Bare or Assembled – Frankenstein Engine Dynamics OEM and Aftermarket Cylinder Head Performance Porting
- Reuse Stock Stainless Steel Valves (37mm/31mm)
- Reuse Stock Springs (Upgrades Available – Call Us!)
- Reuse Stock Retainers (Want Titanium? – Call Us!) and Locks
- New Seals
- Service Sold Per Set
Description
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
Lead Times:
- LEAD TIMES MAY VARY. You can drop off your heads or ship them to us.
Specifications
Description |
Specification |
Part Number |
Min. Bore Dia. |
3.630? |
|
Intake Port Volume |
227cc |
|
Exhaust Port Volume |
115cc |
|
Combustion Chamber Volume |
60cc |
|
Intake Valves |
Reuse factory 37.7mm |
|
Exhaust Valves |
Reuse factory 32mm |
|
Valve Springs |
Reuse factory (upgrades available) |
|
Retainers |
||
Valve Locks |
Coyote OEM |
SPRF5RZ6518FRD |
Valve Seals |
Coyote OEM 5.0L Replacement |
SPRVSF50VUSS |
Rocker Stands |
Stock Rockers. (Trunnion Upgrade Kit Recommended, sold separately) |