      • Circle Track
      • Street Performance
      • Diesel
      • Motorcycle
    • Spring RetainersExpand
      • 300 Series
      • 400 Series
      • 500 Series
      • 600 Series
      • 700 Series
    • Valve Locks
    • Seats & ShimsExpand
      • Chromoly
      • Tool Steel
      • Shim Kits
      • Shims
      • Step Seats
    • Valvetrain Tools
  • ResourcesExpand
    • FAQ
    • Downloads
    • Product Catalogs
    • Spring Rate Calculator
    • Technical Info
  • About UsExpand
    • About PAC
    • What we do
  • Contact Us
Account
Login/ Sign Up
Facebook Twitter Instagram YouTube
PAC Racing Springs

Home / Online Tools

Online Tools

Spring Rate Calculator

Use this valve spring calculation tool to enhance and fine tune your spring and cylinder head installation.

Bump Stop Rate Curve

Schroeder Stock Car Sway Bar Rate Charts

  • 7/8″ x 26″ bars solid effective length 22″ – Chart
  • 7/8″ x 26″ bars solid effective length 22″ – Graph
  • 7/8″ x 28″ bars solid effective length 24″ – Chart
  • 7/8″ x 28″ bars solid effective length 24″ – Graph
  • 7/8″ x 43″ bars solid effective length 33″ – Chart
  • 7/8″ x 43″ bars solid effective length 33″ – Graph
  • 37 1/2 Long Bars Hollow 1 1/2″ 48 Spline Ends
  • 37 1/2 Long Bars Hollow 1 3/4″ 48 Spline Ends
  • 37 1/2 Long Bars Hollow 2″ 48 Spline Ends
  • 37 1/2 Long Bars Hollow 2″ & 13/4″ 48 Spline Ends
  • 37 1/2 Long Bars Hollow 1 1/4″ 49 Spline Ends

Schroeder Torsion Bar Spring Rate Charts

  • 1 1/8″ x 26″ bars hollow tubular effective length 20″
  • 1 1/8″ x 29″ bars hollow tubular effective length 23″
  • 1 1/8″ x 26″ bars solid and hollow effective length 23″
  • 1 1/8″ x 30″ bars hollow tubular effective length 23″
  • 1 1/8″ x 30″ bars solid and hollow effective length 24″
  • 1″ x 26″ bars hollow effective length 22″
  • 1″ x 26″ bars solid effective length 22″
  • 1″ x 28″ bars hollow effective length 24″
  • 1″ x 28″ bars solid effective length 24″
  • 3/4″ x 23″ bars solid effective length 19.5″
  • 7/8″ x 14.5″ bars solid effective length 10.75″
  • 7/8″ x 22.5″ bars solid and hollow effective length 18.5″
  • 7/8″ x 24″ bars solid effective length 20″
  • 7/8″ x 24.5″ bars solid and hollow effective length 20.5″
  • 7/8″ x 26″ bars hollow effective length 22″
  • 7/8″ x 26″ bars solid effective length 22″
  • 7/8″ x 28″ bars hollow effective length 24″
  • 7/8″ x 28″ bars hollow effective length 24″

Customer Service

Need help, call 1-866-799-9417

Free Shipping

On Qualifying Orders over $999
(Continental US Only)

Free Returns

On Orders less than 30 days
(Some Exclusion Apply - Click Here)

Shop

Valve Springs

Spring Retainers

Valve Locks

Seats & Shims

Valvetrain Tools

Our Brands

About PAC

Race Winning Brands Family

Race Winning Brands International

Privacy Policy

Customer Service

Contact Us

Return Policy

Terms and Conditions

MRP Policy

Accessibility Statement

California Consumer Privacy Act (CCPA) Opt-Out IconYour Privacy Choices
Notice at Collection

Have a Question?

Call us at +1-866-799-9417

Facebook Twitter Instagram YouTube

COPYRIGHT © 2025 PAC RACING SPRINGS. ALL RIGHTS RESERVED. PAC RACING SPRINGS IS PART OF THE RACE WINNING BRANDS FAMILY.

Review Cart

No products in the cart.

  • Shop
    • Valve Springs
      • Drag Race
      • Circle Track
      • Street Performance
      • Diesel
      • Motorcycle
    • Spring Retainers
      • 300 Series
      • 400 Series
      • 500 Series
      • 600 Series
      • 700 Series
    • Valve Locks
    • Seats & Shims
      • Chromoly
      • Tool Steel
      • Shim Kits
      • Shims
      • Step Seats
    • Valvetrain Tools
  • Resources
    • FAQ
    • Downloads
    • Product Catalogs
    • Spring Rate Calculator
    • Technical Info
  • About Us
    • About PAC
    • What we do
  • Contact Us
×