Butler Spring kit with valve springs, retainers, locks, seals, shims and install tool (for Viton Seals). For Cast Iron Heads
Hyd roller springs for C.I. Pontiac heads: 140 psi @ 1.600 / 350 @ .500 lift / 375 @ .550 lift .940" O.D. Outer: 1.465" I.D. Outer: 1.091" I.D. Inner: .807
Comp Retainers
Comp Locks,
Viton Valve Stem Seals w/install tool
Assortment of shims
