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Test SixFinally, we added an S&B 4x15-inch air filter, fired up the dyno, and recorded 523 hp. A number of variables can account for the increase, but the point to drive home is that the filter certainly didn't hurt the performance. * 850 Mighty Demon* Edelbrock Victor Jr. single-plane* AFR 195 Street Eliminator cylinder heads * Comp Cams Xtreme Energy 284 cam w/1.6:1 roller rockers* Westech custom headers with 3-inch collectors* Air filter w/spacer* Jets: Primary: 78 changed to 75; Secondary: 80 changed to 78 | RPM | TORQUE | HP | | 3,000 | 394 | 225 | | 3,100 | 398 | 235 | | 3,200 | 405 | 247 | | 3,300 | 414 | 260 | | 3,400 | 422 | 273 | | 3,500 | 429 | 286 | | 3,600 | 434 | 298 | | 3,700 | 441 | 311 | | 3,800 | 449 | 325 | | 3,900 | 456 | 338 | | 4,000 | 459 | 350 | | 4,100 | 461 | 360 | | 4,200 | 462 | 370 | | 4,300 | 465 | 381 | | 4,400 | 467 | 392 | | 4,500 | 469 | 402 | | 4,600 | 471 | 412 | | 4,700 | 472 | 423 | | 4,800 | 473 | 433 | | 4,900 | 475 | 443 | | 5,000 | 477 | 454 | | 5,100 | 479 | 465 | | 5,200 | 480 | 475 | | 5,300 | 479 | 484 | | 5,400 | 476 | 490 | | 5,500 | 472 | 494 | | 5,600 | 467 | 498 | | 5,700 | 462 | 502 | | 5,800 | 459 | 507 | | 5,900 | 455 | 511 | | 6,000 | 452 | 516 | | 6,100 | 448 | 520 | | 6,200 | 443 | 523 | | 6,300 | 435 | 522 | | 6,400 | 425 | 518 | | AVERAGE | 446 | 391 |
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