Stahl Cam Profiles
Intake Lobes
Duration
@ .050		 Designed
Base Circle		 Cam Lift Gross Valve Lift
1.50 1.55 1.60 1.65 1.70
231.7A 1.100 0.359 0.539 0.556 0.574 0.592 0.610
251A 1.000 0.420 0.630 0.651 0.672 0.693 0.714
255A 1.020 0.415 0.623 0.643 0.664 0.685 0.706
255B 1.000 0.421 0.632 0.653 0.674 0.695 0.716
257A 1.000 0.420 0.630 0.651 0.672 0.693 0.714
259BS 0.940 0.419 0.629 0.649 0.670 0.691 0.712
259C 0.980 0.421 0.632 0.653 0.674 0.695 0.716
261BF 0.980 0.4265 0.640 0.661 0.682 0.704 0.725
261CS 0.920 0.4265 0.640 0.661 0.682 0.704 0.725
263A 1.020 0.413 0.620 0.640 0.661 0.681 0.702
264BF 1.000 0.430 0.645 0.667 0.688 0.710 0.731
264BS 0.940 0.431 0.647 0.668 0.690 0.711 0.733
267A 1.000 0.435 0.653 0.674 0.696 0.718 0.740
268A 1.020 0.418 0.627 0.648 0.669 0.690 0.711
270A 1.060 0.437 0.656 0.677 0.699 0.721 0.743
277A 0.980 0.442 0.663 0.685 0.707 0.729 0.751

Exhaust Lobes
Duration
@ .050		 Designed
Base Circle		 Cam Lift Gross Valve Lift
1.50 1.55 1.60 1.65 1.70
237.5 1.150 0.354 0.531 0.549 0.566 0.584 0.602
257 1.000 0.403 0.605 0.625 0.645 0.665 0.685
261A 1.020 0.401 0.602 0.622 0.642 0.662 0.682
264DS 0.940 0.410 0.615 0.636 0.656 0.676 0.697
264E 0.980 0.417 0.626 0.646 0.667 0.688 0.709
264F 0.980 0.417 0.626 0.646 0.667 0.688 0.709
267BF 0.980 0.4195 0.629 0.650 0.671 0.692 0.713
267BS .0920 0.419 0.629 0.649 0.670 0.691 0.712
270A 1.000 0.422 0.633 0.654 0.675 0.696 0.717
270BS 0.940 0.422 0.633 0.654 0.675 0.696 0.717
274A 1.000 0.424 0.636 0.657 0.678 0.700 0.721
277A 1.000 0.4265 0.640 0.661 0.682 0.704 0.725
283A 1.000 0.429 0.644 0.665 0.686 0.708 0.729

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