Bring Your Powerstroke Back to Life with KDD's exclusive Steel Piston 6.4 Package

  You don’t have to live with the ticking time bomb of factory 6.4 Powerstroke pistons. The OEM cast-aluminum design is notorious for cracking under high heat and load—often without warning—leaving you with a dead engine and a massive repair bill. In 2020, Kill Devil Diesel pioneered the exclusive steel piston 6.4 engine package, eliminating this failure point for good.

Our proven solution uses factory Ford 2020 6.7L steel pistons—renowned for their strength—paired with custom USA-made forged steel connecting rods designed specifically for the 6.4 platform. The result is an engine built to thrive under extreme conditions, whether you’re towing, daily driving, or pushing serious performance numbers.

Every KDD steel piston engine is CNC-machined and hand-assembled with unmatched attention to detail, delivering the power, efficiency, and bulletproof reliability your truck was meant to have. No more cracked pistons. No more sleepless nights wondering if today is the day your engine gives up. With Kill Devil Diesel, your 6.4 doesn’t just run—it’s built to dominate.

Rediscover your truck’s true potential with the ultimate 6.4 upgrade.

S2+ Steel Piston Longblock - Sportsman Series
Features:

• KDD Aluminum ICON Series O-Ringed Cylinder Heads: With our HD/Performance 100lb valve springs, perfect for higher boost and back pressure with upgraded turbos and injectors.

• American Made P1 or ARP Head Studs to eliminate leaking head gaskets

• KDD's proprietary steel piston package, including our custom CP Carrillo Rods  

• USA made valvetrain - S2 Sportsman Series Camshaft: Engineered to maximize performance from 1000-4000rpm, quicker spool up and lower EGT's - plus KDD's Gen2 HD USA made lifters and chromoly pushrods. 

- Precision CNC Blueprint Machining: CNC Bored/Chamfered and Square Decked, CNC torque plate honed to ensure maximum durability and proper ring seal.

Performance Specs:
- Rated at 1000+ HP—ideal for daily driving, heavy towing, mild track use with supporting modifications (Stock to 60% over injectors, ideal for KC S2 drop in VGT or moderate to large single turbo)

S3+ Steel Piston Longblock – Outlaw Series - Built for Competition
Features:

- KDD CNC Ported Aluminum ICON Series O-Ringed Cylinder Heads: Featuring 100lb HD Performance valve springs and Nitro-Black stainless steel valves.

- P1 or ARP head studs to prevent head gasket failure + main studs to keep the bedplate/main caps secured under extreme conditions

- KDD's proprietary steel piston package, including our custom CP Carrillo Rods, forged in the USA.  

- S2 Billet Camshaft: Built for maximum power output while retaining drivability.   (Upgrade to S3 camshaft optional, will require additional 0.120" valve recession to the cylinder heads)

- KDD's exclusive Jesel Valvetrain System - Forged steel, shaft mounted adjustable roller rockers + Jesel's DLC coated solid roller lifters for the ultimate high performance valvetrain. Tough enough for the track, dependable enough for the street.  

- Precision CNC Blueprint Machining: CNC Bored/Chamfered and Square Decked, CNC torque plate honed to ensure maximum durability and proper ring seal.

Performance Specs:
- Rated to handle 1,500+HP/6000RPM, S3 camshaft and CNC ported heads make this package ideally suited for higher RPM, competition level, ready for nitrous, compound turbos, and repeat track passes. 
- Track Use Recommended: Not ideal for towing; recommended for 72mm or larger single turbos, compound turbos and nitrous.