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When replacing the factory alvesprings, it is a good idea to remove the factory press-fit rocker studs and replace them with more durable screw-in versions. The Vortec heads come with excellent positive valve-guide seals for both the intake and exhaust.
It's A Spring Thing

When replacing the factory alvesprings, it is a good idea to remove the factory press-fit rocker studs and replace them with more durable screw-in versions. The Vortec heads come with excellent positive valve-guide seals for both the intake and exhaust.  View Related Article

 

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