347 Stroker Dyno Test
The main girdle and windage tray on our Cobra's 347
The following dyno test was performed on a Dynojet Chassis dyno. This is the 347 stroker in our own Cobra Replica. This is a 347 race short block with extensively ported Edelbrock heads, X303 cam, Victor Jr EFI intake, 75mm TB, 30lb injectors and custom built 1 5/8" to 1 3/4" stepped long tube headers.
The high port exhaust work on our 347 Edelbrock heads
Dyno Test Results - Rear Wheel Horsepower
| RPM | Torque | Horsepower |
| 3500 | 351.0 | 233.9 |
| 3600 | 356.6 | 244.4 |
| 3700 | 361.7 | 254.8 |
| 3800 | 368.1 | 266.4 |
| 3900 | 371.7 | 276.0 |
| 4000 | 372.0 | 283.3 |
| 4100 | 373.5 | 291.6 |
| 4200 | 375.5 | 300.3 |
| 4300 | 375.8 | 307.7 |
| 4400 | 378.5 | 317.1 |
| 4500 | 379.4 | 325.1 |
| 4600 | 379.1 | 332.0 |
| 4700 | 379.4 | 339.5 |
| 4800 | 382.0 | 349.2 |
| 4900 | 383.3 | 357.6 |
| 5000 | 384.9 | 366.4 |
| 5100 | 385.0 | 373.8 |
| 5200 | 383.9 | 380.1 |
| 5300 | 382.7 | 386.1 |
| 5400 | 380.2 | 391.0 |
| 5500 | 372.6 | 390.2 |
| 5600 | 365.6 | 389.8 |
| 5700 | 361.2 | 392.0 |
| 5800 | 354.3 | 391.3 |
| 5900 | 351.8 | 395.2 |
| 6000 | 347.8 | 397.4 |
| 6100 | 344.2 | 399.7 |
| 6200 | 338.7 | 399.8 |
| 6300 | 334.2 | 400.9 |
| 6400 | 323.4 | 394.1 |
| 6500 | 306.8 | 379.8 |
The following data was obtained on a Superflow 901 engine dyno. Tested was one of our 347 strokers built for a customer's Cobra replica. Our SDS injection system helped this basic engine combination make outstanding power with excellent drivability.
WMS Total 347 Race Short Block, 10:1 Compression, TFS TW head, no porting, Comp 274HR Hydraulic Roller Cam, TFS Valvetrain, WMS Victor Jr EFI Manifold, 75mm TB, 30lb injectors, 1 5/8" Long tube Headers.
The WMS Victor Jr EFI Manifold with Fuel Rails and Throttle Body installed.
Dyno Test Results - Flywheel Horsepower
| RPM | Torque | Horsepower |
| 3300 | 376.3 | 236.4 |
| 3400 | 378.1 | 244.8 |
| 3500 | 395.8 | 263.8 |
| 3600 | 404.7 | 277.4 |
| 3700 | 412.7 | 290.7 |
| 3800 | 413.6 | 299.3 |
| 3900 | 419.5 | 311.5 |
| 4000 | 413.4 | 314.9 |
| 4100 | 416.1 | 324.8 |
| 4200 | 415.4 | 332.2 |
| 4300 | 416.9 | 341.3 |
| 4400 | 417.3 | 349.6 |
| 4500 | 415.5 | 356.3 |
| 4600 | 412.6 | 361.4 |
| 4700 | 421.5 | 377.2 |
| 4800 | 417.7 | 379.9 |
| 4900 | 414.3 | 386.4 |
| 5000 | 419.2 | 399.2 |
| 5100 | 414.2 | 402.2 |
| 5200 | 413.3 | 409.2 |
| 5300 | 408.7 | 412.4 |
| 5400 | 408.3 | 419.8 |
| 5500 | 400.2 | 419.1 |
| 5600 | 398.8 | 425.2 |
| 5700 | 390.9 | 424.2 |
| 5800 | 383.9 | 424.2 |
| 5900 | 384.4 | 431.8 |
| 6000 | 369.7 | 432.4 |
| 6100 | 371.6 | 431.6 |
| 6200 | 362.3 | 428.1 |