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COMP Cams Engine Valve Spring

Part # 978-1SKU COM978-1

Universal fit

Specifications
BrandCOMP Cams
Part typeEngine Valve Spring
Amazon ASINB00062YRCY
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 ReasonNo impact on pollution output of vehicle.
Coil Bind Height1.195 in
Compatible .570" Guide Diameter Spring Seat4770-1
Compatible Retainer740-1
Compatible Shims4755
Compatible Spring Cup (O.D. Locator)4704-1
DamperYes
Inner Spring Inside Diameter0.697 in
Number of Springs2
Outer Spring Inside Diameter1.06 in
Outer Spring Outside Diameter1.46 in
Seat Height1.85 in
Seat Pressure127 PSI
Spring Rate403
UPC / GTIN00036584272007

Description

Dual Valve Springs from COMP Cams are manufactured from Super Clean wire and subject to extensive quality control testing to deliver a valve spring assembly with superior strength, durability and valve train stability, no matter what the application. The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications. COMP Cams Dual Valve Springs exceed the expectations of today's engine builders and racers.