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Butler Spring Kit, Crower Dual Valve Springs, Flat Tappet, Retainers, locks, seals, shims, Cast Iron Heads


Butler Spring kit with valve springs, retainers, locks, seals, shims and install tool. For Cast Iron Heads

Pricing: $349.95



Crower Valve Springs 1.600" Installed Height (113 lbs.) 284 lbs@1.100"/304lbs.@1.050 / Coil Bind .950", 1.405" OD (Set)


*Can use up to .590lift on cast iron Pontiac heads without cutting spring seats*


Comp Retainers

Comp Locks,

Viton Valve Stem Seals w/install tool

Assortment of shims



Shipping Information

  • Item Requires Shipping
  • 10.0 lbs.

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