Description

WPD 10R140 Kong Series: 1000+ HP Transmission Rebuild for the High-Power 7.3L Godzilla

The ultimate 10R140 build for the high-power 7.3L Godzilla. Built for the strip, capable of everything else. You’ve gone beyond bolt-ons. A built engine, a big turbo, nitrous, or a combination that puts you north of 1000 HP, and the factory Ford 10R140 10-speed isn’t in the conversation anymore. The WPD Kong Series is a 1000+ HP 10R140 transmission built for the high-performance Ford Super Duty owner who demands a transmission that can survive the strip, handle a trans brake launch, and still make it home. It tows. It hauls. But make no mistake, this build was engineered for performance first. This isn’t a refresh. It’s a purpose-built, fully engineered rebuild designed to hold 1000+ HP under the most extreme conditions you can put it through. Kong always wins.

Every upgrade in this build came directly from our own in-house testing and failure analysis: real units pushed past their breaking point under extreme conditions, torn down, studied, and rebuilt with the right solution. That’s not a one-time process. We keep pushing the standard higher, refining every spec and validating every component until it performs the way it needs to. The Kong Series is the result of that relentless commitment.

10R140 Performance and Power Capability: 1000+ HP

• Rated for 1000+ HP, built for high-power builds running forced induction, nitrous, or heavily modified engines pushing well beyond stock output
• Raybestos GPZ friction material with precision ground steels to match, engineered to grab and hold under the extreme torque loads that destroy OEM and lesser aftermarket builds
• WPD custom valve body with hydraulic calibration developed specifically for 1000+ HP applications. It controls line pressure, shift timing, and engagement character at power levels the factory never anticipated, and it’s paired with a billet multi-disc converter built to match your stall speed
• Smooth, controlled shifts under full power, with no flares, no slip, and no bind-ups, even under sustained high-load conditions
• Performance-first build, engineered for the strip, the sled pull, and high-output street driving, with the capability to tow when needed
• Trans brake capable, built to handle the full-load engagement demands of trans brake launches on the drag strip
• Every component selected, tested, and validated through our in-house failure analysis program, including an aftermarket deep pan for added case rigidity and increased fluid capacity to keep temps in check under sustained high-performance use

What’s Inside the WPD 10R140 Kong Series Build

• Friction Kit
• Steel Set
• WPD Custom Valve Body
• WPD New Main Pump
• OEM Ford Bonded Pistons
• Updated CDF Drum
• Ford OEM Seal Kit
• Billet Multi-Disc Torque Converter
• New OEM Transmission Cooler
• Aftermarket Deep Pan

Available Add-On: WPD DIY External Transmission Cooler Kit

Running 1000+ HP means heat is the enemy. Our DIY external cooler kit includes an external transmission cooler and inline filter, dropping fluid temps below coolant temperature and filtering out contaminants before they reach your build. It’s purpose-made for high-performance applications where keeping temps in check is non-negotiable.

• External transmission cooler keeps fluid temps below coolant temp for significantly longer transmission life under sustained high-performance use
• Inline external filter catches contaminants before they circulate through the transmission
• Simple DIY installation, no special tools required
• Available as an add-on at time of order. Ask our team for details

Ideal Applications for the Kong Series

• High-power 7.3L Godzilla F-250, F-350, F-450, and F-550 (2020–2026) running forced induction, nitrous, or heavily built engines at 1000+ HP and demanding maximum transmission performance
• Drag strip and competition truck owners who run a trans brake, make multiple passes, and need a transmission that performs every single time
• High-performance street trucks that see occasional towing duty. This build handles it, but it was built for the moments that demand everything
• Sled pull and drag race competitors who need maximum holding power under sustained high-load, high-RPM abuse
• Owners who have already destroyed transmissions at high power levels and need a build that won’t repeat the failure

Built Without Compromise: A Performance-First 10R140

When you’re making 1000+ HP, there is no margin for error. The OEM friction material glazes. The factory valve body loses control. The stock internals can’t hold the torque. We know exactly where it fails, because we’ve torn down units that failed there, studied every failure mode, and engineered each fix from the ground up. The Kong Series was built to win on the strip first and handle everything else second.

This is the build for the high-performance Super Duty owner who stages at the line, runs a trans brake, and isn’t willing to compromise on what’s behind the engine. It’ll tow when you need it to, but it was engineered for the moments that push everything to the limit. It’s calibrated for the pressures your high-power engine demands and built to survive conditions that destroy everything else. Kong always wins.

This build is right for you if:

• You’re running 1000+ HP from forced induction, nitrous, or a fully built engine
• You compete, pull, drag race, or run a trans brake, and need a transmission that performs when it counts and survives when others don’t
• You need a transmission built for performance first that can still handle street and occasional tow duty without compromise
• You’ve been through transmissions before at high power levels and won’t settle for another failure
• You want the highest-spec 10R140 build available, tuned, tested, and proven by WP Developments

Important Notice: TCM Calibration and Tuning

This build is fully compatible with factory TCM calibrations. It will install and operate correctly on a stock tune right out of the box. However, to unlock the full benefits of this build, including optimal shift quality, line pressure response, and proper shift character at 1000+ HP, TCM parameter adjustments are strongly recommended. A calibrated tune allows the control module to properly command the upgraded valve body and internal components the way they were built to perform. At this power level, getting the tune right is the difference between good and exceptional.

2-Year Unlimited Mileage Warranty

Every WPD Kong Series build is backed by a 2-year, unlimited mileage warranty. No mileage caps, no fine print. If there’s a problem with the build, we make it right, because we stand behind every transmission that leaves our shop.

Frequently Asked Questions

How much horsepower can the WPD 10R140 Kong Series handle?

The Kong Series is rated for 1000+ HP, built for engines running forced induction, nitrous, or heavily modified combinations well beyond stock output.

Can the Kong Series handle a trans brake launch?

Yes. It’s trans brake capable, built to handle the full-load engagement demands of trans brake launches on the drag strip.

What trucks does the Kong Series fit?

It’s designed for high-power 7.3L Godzilla F-250, F-350, F-450, and F-550 Super Duty trucks, model years 2020 through 2026.

Can I still tow with a Kong Series transmission?

Yes. It was engineered for performance first, but it tows and hauls when you need it to.

Does the Kong Series come with a billet torque converter?

Yes. It includes a billet multi-disc torque converter built for 1000+ HP, with custom stall speeds available to match your specific combination and power curve.

Do I need a tune to run this transmission?

No. The build is fully compatible with factory TCM calibrations and will operate correctly on a stock tune. At 1000+ HP, though, TCM parameter adjustments are strongly recommended to get the best shift quality, line pressure response, and shift character.

What warranty comes with the Kong Series?

Every build is backed by a 2-year, unlimited mileage warranty.

Ready to Upgrade Your Ford Super Duty?

Contact WP Developments today to get a quote, check lead times, or talk to our team about fitment, installation, trans brake setup, custom stall speed, or TCM calibration requirements for your specific build. Every 10R140 Kong Series rebuild ships fully assembled and ready to install, backed by our 2-year unlimited mileage warranty.

WP Developments: Always Raising the Standard. Built Right. Built to Last.