Ferrea 5000 Series Hi Performance Exhaust Valve - SB Chevy - 1.600", 11/32" Stem Diameter, 4.935" Overall Length - (Set of 8) NItrous Oxide Pressure Gauge Manufactured from heavy-duty 35mm (front)

Manufactured from heavy-duty 35mm (front) and 25mm (rear)DOM steel tubing

Fits First-Gen GM F-body and GM X-body

User adjustable radial display scaling allows for fine tuning of tachometer operating range to match the specific characteristics of your engine

2 Pin Weatherpack

Ferrea 5000 Series Hi Performance Exhaust Valve - SB Chevy - 1.600", 11/32" Stem Diameter, 4.935" Overall Length - (Set of 8) NItrous Oxide Pressure Gauge Manufactured from heavy-duty 35mm (front)The 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