Lightweight Racing Shovelhead™ 74 1966 to 1977 Valve Spring Kits


  • Max Lift: .600"
  • Installed Height: 1.510"
  • Seat Pressure: 150 lbs.
  • Open Pressure: 385 lbs @ .600" Lift

NOTE: Spring Kit 20-2110 features 4 lightweight, hard anodized 7075T-6 heat treated aluminum retainers offset .070" for taller installed height. Basewashers are counter-bored to accept a .665" OD seal.

Springs are engineered for each application using proprietary advanced spring design, simulation and analysis software. Engineers pay special attention to cam and spring harmonics, stress, mass and operating rpm. Premium grade, super clean ground chrome silicon wire is x-rayed at regular intervals to check for inclusions, heat treated  and shot peed to ensure maximum spring life.

Kits include 4 retainers, 4 springs, 4 steel keepers and 4 steel basewashers.

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Order No. Description Price Quantity
20-2110 7075T-6 Retainers (20-2100) $98.60
20-20450 Steel Retainers (20-20450) $98.60