VALVE MATERIAL: Stainless steel, hard chrome stems, hardened tip.
VALVE SPRINGS: Single spring with damper, 1.250" diameter, installed height 1.750".
110# Seat @ 1.750" 280# @ .500" Seat pressure 85# with +.050" keepers.
Hardened keepers with 1 piece steel retainers.
OEM INTAKE FLANGE PATTERN. Accepts existing intake manifolds.
OEM EXHAUST FLANGE PATTERN. Accepts existing exhaust.
OEM VALVE COVER RAIL. Accepts existing valve covers.