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440 Mopar - The 505ci Wedge

We Give A Mopar 440 A Swift Kick In The Crank To Build 634 Lb-Ft Of Torque And 583 Hp On Pump Gas With A ...

Photography by Bob Mehlhoff
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.

  • 440 Mopar Edelbrock Performer Rpm Heads
    The Edelbrock Performer RPM heads come with 2.14/1.81-inch valves and either 84cc or 88cc chambers. We chose 84cc.
    440 Mopar Edelbrock Performer Rpm Heads
    The Edelbrock Performer RPM heads come with 2.14/1.81-inch valves and either 84cc or 88cc
  • 440 Mopar Initial Build
    We initially built and tested the 505 with an Edelbrock Performer RPM dual-plane intake, which made gobs o' torque.
    440 Mopar Initial Build
    We initially built and tested the 505 with an Edelbrock Performer RPM dual-plane intake, w
  • 440 Mopar Headers
    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.
    440 Mopar Headers
    This 505 is intended for a '63 Plymouth, so we also included the price of a set of Tube Te
  • 440 Mopar Edelbrock Victor Swap
    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.
    440 Mopar Edelbrock Victor Swap
    After the first of tests where the dual-plane made so much torque it overpowered the dyno,
  • 440 Mopar Demon 850 Cfm Carburetor
    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.
    440 Mopar Demon 850 Cfm Carburetor
    To top off the motor, we bolted on a Mighty Demon 850-cfm carburetor to ensure we had suff
By Bob Mehlhoff
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