Dynojet Power Commander - Horsepower In The Mustang World
347 On Engine DynoAfter assembly, this engine was immediately tested on a Super Flow 901 engine dyno, where it was broken in for a couple of hours before we leaned on it. While it would have likely made more power with a bigger Crower cam, it still ran well once in the car and was already making more than 300 lb-ft of torque at only 2,500 rpm in the numbers shown below.
| rpm | hp | torque |
| 2,500 | 150.0 | 315.1 |
| 2,700 | 164.6 | 320.2 |
| 2,900 | 188.5 | 341.3 |
| 3,100 | 209.8 | 355.4 |
| 3,300 | 228.1 | 363.1 |
| 3,500 | 252.6 | 379.0 |
| 3,700 | 272.8 | 389.1 |
| 3,900 | 283.1 | 381.3 |
| 4,100 | 297.4 | 380.9 |
| 4,300 | 312.9 | 382.2 |
| 4,500 | 326.4 | 381.0 |
| 4,700 | 328.0 | 366.5 |
| 4,900 | 331.3 | 355.1 |
| 5,100 | 333.2 | 343.1 |
| 5,300 | 340.4 | 337.3 |
| 5,500 | 332.7 | 317.7 |
347 On Chassis DynoAfter about 15,000 miles of driving, the '90 LX with this same engine installed was run on a Dynojet. The results indicate about an 18 percent parasitic loss due to the car's drivetrain. This is the true difference between power at the flywheel and power to the ground.
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