The graph info waspulled fron the following the Moparts Link:
https://board.moparts.org/ubbthreads/show...e=1&fpart=1From: Dave Freiburger Date: 8/27/07
We have a winner: "I'll put the overall average TQ and Hp on the 6bbl, then the RPM, then the Torker."
Here's what our test showed. Each test is an average of two dyno pulls to remove anomolies. The numbers shown represent average power from 2,500 to 6,000 rpm. However, even averages do not tell the entire story. For example, the Torker and the RPM have the same average numbers, but they are not the same: the power curves cross at 3,900 rpm, with the Torker making more high-end and the RPM making more low end.
As for peak power, the Torker, Street Dominator, M1, and Victor were all at 455-456 hp at 5,900 rpm.
Nearly every manifold made 450-460 lb-ft at 3,800-4,100 rpm. Most of the dual-planes were way stronger than most of the single planes at rpm points below peak torque. Duh.
I think the tunnel ram would have done a lot better as a dual quad. I was surprised how well the Six Pack did, but I think that's because of this engine's low-rpm and low displacement. Six Packs have killed big power in other tests with other more radical engines.
That just proves that you really have to consider the test before you can make a judgment call, and you can't just look at one point of data and say "that's best" overall. It will also be interesting to see how this may change when we put better heads on the engine. If the 906 heads are currently the restriction, then other weak points in the intakes will be revealed with better heads.
More data in the December issue of HRM.
2500-6000 AVG 3000 4000 6000
INTAKE LB-FT HP LB-FT HP LB-FT HP LB-FT HP
Six Pack 428 348 413 236 459 350 391 447
Torker 427 348 395 225 455 356 397 454
Perf RPM 425 346 408 233 457 348 392 448
Victor 383 425 346
M1 single 424 345
1x4 tr 425 346
TM6 424 345
DP4B 424 344 419 239 454 346 387 442
Performer 422 341 418 238 452 344 382 436
Action Plus 421 341
Street Dom 421 344 381 217 449 342 395 452
Team G 409 334
Offy 360 406 338
Offy 2x4 408 330
Offy DP 404 327
Here are just a few data points. Also, a reminder that this thing had STOCK heads. I think the heads were the restriction, therefore the manifolds did not make drastic changes; except for the really bad ones, the different intakes just wiggled the numbers around by 5-10 hp or shifted them to the low rpm (dual plane) or high rpm (single plane). I'm pretty certain there will be more difference between the intakes once some better heads are on the engine. I find that out at the end of the month.
RPM LB-FT HP
Street Dominator
3,000: 381, 217
4,000: 449, 342
6,000: 395, 452
RPM LB-FT HP
Torker
3,000: 395, 225
4,000: 455, 356
6,000: 397, 454
Perf RPM
3,000: 408, 233
4,000: 457, 348
6,000: 392, 448
DP4B
3,000: 419, 239
4,000: 454, 346
6,000: 387, 442
Performer
3,000: 418, 238
4,000: 452, 344
6,000: 382, 436
Six Pack
3,000: 413, 236
4,000: 459, 350
6,000: 391, 447
