This 400 chassis journal bearing turbo is a high-performance powerhouse, capable of supporting over 1,640 horsepower (HP) on a DOHC small cube V8 engine. Designed for the serious class racer, this turbo is engineered to deliver exceptional response and the high horsepower needed to compete. This guy punches like an 88mm.

The TNT476 76mm Limited Street turbo incorporates our latest and most advanced compressor wheel technology, maximizing airflow and performance. Additionally, it features our proprietary 9-blade turbine wheel measuring 96x88mm. These turbine wheels are the result of extensive research and development, ensuring superior exhaust flow and reduced backpressure. Through years of research and development we designed them specifically to alleviate some of the restrictions and limitations found in standard BW 96x88 turbine wheels, allowing for greater power potential and improved efficiency without sacrificing recovery time or the ability to drive larger exducer equipped compressor wheels.

With precision-engineered components and cutting-edge design, this turbo is built to withstand the demands of high-horsepower applications. Whether you're pushing the limits at the track or looking for a competitive edge, this custom-built turbocharger delivers the performance you need.

Each TNT476 turbo is built to order, ensuring the highest quality and attention to detail for your specific performance needs.

Key Specs

• 76mm compressor wheel, 113mm exducer, journal bearing
• Proprietary 9-blade 96x88 turbine wheel
• Limited street edition — 235 units
• Rated 1640+hp on a DOHC small cube V8
• Built to order

Replaces / Cross-Reference

This is a class-legal 76mm compressor on the S400 frame, so it mounts exactly where a 76mm S400-frame turbo does. Where it differs is the 113mm exducer and 9-blade turbine, which is why it punches well above a standard 76mm.

• Turbine inlet: T6 — fits your existing T6 manifold
• Turbine discharge: 5.75" (146mm) marmon — same flange and 99502-0588 clamp
• Compressor discharge: V-band, sized to your charge pipe
• Oil drain: 50.8mm (2.00") bolt centre, 12AN port — same drain

If your class does not cap compressor inducer size, the standard TNT488 is the more straightforward route to the same power. Full model mapping: S400 replacement cross-reference.

Frequently Asked Questions

What is the TNT476 Limited Street rated for?

Over 1,640 horsepower on a DOHC small cube V8, built for serious class racing.

Why choose this over a standard 88mm?

Classes such as Limited 235 cap compressor inducer size. This turbo stays within a 76mm inducer while using a 113mm exducer and a proprietary 9-blade turbine to deliver airflow comparable to an 88mm. If your class has no such cap, a standard 88mm is the simpler choice.

Does it fit like a normal S400-frame turbo?

Yes. It uses the 400 frame with a T6 flange, 5.75" marmon discharge and a 50.8mm bolt centre 12AN oil drain — the same mounting hardware as any S400-frame T6 unit.

What makes this a "Limited" edition?

This is a limited run of 235 units featuring a proprietary 9-blade 96x88 turbine wheel.

Power ratings on this page are quoted in crank horsepower (HP). Figures previously published in wheel horsepower (WHP) have been restated using our in-house tested conversion — the hardware and its capability are unchanged.

BorgWarner and S400 are trademarks of BorgWarner Inc. Black Sheep Industries Inc. and True North Turbos are not affiliated with or endorsed by BorgWarner Inc. Model designations are used for identification and fitment reference only.