Answer
Apr 13, 2026 - 07:41 AM
Industrial Injection rates this Stage 2 5.9L 12‑valve race long block for up to about 1,500 horsepower, so final torque depends entirely on the turbo, fueling, and tune you pair with it rather than a fixed spec.
For reference, a stock 5.9L 12‑valve Cummins from this era produced roughly 400–440 lb‑ft of torque at 1,600 rpm, so with supporting mods this engine can realistically deliver several times that figure, but Industrial Injection doesn’t publish a specific torque rating.
