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More Horsepower for Less - 707 HP For $6,720
| RPM | TEST 1 | TEST 2 | | | | TQ | HP | TQ | HP | BSFC | | 3,000 | 514 | 294 | 518 | 296 | 0.463 | | 3,200 | 528 | 322 | 527 | 321 | 0.442 | | 3,400 | 544 | 352 | 549 | 355 | 0.422 | | 3,600 | 547 | 375 | 552 | 378 | 0.414 | | 3,800 | 545 | 395 | 550 | 398 | 0.412 | | 4,000 | 552 | 421 | 554 | 422 | 0.407 | | 4,200 | 564 | 451 | 562 | 450 | 0.395 | | 4,400 | 576 | 482 | 574 | 481 | 0.387 | | 4,600 | 586 | 513 | 585 | 512 | 0.389 | | 4,800 | 590 | 539 | 591 | 540 | 0.393 | | 5,000 | 593 | 565 | 596 | 567 | 0.403 | | 5,200 | 600 | 594 | 603 | 597 | 0.409 | | 5,400 | 603 | 621 | 603 | 620 | 0.419 | | 5,600 | 601 | 640 | 602 | 642 | 0.422 | | 5,800 | 598 | 660 | 601 | 664 | 0.415 | | 6,000 | 595 | 680 | 599 | 684 | 0.418 | | 6,200 | 588 | 695 | 593 | 700 | 0.432 | | 6,400 | 575 | 701 | 580 | 707 | 0.449 | | 6,600 | 557 | 700 | 561 | 705 | 0.446 | | Avg. | 572 | 527 | 575 | 529 | 0.417 | | Power/ci | 1.21 | 1.41 | 1.21 | 1.42 | | CAM SPECS | | CAM | DURATION
(ADV.) | DURATION
(AT 0.050) | LIFT | LOBE SEP. | | Comp Xtreme 292, (Intake) | 292 | 254 | 0.660 | 110 | | Mech. roller, (Exhaust) | 298 | 260 | 0.666 | |  The AFR heads we chose are...  The AFR heads we chose are the smallest rectangle-port heads AFR sells at 305 cc, which we chose to increase the inlet velocity through the ports. The heads come with 2.25/1.88-inch valves and 118cc combustion chambers. What was especially attractive was that the 305's exhaust-flow numbers compared well with most other Rat heads we investigated. |  Rather than be conservative,...  Rather than be conservative, we decided to step up to a more aggressive Comp Cams mechanical roller cam to make some decent street power. This also required AFR roller valvesprings to control those massive 2.250-inch intake valves. |  To ensure we had a solid induction...  To ensure we had a solid induction system that could feed the fat Rat, we opted for an Edelbrock Victor Jr. single-plane intake and a Barry Grant 850-cfm Mighty Demon carb. Everything we've read claims that even a mild street motor like this could benefit from a larger-cfm carburetor, but our budget demanded a smaller carburetor. |
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Dodge Charger Research
Explore the world with a new Dodge Charger. Fuel efficiency is important and the 2010 Charger with a 18.0 gallon main unleaded fuel tank 15.0 capacity gets 16 mpg, and is available in the following bodystyle: Sedans. Other similar vehicles are the Dodge Challenger and the Potiac Soltice.
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