Description

Beehive Hustler Springs for GM 604/CT525 LS Crate Engine COMP Cams Hustler Valve Springs are an improved version of the popular GM LS6 "blue" valve spring. They are based on popular GM part #12499224 and #12565313 LS6 springs but with 4% higher seat and open loads for better dynamic control as well as an extra .020" of lift capability. They are an excellent performance upgrade in GM 603/604 and CT525 LS crate Race Applications with tight rules packages. Available individually under H604-1

• Specifications

  • Bottom Inside Diameter:0.86
  • Bottom Outside Diameter:1.282
  • Coil Bind Height:1.181
  • Compatible Chromemoly Steel Retainer: 774-1
  • Compatible Shims: 4753
  • Compatible Spring Seat / Seals: 528-KIT
  • Compatible Titanium Retainer: 722-1
  • Compatible Tool Steel Retainer: 1772-1
  • Damper: No
  • Installed Height:1.8
  • Number of Springs: 1
  • Open Load:304
  • Seat Pressure:92
  • Spring Rate: 386
  • Spring Style: Beehive
  • Top Inside Diameter:0.655
  • Top Outside Diameter:1.077
  • Valve Spring Series: Performance Street