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Assembled – Frankenstein Engine Dynamics LS7 Cylinder Head Performance Porting

Assembled – Frankenstein Engine Dynamics LS7 Cylinder Head Performance Porting

Regular price $2,499.96 USD
Regular price Sale price $2,499.96 USD
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core charge is $1500- fully or partially refunded once cores are received and deemed good/usable/rebuildable GM stock ls7 cores WITH titanium intake valves  



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

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Core Charge- Refunded (or partially refunded) once cores are recieved, inspected and deemed usable by F.E.D.  on occaison, new valves are required.

Description Specification Part Number
Min. Bore Dia. 4.125″
Intake Port Volume 285cc
Exhaust Port Volume 90cc
Combustion Chamber Volume 63.5cc
Intake Valves Reuse Del-West Titanium Intake Valves 2.205″
Exhaust Valves FED Custom Stainless Exhaust Valve GM LS7 HR S1 – 1.614 x 5.220 OAL x .3135 stem x .290 tip 914025
Valve Springs .700 Dual Valve Spring by PAC 914005
Retainers FED Ti-64 Retainer – LS Dual Spring 914040
Valve Locks GM Valve Lock 916051
Valve Seals Viton High Heat Seal  VS805 .311/.500/8mm SPRVS805USS
Guides CHE Bronze GM LS7 Valve Guide – Intake and Exhaust – .500 x .314 x 2.260 VG500314226E7BCHE
Rocker Stands Stock Rockers. (Trunnion Upgrade Kit Recommended, sold separately)

Vehicle Fitment

  • 2006 Chevrolet Corvette Z06
  • 2007 Chevrolet Corvette Z06
  • 2008 Chevrolet Corvette Z06
  • 2009 Chevrolet Corvette Z06
  • 2010 Chevrolet Corvette Z06
  • 2011 Chevrolet Corvette Z06
  • 2012 Chevrolet Corvette Z06
  • 2013 Chevrolet Corvette Z06

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Guaranteed Quality

St. Paul Speed & Performance hand selects the brands we offer based on decades of experience in domestic automotive performance and modification. If you ever experience a problem with your order, our representatives are well equipped to help ensure your purchase brings satisfaction.

  • Best Available Price

    St. Paul Speed & Performance's distribution partners work to provide us with the best possible price for the products we sell. We pass that on to you, the customer. If you find a product you are interested in at a lower price elsewhere, please let us know and we will match that price if we can.

  • Returns

    We accept unopened items free of charge, excluding shipping fees.
    Unfortunately, during this time, we can not process opened items that
    would typically have a restocking fee.