To ensure we had plenty of airflow capacity, we bolted on one of Holley’s new 850-cfm Ultra HP carburetors for our test. This is one of the black anodized versions. The carburetor is slightly longer with greater fuel-capacity bowls, and the fuel fitting sizes in the bowls have also changed. To ensure we had plenty of airflow capacity, we bolted on one of Holley’s new 850-cfm Ultr Average Torque If you could only use one factor to rate these manifolds, this would be it. What we found interesting was how the very-short Torker II manifold lived up to its name, making 19 more lb-ft than the Victor Jr. at 3,800 rpm. Also, note that in the middle of this ranking (Team G through the Hurricane), there are 10 manifolds with barely 7 lb-ft of torque between them, so it would be difficult to feel the difference in power between these intakes. The top five manifolds are covered only by a spread of 1 percent average torque. 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 G 478.4 17th Edelbrock Super Victor 23 477.4 18th Edelbrock Torker II 466.5 19th Weiand X-CELerator 472 We managed to convince RHS to let us test one of the very first, new single-plane RHS manifolds off the assembly line, which happened to be an EFI version. RHS bolted injectors and a fuel rail in place to seal the holes that allowed us to use the carburetor. We managed to convince RHS to let us test one of the very first, new single-plane RHS mani Average Torque Per Dollar Next, we combined the two most important test criteria to rate how the average power was affected by price. Think carefully here, because the least expensive manifold is not necessarily the best buy; for example, the top two manifolds here are the worst in terms of overall power. Assuming power trumps price, then the Summit manifold really shines, as it placed mid-pack in average torque and is attractively priced at only $189.95, making 2.53 lb-ft of torque for every dollar spent. The next best manifold is the Holley Strip Dominator, which made more torque but costs an additional $30. At the bottom of the category are the Wilson and AFR manifolds with fractional numbers because their cost is higher than their average torque. Ranking Average TQ/$ 1st Edelbrock Torker II 3.11 2nd Weiand X-CELerator 2.84 3rd Summit 2.53 4th Holley Strip Dominator 2.34 5th Pro Products Hurricane 2.29 6th Weiand Team G 2.27 7th Pro Products Hurricane Plus 2.11 8th Edelbrock Victor Jr. 2.04 9th Pro Comp Shootout Pro 1.99 10th Edelbrock Super Victor 23 1.91 11th Pro Products Super Hurricane 1.85 12th Holley Dorton 1.74 13th RHS 1.62 14th World Products Motown 1.60 15th Brodix HV1000 1.35 16th Edelbrock Super Victor II 1.29 17th Dart 1.14 18th AFR Titon 0.84 19th Wilson 0.54 A quick cue to how well a manifold will perform is simple carburetor height. A taller carb position creates a larger plenum that allows a gentler radius for the heavier fuel to make the transition from vertical flow out of the carburetor to horizontal flow into the intake ports. A quick cue to how well a manifold will perform is simple carburetor height. A taller carb Carb Pad Height This is a simple evaluation: The manifold will either fit under your hood or it won't. The carb pad height measurement is the distance from the carb-mounting pad to the bottom of the rear china wall where the manifold seals to the block. If you already have an engine in the car, you can measure your manifold and compare that height with any of the manifolds tested here. One technique to check fitment is to place a lump of soft clay on top of the air cleaner at the closest point to the hood. Then close the hood carefully and measure the height of the compressed clay to determine the clearance. An interesting result here is how well the Weiand Team G and Victor Jr. manifolds performed, considering their attenuated height. Manifold Carb Pad Height Weiand X-CELerator 4.00 Weiand Team G 4.50 Edelbrock Torker II 4.55 Edelbrock Victor Jr. 5.04 Wilson Ported Super Victor 5.50 Edelbrock Super Victor 5.50 RHS 5.50 Dart 5.60 World Products Motown 5.63 AFR Titon 5.64 Holley Strip Dominator 5.71 Brodix HV1000 5.76 Pro Comp Shootout Pro 5.85 Pro. Products Super Hurricane 5.85 Pro Products Hurricane 52031 5.87 Pro Products Hurricane Plus 5.90 Holley Dorton 6.10 Summit 6.30 Edelbrock Super Victor II 6.85 Here’s a look at the Wilson Sportsman porting (left) versus the stock Super Victor. Appearances are deceiving, because the porting is worth 17 hp. Here’s a look at the Wilson Sportsman porting (left) versus the stock Super Victor. Appearances are deceiving, because the porting is worth 17 hp. Parts List Description PN Source Price TFS 215cc heads 32400007 Summit Racing $1,449.95 Crane roller cam 118741 Summit Racing 400.00 Crane roller lifters 11519-16 Summit Racing 428.80 Crane timing set 11976-1 Summit Racing 141.20 Crane pushrods 95635-16 Summit Racing 156.80 Crane thrust button 99164-1 Summit Racing 14.00 Crane roller rockers 11755-16 Summit Racing 395.20 Fel-Pro head gasket 1143 Summit Racing 88.95 (2) Fel-Pro intake gasket 1206 Summit Racing 16.95 MSD crank trigger 8615 Summit Racing 255.95 MSD distributor 85551 Summit Racing 235.95 MSD plug wires 31229 Summit Racing 84.95 Autolite spark plugs AR3933 (8) Summit Racing 28.00 ARP head bolts 134-3701 Summit Racing 84.28 ARP intake bolts 434-2001 Summit Racing 33.70 Permatex Ultra Gr. 82194 Local Auto Parts 7.49 One of the great-performing intakes is the AFR two-piece composite, which is not particularly tall but made the most average torque and still made 541 hp. AFR offers tapered spacers and an open-plenum spacer that would add perhaps another 5 hp. One of the great-performing intakes is the AFR two-piece composite, which is not particularly tall but made the most average torque and still made 541 hp. AFR offers tapered spacers and an open-plenum spacer that would add perhaps another 5 hp. SOURCES Brodix 301 Maple P.O. Box 1347 Mena AR 71953 479-394-1075 www.brodix.com Federal-Mogul 26555 Northwestern Hwy. Southfield MI 48034 248-354-7700 www.federal-mogul.com Professional Products 12705 South Van Ness Avenue Hawthorne CA 90250 323-779-2020 www.professional-products.com Weiand Bowling Green KY www.holley.com Wilson Manifolds Ft. Lauderdale FL 954-771-6216 www.wilsonmanifolds.com Edelbrock 2700 California St Torrance CA 90503 310-781-2222 www.edelbrock.com Racing Head Service 3416 Democrat Road Memphis TN 38118 877-776-4323 www.racingheadservice.com Bill Mitchell Products 51 Trade Zone Court Ronkonkoma NY 11779 631-737-0372 http://www.theengineshop.com/ Permatex 10 Columbus Blvd. Hartford CT 06106 8-77/-376-2839 www.permatex.com « | 1 | 2 | 3 | 4 | 5 | 6 | View Full Article By Jeff Smith Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!