FED M311 LS3/LSA Monster Cylinder Heads

Engineered and Machined by FED in the USA.

• Fully CNC ported, 72cc chamber volume
• 273cc intake port, 112cc exhaust port and 11° valve angle
• High Quality Components:
  • Black Nitride Stainless Steel Severe Duty Valves
  • Custom PAC .700” Lift Valve Springs
  • Titanium Retainers
• O-Ringed Exhaust Ports (Hi-Temp Silicone O-rings Included)
  
• 2″ Headers Recommended

Sold as a Pair