Factory Mast LT Cylinder Head - Dual Valve Spring & Titanium Retainer Kit - 0.660 Lift

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Fits Factory Mast LT and GM OE Casting Heads - Factory Valve Guide

Specs:

  • Rated Valve Lift 0.660 inches
  • Installed Height 1.800 @ 166 lbs
  • Spring Rate: 403#/in
  • Solid Height 1.015
  • Spring OD 1.310"
  • Spring ID 0.680"
  • Works with aftermarket 0.575 Valve Guide

Kit includes:

  • Dual Valve Springs
  • Titanium Retainers
  • Custom Thick Chrome Moly Spring Seats
  • Valve Stem Seals
  • Billet Machined Chrome Moly Valve Locks

Product Details:

  • Manufactured in the USA
  • Premium Chrome Silicon Vanadium Spring Wire
  • Polished Isotropic Super Finishing & Cryo Treated
  • Titanium 6AL4V Grade 5 titanium retainers
  • Machined & Hardened and Black Oxide Precision Spring Seats