Frankenstein’s Advanced Porting Service for your GM LT4 or LT5 Cores

Bare or Assembled Set

• FED INCONEL Exhaust Valves: 1.590″
• Aftermarket CHE Bronze Valve Guides
• Reuse Del-West Titanium Intake Valves 2.125″
• FED Custom .700″ Spring Kit with Titanium Retainers
• Service Sold Per Set

FED  specializes in high performance cylinder head porting for racing engine applications. OEM and Aftermarket heads enter FED’s advanced manufacturing processes proven to generate the most efficient power in every application. We take great pride in our work and our attention to detail is unmatched in this industry. With over 100 years of combined team experience we know how to Win! FED’s Porting Process Includes:

• Teardown/Clean/Inspect
• FED’s exclusive high performance porting programs via 5-Axis CNC – Intake/Exhaust/Chambers (Some Chambers Don’t Apply)
• Pressure Tested for Leak Detection
• Precision Newen CNC Valve Job, which ensures near zero runout
• All Cylinder Head Sealing Surfaces Including Ends are PCD Machined, Making Sure all Surfaces are True
• Meticulous Hand Blending and Deburr
• PCD Surfacing Optimal For Modern MLS Head Gaskets
• Final Wash and Assembly
• Extreme Attention to Detail and Quality Control at Every Stage