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Dual Plane Intake Manifold Comparisons - The Great Intake Flog, Part II

Dueling Dual Planes

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Medium Manifolds (5.00 to 5.30 Inches Carb Pad Height)

Manifold PN Price Peak TQ Peak HP Avg. TQ Carb Ht. TQ at 3,000
AFR Titon 4804 $579.00 510 484 473.6 5.29 467
Edelbrock Air Gap 7501 $234.95 508 474 471.2 5.26 473
Edelbrock RPM 7101 $174.95 504 470 468.3 5.25 474
Weiand Warrior 8501 $217.95 504 466 466.3 5.24 471
Summit Stage 3 226010 $182.95 503 464 465.6 5.25 471
Edelbrock RPM Q-Jet 7104 $199.95 501 465 465.3 5.25 471
Summit Stage 2 226014 $132.95 502 469 464.9 5.18 466
Weiand Speed War 8150 $145.95 502 467 464.9 5.18 467
Jegs 513000 $ 99.99 500 471 464.5 5.29 462
Professional Products Crosswind 52026 $199.95 496 457 459.5 5.24 469

Tall Manifolds (5.30 Inches and Taller)

Manifold PN Price Peak TQ Peak HP Avg. TQ Carb Ht. TQ at 3,000
Professional Products Typhoon 52021 $162.95 499 469 465.3 5.33 471
TFS StreetBurner 30400222 $224.95 501 465 465.2 5.39 473
Dart SHP 42811000 $231.70 501 464 463.7 5.52 470
Professional Products Cyclone-Plus 52013 $177.95 497 458 461.0 5.37 471
Chevy Iron 14096011 $261.06 494 457 459.0 5.45 468

Peak Torque and Horsepower

We have to acknowledge how amazingly tight this field is in terms of peak torque. How close? It is fair to say that it would be difficult to feel the difference of 2 percent of power. That's 10 lb-ft of torque, the difference between the Third Place Edelbrock EPS manifold at 506 lb-ft and the Professional Products Crosswind (52026), which placed 20th. Also note that in the peak-torque category, three of the top five manifolds are Edelbrock castings. When it comes to dual-plane intakes, torque is king, and it appears the Edelbrock has this part of the power curve dialed in.

Torque at 3,000 rpm is another important category that we listed in the initial description chart for each manifold. We opted to include this bit of data because it relates to low-speed power. With a performance torque converter, this would be just after the converter hits. Note that the relatively short Edelbrock 2601 Performer Air Gap manifold makes more torque at 3,000 than any other manifold. Compare its 478 lb-ft to the Jegs manifold's 462 lb-ft, to see that the Air Gap makes 16 lb-ft more torque. We guarantee you will feel 16 lb-ft in the seat of your pants. We think this can be partially attributed to the plenum-wall cutout on the Jegs manifold, but the TFS and Dart manifolds also have this feature, and those manifolds are only down by a single-digit compared with the Edelbrock. For a mild street engine (especially with stock or near-stock heads), this low-speed torque value should be given greater consideration.

Now let's talk peak horsepower. While the field gets a little more spread out in this category, the difference between the Third-Place Jegs Champion and the 21st place Edelbrock Performer is only 15 hp—barely a 3 percent increase. By now, it should be obvious that any manifold you choose within the top 20 will work just fine for a street small-block. Keep in mind that this test used really good heads on a large engine. With a mild 350 with near-stock heads, the differences in these manifolds would be much narrower. And we haven't even mentioned price yet.

Peak Torque and Horsepower

Ranking Peak TQ Ranking Peak HP
1st AFR Titon 510 1st AFR Titon 484
2nd Edelbrock 7501 508 2nd Edelbrock 7501 474
3rd Edelbrock EPS 2701 506 3rd Jegs Champion 471
4th Edelbrock RPM 7101 504 4th Edelbrock RPM 7101 470
4th Weiand Warrior 8501 504 5th Pro. Prod 52021 469
4th Edelbrock 2601 504 5th Summit 226014 469
7th Summit 226010 503 7th Weiand 8150 467
8th Summit 226014 502 8th Weiand 8501 466
8th Weiand Warrior 8150 502 9th Edelbrock 7104 465
8th Weiand 8120 502 9th TFS Street Burner 465
11th TFS StreetBurner 501 11th Summit 226010 464
11th Edelbrock 7104 501 11th Dart SHP 464
11th Dart SHP 501 13th Weiand 8125 463
11th Weiand 8125 501 14th Edelbrock 2701 461
15th Chevy ZZ4 500 15th Weiand 8120 459
15th Jegs Champion 500 15th Summit 226012 459
17th Pro. Prod. Typhoon 499 17th Edelbrock 2601 458
18th Summit 226012 498 17th Pro. Prod. 52013 458
19th Prof. Prod. 52013 497 19th Pro. Prod. 52026 457
20th Prof. Prod. 52026 496 19th Chevy Iron 457
21st Edelbrock 2101 494 21st Edelbrock 2101 456
21st Chevy Iron 494 22nd Chevy ZZ4 451
23rd Pro. Prod. Cyclone 487 23rd Pro. Prod. 52001 436

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