Ferrea 5000 Series Hi Performance Exhaust Valve - SB Chevy - 1.500", 11/32" Stem Diameter, 4.935" Overall Length - (Set of 8) Hose Clamp Pliers including four-corner idle adjustment on

including four-corner idle adjustment on all models

No Drilling Or Trimming Req/Uses All Factory Mounting Points

Works with stock and aftermarket front control arms

1979-1981 GMC K2500 SuburbanFits 1968 to 1981 GM TH350

Ferrea 5000 Series Hi Performance Exhaust Valve - SB Chevy - 1.500", 11/32" Stem Diameter, 4.935" Overall Length - (Set of 8) Hose Clamp Pliers including four-corner idle adjustment onThe 5000 Series Valves have become the alternative for performance engine builders that use competitors "street" or "performance valve". These valves are produced in Ferrea's CNC centers allowing tight tolerances and cost effective design. They feature a one piece forging made from stainless steel, a special heat treatment process, hard chrome stems, and hard tip. Most applications are available in an undercut stem and dished head, while other