6.4 Powerstroke Workhorse Plus Cylinder Head New

Part Number / SKU: CEP64WPHN

Key Features and Fixes:

The “Workhorse Plus” model is specifically designed for the most extreme demands, including heavy towing, drag racing, and sled pulling. The cylinder head features premium, high-strength components to handle maximum cylinder pressures and high-performance tuning.

Upgrades Over the Workhorse:

• HD Valve Springs

This head features key performance and durability upgrades, backed by an intense inspection protocol to guarantee every specification is met.

• Pressure Testing: After machining, every cylinder head is pressure tested at 40 PSI to confirm zero leaks and ensure casting integrity.
• Blow-Proof Plugs: Threaded, blow-proof plugs are installed in the top of the head for increased security and leak prevention.
• Final Quality Control: The head undergoes a final, extensive cleaning and quality control inspection. A detailed sign-off sheet is generated, measuring and recording critical specifications using a profilometer, including:

• • • Valve Recessions
    • Stem Heights
    • Installed Spring Heights
    • Spring Pressures
    • Keeper and Lock Positions
    • RA Recording

This rigorous process ensures you receive a head that is significantly improved over the original and ready for years of demanding diesel operation.

Components and Parts:

• New Casting: Built from a brand-new, non-remanufactured casting.
• New Valves: Equipped with new, high-quality intake and exhaust valves that are inspected for proper seating and clearance.
• HD Valve Springs: Installed with upgraded, heavy-duty valve springs and retainers to prevent valve float at high RPMs and high boost pressures, ensuring valve train stability and maximum performance under demanding conditions.
• New Injector Cups: Pre-installed new injector cups for proper fuel sealing.
• O-Rings: For enhanced durability, o-rings are cut and installed into the deck surface to dramatically improve sealing under high cylinder pressures.

Machining Process:

Aero Engines Inc has incorporated critical modifications and features to address common failure points of the factory 6.4L Powerstroke cylinder heads, drastically improving reliability.

• Optimal Sealing Surface: The deck is resurfaced to meet or exceed OEM specifications for Roughness Average (Ra), maximizing the sealing surface performance for the head gasket.
• Valve Train Geometry Alteration: We custom blueprint the head to alter valve height and valve recession, achieving maximum reliability.
• Lifter Longevity Fix: Valve stem heights are precisely altered to remove preload on the hydraulic lifter. This crucial modification decreases wear and significantly extends the life of the lifters.
• Optimized Flow: Valve seats are cut with a three-angle profile to optimize airflow and ensure proper sealing.
• Valve Prep: Valves are reground and their margins are meticulously inspected to guarantee proper sealing against the new seats.
• New Components: New casting, valve stem seals, valve seats, valve guides, and injector cups are installed.
• O-Rings: For enhanced durability, o-rings are cut and installed into the deck surface to dramatically improve sealing under high cylinder pressures.