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Edelbrock Heads - 467 Hp With A 425ci Olds

Who Needs A Long Stroke When You Can Have 540 lb-ft Of Torque And Make

Photography by Terry McGean
425 OLDS
  BEST Q-JET BEST DEMON
RPM LB-FT HP LB-FT HP
3,300 525 330 - -
3,400 523 339  
3,500 517 344 540 360
3,600 516 354 538 369
3,700 514 362 538 379
3,800 511 370 538 390
3,900 509 378 534 397
4,000 508 387 531 405
4,100 506 395 527 412
4,200 503 403 525 420
4,300 500 410 521 427
4,400 497 417 515 432
4,500 494 424 510 437
4,600 487 427 505 443
4,700 482 432 499 447
4,800 477 436 495 453
4,900 472 441 491 459
5,000 466 444 489 466
5,100 454 442 480 467
5,200 446 442 471 467
5,300 434 438 462 467
5,400 424 436 450 463
5,500 415 435 442 463
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