COMP Cams 7228-1 - Conical Valvespring, .650/.920 D, 438Lb R
Race Street 1.290" OD Conical Spring, 1.800" Installed Height, 1 Spring
1.030/1.286" OD Conical Spring
1 Spring
Outer Bottom Spring Outside Diameter: 1.286
Outer Top Spring Inside Diameter: 0.662
Outer Top Spring Outside Diameter: 1.03
Seat Height: 1.8
Seat Pressure: 136
Spring Rate: 440
Valve Spring Series: Race/Street
Amazon ASIN: B00N6LQEHI
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. Exempt for On-Road Vehicles?: Yes
C.A.R.B. Exemption Reason: No impact on pollution output of vehicle.
C.A.R.B. E.O. Number: N/A
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 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.
Coil Bind Height: 1.125
Compatible .570" Guide Diameter Spring Seat: 4677-1
Compatible Retainer: 788-1
Compatible Shims: 4753
Damper: No
Number of Springs: 1
Outer Bottom Spring Inside Diameter: 0.918