Remember the first two columns represent uncorrected numbers. The next two are corrected. Uncorrected Torque is 485, while corrected Torque is 513. Uncorrected horsepower is 481 and corrected Horsepower is 511. Also, this is not a 400. It is a stroked 433. Has a crank with 4.0-inch stroke and .030 overbore. Lastly, the heads are ported.
Last edited by napster1; 06-17-2026 at 08:30 PM.
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