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Financing starting at $28/mo or 0% APR with Affirm Learn more
Financing starting at $28/mo or 0% APR with Affirm Learn more

KDD CNC Ported 7.3 Powerstroke Cylinder Heads

Original price $4,500.00 - Original price $6,010.00
Original price
$4,500.00 - $6,010.00
Current price $4,500.00
  • Refundable Core Charge: "Cores" are used parts that can be used in re-manufacture. The Refundable Core Charge is added to your order and when you send your “core” in, we assess the value and will refund up to the Refundable Core Charge amount. +
  • Regular Price Plus Core: $4,500.00 USD
Style: Non fire-ringed
Valve Springs & Retainers: Stock plus
Valves: Stock Plus
Original price $4,500.00 - Original price $6,010.00
Original price
$4,500.00 - $6,010.00
Current price $4,500.00


Kill Devil Diesel is proud to present our CNC ported 7.3 Ford Powerstroke cylinder heads, machined on state of the art CNC equipment to deliver top shelf performance.  Dyno and track proven performance gains, and tough enough to handle the rigors of heavy duty towing and daily driving - these heads are sure to breath new life into your 7.3 Powerstroke!

KDD performs all machine work in house on state of the art equipment.  These heads receive all new hardened valve seat inserts, and iron matrix valve guides, as well as all new USA made valves and springs.  We also install Stainless Steel injector cups, standard - to prevent the common factory style brass cup failures.  After being carefully qualified to ensure only the best quality castings are used (magnetic particle inspection for cracks, pressure tested for leaks, treated in our rust removal process, all threads and gasket surfaces are inspected) KDD 7.3 heads are then treated to a 5 axis porting process, plus a competition-grade, high flow valve seat profile.  Heads come standard with new valves and springs, with optional 21-4N stainless nitrided valves available for added durability in the most demanding applications.  

Features and Benefits:

- Massive 40% increase in airflow!!

- Lower EGT's and Quicker Turbo Spool-Up

- Improved Throttle Response, less smoke!

- Proven gains of 75+hp (depending on turbo/injector setup, and calibration)

-100% Made in the USA from start to finish

- CNC Ported on state of the art 5 axis equipment

- Heavy Duty copper nickel valve seat inserts and iron matrix valve guides 

- Optional 21-4N Stainless Nitrided Valves with multiple spring options

KDD's port design philosophy was established during development of our game-changing ICON series 6.0 and 6.4 powerstroke heads, we've now taken that same technology and retrofitted into the 7.3 heads -  producing industry leading flow, while maximizing in-cylinder mixture motion - by not destroying cylinder swirl.  KDD's port technology was developed through state of the art CFD testing, as well as our SuperFlow SF1020 flow bench, in house DynoJet 223XLC chassis dyno, and countless hours at the drag strip, sled pulling track, through our cumulative decades in the performance industry.  


Please specify if you have an 8 or 10 bolt plenum in the notes when ordering. 

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Limited warranty included