Description

Beehive Hustler Springs for GM 604/CT525 LS Crate EngineCOMP 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 controlas 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

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