COMP Cams Beehive Hustler Springs for GM 604/CT525 LS Crate Engine H604-16

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Specifications:

BrandCOMP Cams
Part NumberH604-16
GTIN00036584409465
Installed Height1.8 in
Coil Bind Height1.181 in
Spring Rate386 ppi
Bottom Inside Diameter0.86
Bottom Outside Diameter1.282
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.
Compatible Chromemoly Steel Retainer774-1
Compatible Shims4753
Compatible Spring Seat / Seals528-kit
Compatible Titanium Retainer722-1
Compatible Tool Steel Retainer1772-1
DamperNo
Number Of Springs1
Open Load304
Seat Pressure92
Spring StyleBeehive
Top Inside Diameter0.655
Top Outside Diameter1.077
Valve Spring SeriesPerformance Street

Specifications:

Description:

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.