The TNT476 76mm T6 takes the most popular compressor size in the 400 frame and moves it to a T6 turbine inlet — the configuration for sled pulling, sustained load, and race builds where the manifold is already T6 and inlet area matters. Rated for a street-able 1110-1230hp on a 6.0L or smaller pushrod V8.

The 96x88 turbine wheel behind it is our own design, the product of several years of research into the backpressure that comes with maxing out the standard BW 96x88. It brings the rotor assembly up to speed faster without running out of breath early — 115-235hp gains under 5000rpm and stronger peak numbers than competitors we have dyno tested back to back.

The TNT4R line is universal. While the HP figures above are quoted on pushrod V8 applications, the same 76mm frame is used across LS and small-block swaps, 2JZ and RB inline-six builds, Barra sixes, and diesel trucks running Cummins, Duramax or Power Stroke.

Key Specs

• 76mm compressor wheel, journal bearing
• 96x88 turbine wheel
• T6 flange, available in 1.15 / 1.30 V-band / 1.32 / 1.45 / 1.58 A/R
• Rated 1110-1230hp on sub-6.0L pushrod V8 applications
• Built to order

Replaces / Cross-Reference

The TNT476 is a direct bolt-on replacement for S475 and S476 turbochargers and other 76mm S400-frame units. Built on the same 400 frame, it uses the mounting hardware you already have:

• 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

Full model mapping: S400 replacement cross-reference. Housing selection: S400 turbine housing and A/R guide.

Frequently Asked Questions

Is the TNT476 a direct replacement for an S476?

Yes. The TNT476 is built on the 400 frame, so it is a direct bolt-on replacement for S475 and S476 turbochargers. Your T6 manifold, 5.75" marmon downpipe flange, clamp, compressor discharge and 12AN oil drain all carry over.

What is the TNT476 T6 96/88 rated for?

A street-able 1110-1230hp on a 6.0L or smaller pushrod V8, with 115-235hp gains under 5000rpm versus comparable competitor turbines. The same frame is used across gas, import and diesel builds.

What A/R options are available?

This turbine housing is available in 1.15, 1.30 V-band, 1.32, 1.45, and 1.58 A/R.

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.