Ferrea 5000 Series Hi Performance Exhaust Valve - SB Chevy - 1.600", 11/32" Stem Diameter, 4.910" Overall Length - (Set of 8) 4031 1/8" NPT female right angle

1/8" NPT female right angle to -4AN male fitting

Comes with all necessary hardware and the threads are Heli-coiled

Severe Duty Cutaway

22 in Radiators

Rear Spoiler

Ferrea 5000 Series Hi Performance Exhaust Valve - SB Chevy - 1.600", 11/32" Stem Diameter, 4.910" Overall Length - (Set of 8) 4031 1/8" NPT female right angleThe 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