Fummins Compound Turbo Swap Kit | Twin Turbo Kit for Ford Cummins Conversion
Fits All Ford Cummins Swaps – From Stock to 1300 HP
Control EGTs, Increase Horsepower, and Improve Driveability
DPS Fummins Compound Turbo Kits are engineered for all Ford Cummins conversion builds—whether you're using a Ford 6.0 to Cummins conversion kit, a 6.4 Cummins swap, or another custom configuration. Designed to clear the heater and A/C core, our kits fit tight to the block and run exceptionally well.
Turbo Stage Selector:
Stage 2.5 Max 625hp S362/68/.70 over S475
Stage 3 Max 650hp S362/68/.70 over S480
Stage 4 Max 650hp S363/68/.70 over S475
Stage 4B Max 675hp S363/68/.70 over S480
Stage 4.5 Max 650hp S363/68/.70 Ball Bearing over S475
Stage 4.5B Max 675hp S363/68/.70 Ball Bearing over S480
Stage 5 Max 700hp S363/73/.80 over S475
Stage 5.5 Max 700hp S363/73/.80 Ball Bearing over S475
Stage 6 Max 750hp S363/73/.80 over S480
Stage 6.5 Max 750hp S363/73/.80 Ball Bearing over S480
Stage 8 Max 1100hp S366/73/.80 over S480
Stage 8.5 Max 1100hp S366/73/.80 Ball Bearing over S480
Note: For 6.7L Cummins engines, use Stage 6 or higher.
Features & Benefits:
- Race-comp housing flows 9% more air (S400)
- Clears heater core—tight fit for all Ford chassis
- Wastegated for adjustable boost control
- Includes 3-piece performance exhaust manifold with pre-tapped pyro ports
- Super high-flow air filter
- Kevlar/Nomex-lined silicone charge pipe (better flow and fitment than steel)
- High-pressure metal charge pipe & cast hot pipe
- Steel braided oil supply & stainless oil drain lines
- S400 atmospheric turbo + DPS S300 high-pressure turbo with 360° thrust bearing
- Reduces EGTs by 250–450°F vs. single turbo
- HP gain: 22% to 30% depending on setup
- CFD-tested for unmatched airflow and performance
Why DPS Compound Turbos Perform Better:
- Dual compressors deliver cooler air (over 100°F cooler than single turbo)
- Boost-to-drive pressure is nearly 1:1—more cylinder power on intake stroke
- Extra air molecules cool the chamber, like a jet engine bypass system
- More complete combustion = more usable torque and horsepower
Recommended Engine Prep:
- 1988–2002: Head studs over 48 PSI, fire rings over 55 PSI
- 2003–2007: Head studs over 55 PSI, fire rings over 65 PSI
- 2007.5–2018: Head studs over 48 PSI, fire rings over 55 PSI
All DPS compound systems can run 55+ PSI, adjustable based on build.
Exhaust Note:
A downpipe is not included. We provide a machined V-band adapter for welding a 4" or 5" pipe. A close-fit 2nd Gen Dodge downpipe is available for $175 (may need slight modification).
Fitment & Customization Notes:
Our Fummins kits are compatible with Ford 6.0L, 6.4L, and gas-to-Cummins conversions. While these kits are designed to clear tight Ford engine bays, every swap is unique. Installer must route intercooler, intake, and exhaust tubing based on the custom engine bay layout (alternator, batteries, intercooler type, etc.).
Disclaimer: Due to the custom nature of Ford/Cummins, Chevy/Cummins, and other conversions, some fabrication may be required for full integration with the truck’s intake, exhaust, and intercooler systems.
