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Intake Manifold Benefits - Manifold Destiny

What's Better-A Dual-Plane Or A Single-Plane Manifold?

By Wayne Scraba, Photography by Wayne Scraba, HVH, Tom Posthuma
Test 5:
RPM Torque HP Volumetric Efficiency Brake Specific Fuel Consumption
4100 393.6 307.3 95.3 .50
4200 395.2 316.0 94.6 .48
4300 397.8 325.3 94.2 .49
4400 396.3 332.0 94.1 .49
4500 395.5 338.9 93.8 .48
4600 397.4 348.1 93.8 .47
4700 396.6 354.9 95.0 .48
4800 396.4 362.3 95.6 .47
4900 397.2 370.6 97.4 .47
5000 397.0 378.0 98.2 .47
5100 399.2 387.6 98.7 .46
5200 394.5 390.6 99.1 .48
5300 392.1 395.7 98.9 .49
5400 387.1 398.0 98.2 .50
5500 385.6 403.8 97.7 .49
5600 380.2 405.4 97.3 .49
5700 374.3 406.2 97.0 .50
5800 371.9 410.7 97.1 .50
5900 363.9 408.8 96.3 .50
6000 365.4 417.4 96.2 .49
6100 360.0 418.1 95.7 .50
6200 357.0 421.4 96.0 .51
Test 6:
RPM Torque HP Volumetric Efficiency Brake Specific Fuel Consumption
4100 395.4 308.7 95.5 .49
4200 397.2 317.6 95.0 .49
4300 399.7 327.2 94.8 .48
4400 397.3 332.8 94.0 .49
4500 401.5 344.0 94.1 .47
4600 401.8 351.9 94.0 .46
4700 401.6 359.4 94.9 .47
4800 400.6 366.1 95.2 .46
4900 401.9 375.0 96.4 .46
5000 401.7 382.4 97.2 .46
5100 401.0 389.4 98.3 .48
5200 399.5 395.5 98.6 .46
5300 396.3 399.9 99.1 .48
5400 392.0 403.0 98.6 .49
5500 388.1 406.4 98.2 .48
5600 383.3 408.7 97.9 .50
5700 380.6 413.1 97.6 .50
5800 376.4 415.7 99.7 .50
5900 368.1 413.5 96.9 .50
6000 369.7 422.4 96.5 .49
6100 366.4 425.6 96.9 .50
6200 360.2 425.2 96.1 .51
6300 354.3 425.0 95.8 .51
6400 346.3 422.0 95.2 .52
6500 341.6 422.8 94.6 .55
By Wayne Scraba
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