Level 4 engine dyno testing results
Roller Lifter Cam 494 - Final
| RPM | Torque | HP | BSFC | Fuel lbs/hr | Air SCFM | A/F Ratio | Water Temp |
| 4500 | 654.3 | 560.6 | .420 | 221.4 | 630.8 | 13.04 | 160 |
| 4600 | 660.5 | 578.5 | .421 | 229.2 | 647.8 | 12.94 | 161 |
| 4700 | 661.7 | 592.1 | .417 | 232.2 | 662.9 | 13.07 | 162 |
| 4800 | 669.1 | 611.5 | .405 | 232.8 | 685.2 | 13.47 | 162 |
| 4900 | 664.5 | 620.0 | .410 | 239.3 | 698.5 | 13.36 | 162 |
| 5000 | 665.7 | 632.8 | .417 | 248.2 | 711.7 | 13.13 | 162 |
| 5100 | 660.2 | 641.0 | .418 | 252.0 | 724.2 | 13.16 | 162 |
| 5200 | 670.5 | 663.9 | .408 | 255.0 | 739.0 | 13.27 | 162 |
| 5300 | 664.1 | 670.1 | .416 | 261.9 | 751.5 | 13.14 | 162 |
| 5400 | 661.4 | 679.7 | .421 | 269.0 | 763.6 | 13.00 | 162 |
| 5500 | 659.7 | 690.9 | .412 | 267.6 | 782.7 | 13.39 | 162 |
| 5600 | 658.3 | 701.9 | .428 | 282.4 | 799.1 | 12.95 | 162 |
| 5700 | 653.9 | 709.6 | .430 | 286.5 | 818.6 | 13.08 | 162 |
| 5800 | 654.0 | 722.3 | .433 | 293.3 | 838.1 | 13.08 | 162 |
| 5900 | 652.4 | 732.7 | .424 | 291.8 | 856.3 | 13.44 | 162 |
| 6000 | 646.8 | 738.9 | .431 | 298.8 | 873.7 | 13.39 | 162 |
| 6100 | 638.3 | 741.3 | .439 | 305.4 | 886.1 | 13.28 | 162 |
| 6200 | 631.3 | 745.3 | .449 | 313.6 | 902.2 | 13.17 | 162 |
| Averages
4500-6200 |
657.0 | 668.5 | .422 | 265.6 | 765.1 | 13.19 | 162 |
As Tested:
Level 4 Race motor, as listed on Spec page
494ci, 12.5-1 compression
TA Roller cam- 260/266 duration at .050 684/700 lift 110 LC. Installed at 108LC
Biggest difference here... worked with our vacuum pump system, to increase vacuum to 12"HG, from the 7" it was pulling in the first roller cam 494 dyno test listed here
After this, it was decided to make the next step for power... more cubes, compression, and cam.
525 ci shortblock, on the stand now (as of 5/28/03)
Dyno test this June.
Stay tuned !