I found in testing a Chev 383 with a 230230 @.050 camshaft making peak Hp at 5900RPM the Victor Jr made 4 Hp more than an RPM Airgap, but lose 30ft/lbs torque at 3500RPM

I copied and pasted the bottom line details from a Car Craft Magazine article on intake manifolds.

It show why I mostly use the Edelbrook RPM Airgap manifold



Chev 406 Trickflow 215cc heads 232In 240Ex @ .050 LSA 112

Ranking Peak HP

1st Super Victor II 549

2nd Holley Strip Dominator 543

3rd AFR Titon 541

4th Wilson ported Super Victor 540

5th Dart 539 

6th Holley Keith Dorton 538

7th Pro Products Hurricane 536

8th Pro Products Hurricane Plus 535

9th RHS 534

10th World Products Motown 534

11th ProComp Shootout Pro 532

12th Summit 531

13th Brodix HV1000 530

14th Pro Prod. Super Hurricane 530

15th Holley Team G 524

16th Edelbrock Victor Jr. 523

17th Edelbrock Super Victor 523

18th Weiand X-CELerator 505

19thTorker II 492



Ranking Average TQ

1st AFR Titon 492.2

2nd Edelbrock Super Victor II 490.9

3rd Wilson ported Super Victor 488.9

4th Holley Strip Dominator 488.2

5th Holley Dorton 487.6

6th RHS 486.0

7th Pro Products Hurricane 484.9

8th Dart 483.2

9th Pro Products Hurricane Plus 482.9

10th ProComp Shootout Pro 481.8

11th World Products Motown 481.5

12th Brodix HV1000 481.3

13th Summit 480.5

14th Pro Products Super Hurricane 480.2

15th Edelbrock Victor Jr. 479.2

16th Holley Team G478.4

17th Edelbrock Super Victor 23477.4

18th Edelbrock Torker II 466.5

19th Weiand X-CELerator 472

Read more: http://www.hotrod.com/how-to/engine/1306-19-single-plane-small-block-chevy-intakes-test/#ixzz3Sh1cYH1w


Short Manifolds (Less Than 5.00 Inch Carb Pad Height)

Manifold PN Price Peak TQ Peak HP Avg. TQ Carb Ht. TQ at 3,000
Edelbrock EPS 2701 $139.95 506 461 466.2 4.80 476
Edelbrock Air Gap 2601 $225.95 504 458 464.7 4.92 478
Chevrolet ZZ4 10185063 $239.95 500 471 464.5 4.95 467
Weiand Street Warrior 8125 $151.95 501 463 463.5 3.65 470
Weiand Street Warrior 8120 $134.95 502 459 462.8 4.62 471
Summit Stage 1 226012 $131.95 498 459 461.0 4.65 468
Edelbrock Performer 2101 $157.95 494 456 459.1 4.60 470
Prof. Prod. Cyclone 52001 $143.95 487 436 449.3 4.72 471


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
PP 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

Ranking Peak TQ Ranking Peak HP
1st AFR Titon 510                          1st AFR Titon 484
2nd Edel RPM Airgap 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

In-Car Power

What will all this power do in a car? We simulated the 7101 Edelbrock Performer RPM's power curve in a 3,450-pound Chevelle with 3.55:1 gears, a 2004R automatic, 3,000-rpm stall-speed converter, 26-inch-tall Mickey Thompson ET Street tires, and shifting at 6,400 rpm. The Quarter, Pro simulation reported that the Chevelle could run 11.50s at 117 mph with a 1.55-second 60-foot time. That's impressive for a 470hp dual-plane–equipped small-block. Keep in mind that strong average torque is what makes this combination so quick. If you recall, our single-plane intake test—with the same 406ci engine with a bigger cam—the motor made as much as 559 hp, but in the same simulated car with the same equipment, the greater horsepower only pushed the Chevelle to 11.30s at 120 mph. With more gear (like a 4.10:1, for example), the car would probably run 11-teens in the higher-horsepower configuration.


Read more: http://www.hotrod.com/how-to/engine/1309-dual-plane-intake-manifold-comparisons/#ixzz3QzdXxXvz
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