Chevy 505ci Big Block Cylinder Heads - Freedom Flow

Patriot Performance's New Freedom Series BBC Heads Deliver On The Dyno

John Nelson Jan 1, 2008 0 Comment(s)

505CI BIG-BLOCK DYNO DETAILS
Headers 2 1/8 Hooker Super
Comp upswept
Fuel 91-octane
Carburetor Mighty Demon 850
Jets 85/93
Advance 38 degrees

RPM LB-FT HP
3,500 606 404
3,600 605 415
3,700 600 423
3,800 594 430
3,900 590 438
4,000 590 449
4,100 593 463
4,200 594 475
4,300 590 483
4,400 595 499
4,500 603 517
4,600 609 533
4,700 612 547
4,800 614 561
4,900 620 578
5,000 623 593
5,100 624 606
5,200 620 614
5,300 616 621
5,400 613 631
5,500 607 636
5,600 601 641
5,700 596 646
5,800 594 656
5,900 590 663
6,000 588 671
6,100 579 673
6,200 569 672
6,300 562 674
6,400 553 674
6,500 541 669
AVG 596 566

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