SPOOLOGIC Stage 1 Performance Turbocharger

The SPOOLOGIC Stage 1 GT3788VA Turbocharger SL-100-027 is a performance upgrade for 2003 Ford F-250 F-350 F-450 F-550 trucks with the 6.0L Powerstroke. Its larger billet compressor wheel adds airflow capacity for modified street and towing builds, supporting approximately 425-450 rear-wheel horsepower with matched tuning, fueling, and supporting modifications.

⚠️ Custom tuning is highly recommended. See tuning recommendations below.

Features

• Brand new, no core charge
• Direct-fit installation using factory connections
• 7+7 billet aluminum compressor wheel
• 10-blade turbine wheel
• Upgraded journal bearings, 360° thrust bearing, and step-gap seal rings
• New VGT control solenoid, unison ring, and vanes
• Ceramic-coated turbine housing and center-section exterior
• Raw, red, or black compressor housing options
• High-speed VSR balanced

What's Included

• 1 SPOOLOGIC Turbocharger — SL-100-027
• 1 SPOOLOGIC VGT Control Solenoid — SL-270-006
• 1 SPOOLOGIC Oil Feed and Drain Line Set — SL-350-001
• 1 SPOOLOGIC Turbocharger Installation Kit — SL-310-131
• 1 SPOOLOGIC Up-Pipe-to-Turbo V-Band Clamp — SL-330-005
• 1 SPOOLOGIC Turbo-to-Downpipe V-Band Clamp — SL-330-009
• 1 SPOOLOGIC Turbo Heat Shield — SL-390-001

⚠️ Some early 2003 engines need an updated oil filter base for the supplied oil feed line. Base not included.

Fitment

• 2003 Ford F-250 F-350 F-450 F-550 6.0L Powerstroke
• 2003 Ford Excursion 6.0L Powerstroke

For milder alternatives using the 2003 mounting configuration, compare the Stock SL-100-020 and Stock Plus SL-100-023. Our 2003-2007 6.0L turbo buyer’s guide compares the three performance levels.

Tuning and Supporting Modifications

⚠️ Custom Tuning Highly Recommended: Custom tuning is highly recommended to match this Stage 1 turbocharger to the engine, intended use, and supporting components.

Supporting Modifications: Upgrade components as needed to support your intended power level.

• Larger injectors and fuel-system upgrades may be needed to reach the listed power range.
• Adequate high-pressure oil supply for the selected HEUI injectors.
• Intake and intercooler upgrades may be needed to reach the listed power range.
• Adequate exhaust flow and leak-free up-pipes.
• Boost and exhaust-gas-temperature monitoring during setup and loaded operation.

SPOOLOGIC does not provide custom tuning services. Customers are responsible for arranging application-appropriate tuning with a qualified tuning provider.

Power Support

Approximately 425–450 rear-wheel horsepower with a properly matched build. This is total power-support capacity, not a promised horsepower increase. Actual output depends on engine condition, fuel delivery, calibration, and the complete vehicle combination.

Compressor Wheel

• Blade design: 7+7
• Compressor inducer: 63.5 mm
• Compressor exducer: 88 mm
• Extended tip: 94 mm
• Material: 5-axis CNC-machined billet aluminum

Turbine Shaft

• Turbine inducer: 72.5 mm
• Turbine exducer: 66.4 mm
• Turbine blade count: 10
• Material: High-nickel Inconel

Upgraded Internals

• Upgraded journal bearings
• 360° thrust bearing
• Step-gap seal rings

High-Speed VSR Balancing

The rotating assembly is high-speed VSR balanced before shipment for smooth, consistent operation.

VGT Control System

The VGT control solenoid uses engine oil pressure to move the unison ring and turbine vanes. The control solenoid is supplied preinstalled.

• VGT Vane Pack: Nine 15 mm vanes

Coatings and Finish Options

The turbine housing and center-section exterior are ceramic coated to help manage radiant heat and resist oxidation. Heat reduction varies with operating conditions. The finish options below apply only to the compressor housing.

• Raw: Bare aluminum with no coating
• Red: Red powder-coated exterior
• Black: Black powder-coated exterior

OEM Cross-References

• Garrett Factory New: 725390-5006S
• Garrett Factory Remanufactured: 725390-9006S
• Garrett GT3788VA Performance Reference: 777469-5002S
• Ford: 3C3Z-6K682-CCRM / 3C3Z6K682CCRM
• Motorcraft: TC-13-RM / TC13RM

⚠️ Emissions Notice

Not CARB approved. Not legal for sale or use in the state of California.

1-Year Limited Warranty

Every SPOOLOGIC turbocharger carries a one-year limited warranty against defects in materials and workmanship from the original purchase date. Coverage applies to the original purchaser with dated proof of purchase. Contact SPOOLOGIC for return authorization before shipping the turbocharger for inspection. If inspection confirms a covered defect, SPOOLOGIC will repair or replace the turbocharger at its discretion. Coverage excludes damage caused by foreign-object debris, oil starvation, contaminated or restricted oil supply or drainage, extended oil-change intervals, overboosting, overspeed, overfueling, excessive exhaust temperatures, improper installation or startup, improper tuning or repairs, or operation outside the listed application or intended operating range. Normal cosmetic wear, coating discoloration, and heat-cycling marks are not covered. Customers pay shipping to SPOOLOGIC and return shipping, whether the claim is approved or denied. Labor, diagnostics, removal, reinstallation, towing, downtime, and other related expenses are not covered. See the SPOOLOGIC Warranty Policy for complete terms and claim procedures.