| Test 1 | | Test 2 | | Diff | |
| RPM | TQ | HP | TQ | HP | TQ | HP |
| 3500 | 614 | 410 | 601 | 401 | -13 | 9 |
| 3700 | 626 | 441 | 606 | 427 | -20 | -14 |
| 3900 | 639 | 474 | 620 | 460 | -19 | -14 |
| 4100 | 640 | 500 | 634 | 495 | -6 | -5 |
| 4300 | 631 | 517 | 637 | 522 | +6 | +5 |
| 4500 | 623 | 534 | 629 | 539 | +6 | +5 |
| 4700 | 609 | 545 | 622 | 557 | +13 | +12 |
| 4900 | 594 | 554 | 607 | 567 | +13 | +13 |
| 5100 | 577 | 560 | 593 | 576 | +16 | +16 |
| 5300 | 557 | 562 | 572 | 577 | +15 | +15 |
| 5500 | 533 | 558 | 550 | 577 | +17 | +19 |
| 5700 | 514 | 558 | 537 | 583 | +23 | +25 |
| 5900 | 484 | 545 | 512 | 575 | +28 | +30 |
| Peak | 640 | 562 | 634 | 583 | |
| Avg. | 589 | 522 | 595 | 529 | |
Torque Forever
Test 1 consisted of the 505 engine combination fitted with an Edelbrock Performer RPM intake manifold and Mighty Demon 850-cfm carburetor.
Test 2 was exactly the same as Test 1 with the exception of the change to an Edelbrock single-plane Victor Jr. intake manifold.manifold.
The Edelbrock Performer RPM heads come with 2.14/1.81-inch valves and either 84cc or 88cc chambers. We chose 84cc. | 
We initially built and tested the 505 with an Edelbrock Performer RPM dual-plane intake, which made gobs o' torque. |
This 505 is intended for a '63 Plymouth, so we also included the price of a set of Tube Technologies Inc. (TTI) 2-inch primary tube headers that fit a '62-'65 Mopar B-Body. TTI is acknowledged as offering some of the best Chrysler headers on the market. | 
After the first of tests where the dual-plane made so much torque it overpowered the dyno, Westech's ace parts swappers Ernie Mana Sr. and Jr. swapped on the Edelbrock Victor and picked up a worthwhile 30 hp at 5,900 rpm. |
To top off the motor, we bolted on a Mighty Demon 850-cfm carburetor to ensure we had sufficient airflow so that the big Mopar wouldn't be starving for air. | |