| | | Fixed | Dual | |
| Drive | Chain (1) | GD (2) | Idler (3) | Jesel (4) |
| Peak HP | 633.5 | 636.3 | 634.0 | 633.0 |
| Peak TQ | 595.4 | 596.3 | 596.3 | 594.2 |
| Average HP | 511.7 | 511.2 | 511.0 | 510.7 |
| Average TQ | 552.8 | 552.1 | 552.1 | 551.9 |
While we saw little to pick from in terms of outright power output between the drives, there is a major distinction in how easily the various systems can be adjusted for cam timing. Here, the hands-down winner is the Jesel belt system, since the drive is external, and adjustment can be made without taking anything apart. So, is adjusting the cam worthwhile? We ran through a range of settings, from 101 to 107-degree installed centerlines. We used the same test procedure as before, deriving the numbers by averaging three dyno pulls. The ignition advance was adjusted to 37 degrees total for each test, since moving the cam will change the ignition timing.
Centerline Dyno Results Tested at Westech Performance GroupSuperFlow 902 engine dynoAll tested with a Jesel beltdriveAverages calculated from 3,100-6,600 rpm
| Centerline | 101 | 103 | 105 | 107 |
| Peak HP | 633.5 | 633.0 | 644.6 | 645.3 |
| Peak TQ | 590.6 | 594.2 | 594.3 | 591.9 |
| Average HP | 510.1 | 510.7 | 512.7 | 511.9 |
| Average TQ | 551.1 | 551.9 | 553.3 | 552.4 |