From Naturally Aspirated to 824 Horsepower

This Toyota Supra started life as a naturally aspirated right hand drive 2JZ GE car and was transformed by Sleeper Tuning into a serious single turbo performance build. At the center is the Garrett GBC37-900 T4, showing how much performance the GBC series can deliver.

With pricing around $1,050 for the turbocharger and approximately $1,290 with housing, the GBC series provides a cost-effective entry into Garrett performance without sacrificing real output capability.

This build places the GBC turbo in a high-quality, professionally assembled Supra, reinforcing that it is not simply an entry-level option, but a capable performance solution.

Sleeper Tuning Supra during dyno validation and tuning.

Built Around Proven Components

The setup includes a Garrett GBC37-900 T4 turbocharger, Artec manifold, dual Turbosmart 45 mm wastegates, and a built cylinder head with GSC valves, conical springs, titanium retainers, and Brian Crower 272 camshafts.

Supporting systems include PRP R35 coil conversion, GRP Engineering trigger kit, 82 mm Bosch drive by wire throttle body, Zero Fab intake manifold, PHR 4.5 inch intercooler, Injector Dynamics 1700 injectors, Fuel Lab regulator, PHR triple pump system, and Link ECU.

Power is delivered through a Grannas Racing T56 swap with the GR700 kit, completing a drivetrain built to handle the output.

Engine bay highlighting the turbo system and supporting hardware.

Why the GBC Series Matters

The Garrett GBC Series provides access to Garrett engineering, reliability, and performance at a highly accessible price point. This build demonstrates that a journal bearing turbo can still deliver serious output when properly applied.

Used in a professional build with premium supporting components, the GBC37-900 proves itself as a strong option for builders balancing performance and cost.

Real Dyno Proven Output

Final results came in at 824.6 horsepower and 635.2 lb-ft of torque, demonstrating the capability of the Garrett GBC37-900 in a properly matched system.

Watch the Full Build Video