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Carburetor Motor Selection - Old School Ways

Meet New School Technology

Dakota Wentz Feb 12, 2007

Contrary to what some may think, there are still a lot of guys out there who prefer carbureted motors. We gathered up a few heavy-hitters in the carburetor world to give you a taste of what's happening with the ongoing breakthroughs in the carb world. We also rounded up various air filter and plumbing manufacturers to complement the setup. Check it out.

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Barry Grant
From Barry Grant (1450 McDonald Rd., Dept. SC, Dahlonega, GA 30533, 706/864-8544, is the King Demon ''RS'' (Removable Sleeve/Venturi) Carburetor for the race enthusiast. This four-barrel carburetor is blower-calibrated to be most efficient with supercharged engines. While having the primary power valves boost-referenced, and the fuel curve calibrated for optimal performance this carburetor goes even one step further. This four-barrel carburetor utilizes the ''RS'' Features, or removable sleeve, allowing racers to change their carburetor size by simply inserting the correct sleeve/venturi to fit your needs. It also gives you complete freedom on race day with the ability to tune-up your vehicles by changing the carburetor size or using the removable boosters feature to get the peak settings you desire.

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Jet Performance Products
From Jet Performance Products (17491 Apex Cir., Dept. SC, Huntington Beach, CA 92647, 800/535-1161, are modified Holley 2bbl Carbs. Metering blocks are fully modified, and the jetting power valve and accelerator circuits are calibrated for the specific application. These modifications are done to promote maximum off-the-corner torque, as well as straightaway horsepower. A 0.130 needle and seat is installed for high-rpm fuel delivery, and the float is modified to control fuel slosh during cornering and breaking. The carburetor is assembled using the highest quality components and finished with a 3/8-inch fuel inlet.

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Quick Fuel Technology
Quick Fuel Technology's (2352 Russellville Rd., Dept. SC, Bowling Green, KY 42101, 270/793-0900, Professional Series carburetors are designed for racers with a ''no compromise'' approach. Their Pro-Modular construction starts with a Proform main body that receives QFT billet metering blocks loaded with features like Quicktech calibration and stainless idle mixture screws. Attached at either end are lightweight die-cast aluminum fuel bowls with fuel chute bowl fill technology that directs incoming fuel to the bottom of the bowl towards the main jets. Bowls feature #8 fuel inlets, and the package includes #6 adapter fittings. The super-duty throttle body is filled with slabbed throttle shafts that use Torx button head screws for improved airflow and quick-change mechanical secondary. The throttle linkage plate is welded to the shaft for improved durability. At 2 1/2 pounds lighter than a conventional carburetor, the Professional Series is the discriminating choice for outstanding performance. Each carburetor is hand-assembled and engine-tested for proven performance

Sucp_0603_04_z Carburetor_motor_selection Proform 5/20

Proforms (P.O. Box 306, Dept. SC, Roseville, MI 48066, 586/774-2500, Race Series Carburetors are hand-assembled in the U.S.A., utilizing the Proform high-flow carburetor main body, durable billet metering blocks, and a high-performance throttle baseplate. Each carburetor includes a high-flow main body, Dyno-proven horsepower and torque gain, adjustable screw-in air bleeds, high-performance down-leg boosters, maximum air flow, no air horn, choke tower, or choke control, and a high-rate air flow section design.

Sucp_0603_05_z Carburetor_motor_selection Edelbrock 6/20

From Edelbrock (2700 California St., Dept. SC, Torrance, CA 90503, 310/781-2222, are 800-cfm AVS carburetors with manual or electric Choke. They're designed and calibrated for optimum street performance in high-hp small- and big-block engines. The AVS carburetors match with a variety of manifolds that include Edelbrock Performer, Performer RPM, RPM Air-Gap, Torker II, and others of a similar design. All carburetors include metering jets: Primary 0.113, Secondary 0.107; Metering Rods: 0.068x0.047, and Step-Up Spring: Orange (5-inch Hg).

Sucp_0603_06_z Carburetor_motor_selection Holley_performance_products 7/20

The Holley (1801 Russellville Rd., Dept SC, Bowling Green, KY 42102-7360, 270/782-2900, Street Avenger Carburetors are designed from the ground up, 100 percent wet-flow tested, and calibrated for awesome street performance right out of the box. Every carburetor features a no trouble adjustable vacuum secondary, an on-vehicle no-trouble electric or manual choke, and an external no-trouble float adjustment with sight plugs. Every Street Avenger Carb comes factory set and flowed. You can, however, easily adjust your float level to compensate for varying fuel delivery pressure right on your vehicle without the risk of overcompensating. They also have a Generation IV no-trouble power valve with million-mile blowout protection to ensure years of reliable performance. They also use any 9 5/16-inch center-to-center fuel line designed for 4150 Series carburetors.

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Classic Tube
Classic Tube (80 Rotech Dr., Dept. SC, Lancaster, NY 14086, 800/882-3711, has StopFlex hose assemblies for brake and clutch applications to eliminate the spongy pedal feel, and provide greater braking efficiency and clutch operation. The StopFlex hose incorporates a special four-layer design for superior strength, and virtually no volumetric expansion. They start with a Teflon PTFE core (liner), which is wrapped first in a Kevlar braid, followed by an elastomer barrier, and then it's strengthened further by the outer stainless steel braid. StopFlex hoses are also available with a final coat of clear vinyl for a great look and easy clean up.

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Inline Tube
Inline Tube (15066 Technology Dr., Dept. SC, Shelby Township, MI 48315, 800/385-9452, offers stainless steel brake, fuel, and transmission lines for a variety of GM applications. All tubing products are manufactured using state-of-the-art Computer CNC benders. Their laser scanner checks each line for 100 percent accuracy, safety, and fit. Their ability to computer bend saves time and eliminates material waste so you get the highest quality parts on the market at the best price.

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Allflex Technologies
Allflex (860/851-9013, AFX-R7 Series begins with Goodyear's Hysunite Fuel Line/Emission Control Hose because of its flexibility and design for gasohol and later-carbureted vehicle applications with high under-the-hood temperatures. The Hysunite underbraid hose cover is oil- and gasoline-resistant, and withstands exposure to fuel, vapor, moisture, and high heat up to 250 degrees. A high-strength synthetic textile reinforcement coupled with the outer braided steel brings minimum burst to 175 psi, meeting the SAE specification J30R7. Hoses are available for a wide variety of Chevrolet applications.

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Airaid (2688 E Rose Garden Ln., Dept. SC, Phoenix, AZ 85050, 800/498-6951, manufactures direct-replacement filters for just about any Chevrolet. They have a combination of 304 S.S. mesh with five-layer media for durability and efficiency. Airaid uses durable media and premium urethane to bring efficient filtration and a lifetime "No Hassle Warranty."

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Earl's Performance Plumbing
Earl's (19302 S. Laurel Park Rd., Dept. SC, Rancho Dominguez, CA 90220, 310/609-1602, Perform-O-Flex stainless braid-protected synthetic rubber hose is a quality racing hose for Chevrolets. Perform-O-Flex features an inner liner of synthetic rubber and a partial coverage protective sheath of braided steel is embedded in the liner during manufacturing. The reinforced hose liner is then bonded to a full-coverage outer protective sheath of high-tensile braided stainless. Perform-O-Flex, with its inner liner, still remains flexible at temperatures between -40 and +300 degrees F.

Sucp_0603_13_z Carburetor_motor_selection K&n 13/20

From K&N (1455 Citrus St., Dept. SC, Riverside, CA 92502, 800/858-3333, are Generation II Fuel Injection Performance Kits for a wide assortment of Chevrolet Fuel Injected rides. The FIPK is K&N's ultimate performance product designed to increase power by as much as 10 percent. Most FIPK's are street-legal in all 50 states, and come with a 10-Year/Million-Mile Limited Warranty. K&N intake systems replace your vehicle's restrictive factory air filter and air intake housing. K&N intakes are designed to dramatically reduce intake restriction, as they smooth and straighten airflow, which allows your vehicle's engine to inhale a larger volume of air than the OEM air filter assembly; more air means more usable power and acceleration throughout the engine's RPM range. The filters on these kits are washable and reusable. Most intake kits are relatively easy to install using tools commonly available.

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Mr. Gasket
Liven up the engine bay with a stylish new design in air cleaners from Mr. Gasket (10601 Memphis Ave. #12, Dept. SC, Cleveland, OH 44144, 216/688-8300, Mr. Gasket Air Cleaners are now available in three eye-catching shapes: round, triangle, and oval. They are also available in three different designs: wild flames, smooth ball-milled, or classic polished aluminum. All Air Cleaner Sets come with a quality paper filter, carburetor stud, and a 5 1/8-inch neck

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Accel Kool Blue
Accel Kool Blue (10601 Memphis Ave. #12, Dept. SC, Cleveland, OH 44144, 216/688-8300, is now offering an all-new, high-performance filter called Kool Street. This filter provides increased airflow while filtering particles as small as 2.8 microns. Its one-piece construction eliminates turbulence, which also greatly improves air flow, and fits all popular four-barrel carburetors using their 5-inch velocity stack which is supplied with the filter, and designed to further smooth out the air for maximum horsepower gains. The Kool Street Filter is built using four layers of 100 percent cotton gauze sandwiched between galvanized steel and plastic-coated mesh. Due to the strength and rigidity of the construction, they have been able to increase the surface area and eliminate the need for supports, which can create turbulence resulting in HP loss.

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Russell (2700 California St., Dept. SC, Torrance, CA 90503, 310/781-2222, Nitrous hose assemblies are constructed using Russell Power-Flex stainless braided steel hose. The Russell hose ends feature precision crimp installation using a hydraulic crimping method that provides the ultimate leak-free connection. Use blue hose ends for nitrous, and red for fuel lines.

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Xtreme Racing Plumbing
New from XRP (5630 Imperial Hwy., Dept. SC, South Gate, CA 90280, 562/861-4765) are direct-mount, full-swivel adapter fittings for Setrab stack plate oil coolers. These anodized aluminum adapter fittings are designed to mount directly onto Setrab Oil Cooler inlets, M22x1.5 thread sizes 6 through 16. They are for use with XRP HS 79 Smooth-Bore Teflon hose, Braided Stainless Steel CPE hose or CPE Elastomer Push On hose. The adapters are full-swivel for easy adjustment and installation. They're available at 90, 45, 30, 60, 120, 150, and 180 degrees by special order.

Sucp_0603_19_z Carburetor_motor_selection Billet_specialties 18/20

Billet Specialties
Billet Specialties (500 Shawmut Ave., Dept. SC, La Grange, IL. 60526, 800/245-5382) Dual Quad Air Cleaners feature an adjustable base to easily fit carb spacings from 6 7/16 to 8 7/8 inches. K&N lifetime air filter is included with each air cleaner. All air cleaners are CNC-machined, ball-milled and complete with logo designs. Each air cleaner comes complete with mirror finish and stainless mounting hardware. All air cleaners feature standard size air filter elements that can be found at any auto parts store for easy replacement.

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The Carb Shop
The Car Shop (1461 E. Philadelphia, Dept. SC, Ontario, CA 91761, 909/947-3575, can build any carburetor to your specifications. Whether it's a street, Pro Stock, supercharged, whatever the case, they can handle it. Each carburetor undergoes various steps including: sizing all the fuel and air passages; check and correct all the metering blocks to ensure that they are flat; install and align boosters; calibrating the fuel curve in the metering block(s); air bleeds and booster signal to your engine combination; removing the choke tower; trimming the primary and secondary throttle shafts; installing the appropriate type of floats; enlarging the venture to achieve maximum air flow; and recoloring the carburetor. On top of that, before a carburetor leaves the shop it is dyno tested at the facility to ensure maximum efficiency.

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S&B Filters
The new S&B Filters (909/947-0015, '04-'06 Chevy Duramax Diesel 6.6L LLY Intake Kit was designed with a two-piece tube and center hose adaptor that allows the assembly to flex without sacrificing flow during high-torque upgrades. Built with a four-inch cross-linked polyethylene tube and airbox and stainless steel hardware, the kit is designed for hot and cold climates. The high-flow airbox shields the filter from underhood contaminants and engine heat. The clear LEXAN lid on the airbox allows for easy filter inspection without the hassle of removing the airbox. The kit also comes with an S&B designed 8-layer filter.



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