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. Vehicle Specific

• Designed for use on GM 604 and CT525 Crate Engines. Also fits all GM LS engines including truck engines, excluding LS7.

Attributes:

• Brand Name: COMP Cams
• GTIN: 00036584409465
• Bottom Inside Diameter: 0.86
• Bottom Outside Diameter: 1.282
• C.A.R.B. E.O. Number: N/A
• C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?: Yes, but must meet tailpipe emission standards for year of vehicle.
• C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
• C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?: Yes, but must meet tailpipe emission standards for year of vehicle.
• C.A.R.B. Exempt for On-Road Vehicles?: Yes
• C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?: Yes, but must be a race/competition only vehicle.
• C.A.R.B. Exemption Reason: No impact on pollution output of vehicle.
• 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

Extended Information:

• Country of Origin: US
• Emissions : CARB Eligible

Packing Information:

• Quantity of Each: 1
• Package UOM: ST
• Dimension: 10.2 x 2.9 x 2.3 inches
• Weight: 3.21 POUNDS