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5.7 hemi valve spring

  1. 5.7 Hemi Cam Upgrades

    Challenger Performance Mods - Engine - 5.7L HEMI
    Looking to upgrade to a bigger cam in my challenger. I have narrowed down the cam choices and now looking at to upgrade the springs and push rods. My question is what springs are a good option? Also are shims needed and are any other mods to the valve train needed when upgrading to a bigger cam...