B-4760 Severe-Duty Carburetors

The Original lightweight racing carburetor from Braswell released 2005
The Braswell B-4760 Severe-Duty carburetors have become the benchmark for racing carburetors throughout the industry. These carburetors are manufactured from a lightweight, high quality aluminum die-casting. They utilize an better tune entrance combined with our CNC profiled venturi to provide maximal air-flow for any given size. This allows the manipulation of a smaller venturi for better accelerator reply, fuel meter, and atomization. Metering is handled by billet aluminum metering blocks that are fully adjustable. The engine can now safely operate at a lower BSFC, and when by rights tuned produce improved on lead operation, fuel mileage, and locomotive life. Our lightweight Bat lawn bowling fitted with Severe-Duty floats that are set up for the specific application are standard .
B-4760 carburetors are besides available with upgrade Patented Fuel Chute float bowl. The meet main soundbox is then mounted on to our Severe-Duty dual bang form accelerator body fabrication equipped with triple decoration accelerator shafts for legato operation and lastingness. All components are specifically engineered and calibrated for race applications, not converted street cable car technology. This means you wo n’t find any unnecessary substantial or corners cut to utilize existent components .
The B-4760 Series carburetors is offered in three Spec sizes, a600 with 1.22 ” venturi and 1.575 ” accelerator give birth, a 650 with 1.25 ” venturi and 1.688 ” choke yield, and a 750 with 1.375 ” venturi and 1.688 ” choke bear, designed for Spec or Crate Motor classes. Braswell can work with sanctioning bodies to provide simple gauges to insure fair contest and simple technical school. For open competition classes, these carburetors are available with venturi from 1.25 ” up through 1.48 ”, and accelerator bores in either 1.688 ” or 1.75 ” to accommodate the needs of most race engines. Unlike other carburetor shops or builders that just take something off a ledge, this allows Braswell to custom size and calibrate the carburetor to the specific needs of your type of race, locomotive, human body, fuel, track, and driving style .

Features:

  • Calibration for gasoline, methanol, & ethanol
  • Available with Calibrations for most types of racing engines
  • Less than 7lbs race ready
  • 4 corner idle
  • Fully adjustable billet 2 circuit metering blocks
  • Replaceable air bleeds & idle feed restrictors
  • Severe-Duty floats
  • Severe-Duty baseplate with dual bolt pattern, SAE 1-1/2V & 5.38″ x 5.38″
  • 5″ Air cleaner ring
  • Bat bowls with large glass fuel level site windows

*Talk to your salesperson to find out about spacers, fuel logs, fittings, gasket sets, tuning kits, carb covers, restrict stops, and early available accessories to get the most performance out of your new Braswell B-4760 Severe-Duty carburetor*

B-4825 Severe-Duty Carburetors

The Second lightweight racing carburetor from Braswell released 2005
The Braswell B-4825 Severe-Duty carburetor has brought racing carburetor technology into the twenty-first century. This carburetor was designed to fill the needs of both master and sport flat racers alike. It is manufactured from a lightweight, high choice aluminum die-casting. The bear centers have been spread out to improve breeze flow, and fuel distribution. This allows for both larger venturi and throttle bear options while maintaining the proper venturi to throttle wear ratios. This increases fuel atomization which improves both horsepower and drivability. Metering is handled by position aluminum metering blocks that are fully adjustable and available with either 2 or 4 circuit meter. The locomotive can now safely operate at a lower BSFC, and when by rights tuned produce improved on track performance, fuel mileage, and engine life. Our patent whippersnapper Fuel Chute lawn bowling fitted with Severe-Duty floats setup for the specific application are standard. The main body is then mounted on our double bang pattern Severe-Duty restrict body assembly equipped with treble ribbon accelerator shafts for smooth operation and lastingness. All components are specifically subspecies calibrated/engineered, not converted street car technology, this means you wo n’t find unnecessary substantial or corners cut to utilize existing components .
The B-4825 Series carburetor is offered with venturi sizes from 1.40 ” up through 1.68 ”, and accelerator bores of 1.688 ”, 1.750 ”, or 1.790 ”. This allows Braswell to size the carburetor accordingly to achieve the best overall power-band for the given combination, Utilizing the new 4 circuit carburetors lets you run a larger carburetor to obtain more top-end office without sacrificing part strangle drivability or torsion .

Features:

  • Calibrations for gasoline, methanol, & ethanol
  • Available with calibrations for most types of racing engines
  • Less than 7-1/2lbs race ready
  • 4 Corner idle
  • Fully adjustable billet metering blocks
  • Replaceable air bleeds & idle feed restrictors
  • Available with either 2 or 4 circuit metering
  • Severe-Duty floats
  • Severe-Duty baseplate with dual bolt pattern, SAE 1-1/2V & 5.38″
  • Fuel Chute float bowls with large glass fuel level site windows
  • Utilizes 5-5/8″ air cleaner ring

*Talk to your salesperson to find out about spacers, fuel logs, fittings, gasket sets, tuning kits, carb covers, accelerator stops, and other available accessories to get the most performance out of your new Braswell B-4825 Severe-Duty carburetor*

B-7390 Severe-Duty Carburetors


The Braswell B-7390 was specifically designed as a dual 4 barrel application. building on the design and record mount performances set forth by the B-7520 2bbl carburetors, the B-7390 has been taking 4 barrel carbureted engine performance to new levels going to the finals in the first NHRA Pro-Stock race where they were legal. These carburetors are designed to be used where a 4 barrel or “ solid ” carburetor is mandated by rules or preferred for packaging reasons. Their design allows them to be machined in a wide-eyed rate of sizes necessary for nowadays ‘s contest engines. These carburetors offer the ultimate in performance for Pro-Stock, Competition Eliminator, Top-Sportsman, Top-Dragster, Quick-8, and Outlaw race. CNC machined from high quality aluminum die-castings, the B-7390 ‘s are offered in a wide-eyed range of sizes to accommodate engines from 900-2200 plus horsepower for double 4 barrel habit. They feature spread restrict bores for better fuel distribution, longer venturi for smoother fuel meter and an advanced meter arrangement. The fuel jets and their pickups are located so they remain in fluent fuel even when acceleration rates exceed 3.5 G ‘s. The light weight note metering blocks feature a elongated chief meter well and multiple bleed system provide for better meter and tuning flexibility unavailable in the past. The carburetor mounting flange can be used with either the diligence standard 5.38 ” x 5.38 ” hole mounting model or the optimize 5.50 ” x 5.50 ” hole mounting design. The scoop tray flange has been enlarged to an even 8.00 ” diameter. Venturi sizes range from 1.90 ” -2.18 ”, and 2.20 ” -2.55 ” accelerator bores. there are besides two different size booster venturi castings allowing these carburetors to be tailored to the demands of nowadays ‘s race engines .

  • Features:

  • Calibrations for naturally aspirated or N2O applications
  • Can be built for either manual or automatic transmissions
  • Fully adjustable billet metering blocks
  • Replaceable air bleeds, idle feed restrictors, intermediate jets
  • Available with either 4 or 5 circuit metering
  • 2.91″ Throttle bore center lines
  • 8″ Scoop tray opening
  • Industry standard 5.38″ x 5.38″, and 5.50″ x 5.50″ hole mounting pattern
  • Fuel Chute bowls with large glass fuel level site windows
  • Severe-Duty floats

*Talk to your salesperson to find out about manifold inserts, shear plates, fuel fittings, gasket sets, tuning kits, and other available accessories to get the most performance out of your new Braswell B-7390 Severe-Duty carburetor*

B-7395 Severe-Duty Carburetors

The Braswell B-7395 was specifically designed for single 4 barrel applications. build up on the design and record rig performances set forth by the B-7520 2 barrel carburetors, the B-7395 has been taking the single 4 barrel carbureted engine performance to new levels. These carburetors are designed to be used where a single 4 barrel or “ hale ” carburetor is mandated by rules or preferred for packaging reasons. Their design allows them to be machined in a wide range of sizes necessary for today ‘s competition engines. They offer the ultimate in performance for Pulling Trucks, Competition Eliminator, Top-Sportsman, Top-Dragster, Quck-8, and Outlaw race. CNC machined from high quality aluminum die-castng, the B-7395 ‘s are offered in a wide compass of sizes to accommodate rush engines from 600-1600 plus horsepower for single 4 barrel use. They feature banquet choke bores for better fuel distribution, loner venturi for smoother fuel meter and an advanced meter system. The fuel jets and their pickups are located so they remain in liquid fuel flush when acceleration rates exceed 3.5 G ‘s, while allowing the use of exponent valves for extra tune if needed. The light weight quarter metering blocks feature a lengthen main meter well and multiple shed blood systems providing improved meter and tuning flexibility unavailable in the past. The manifold paper mounting flange can be used with either the industry standard 5.38 ” ten 5.38 ” hole mounting blueprint or the optimize 5.50 ” ten 5.50 ” hole mounting model. The vent clean flange has been enlarged to an evening 8.00 ” diameter. Venturi sizes range from 1.90 ” -2.18 ”, and 2.20 ” -2.55 ” accelerator bores. There are besides two different size supporter venturi castings allowing these carburetors to be tailored to the demands of today ‘s race engines .

Features:

  • Calibrations for naturally aspirated, N2O or draw through supercharged applications
  • Can be built for either manual or automatic transmissions
  • Replaceable air bleeds, idle feed restrictors,intermediate jets
  • 4 circuit metering standard
  • 2.91″ Throttle bore centers pattern
  • 8″ Scoop tray opening
  • Industry standard 5.38″ x 5.38″, and 5.50″ x 5.50″ hole mounting pattern
  • Fuel Chute II bowls with large glass fuel site windows
  • Severe-Duty floats
  • Fully adjustable billet metering blocks

*Talk to your salesperson to find out about multiply spacers, shear plates, fuel fittings, gasket sets, tuning kits, and other available accessories to get the most performance out of your newly Braswell B-7395 Severe-Duty carburetor*

B-7520 Severe-Duty Carburetors


The B-7520 2 barrel has become the criterion for multiple carburetion in high horsepower racing engines. It was the beginning in our 7000 series of carburetors. Designed from beginning to finish as a race carburetor, drawing on our over 4 decades of experience in the manufacture of carburetors for motors sports. It was introduced to the market in 2007 to fill the demand for multiple carburetor applications using the 2 barrel format. This new carburetor eliminated the former necessity of having to take a 4 barrel carburetor and cut it in half to make a “ split ”. even when split, the available carburetors which were based on a 40+ year old blueprint have been prove inadequate for today ‘s modern racing engines. The performance of the B-7520 talk for itself, holding current naturally aspirated and N2O records for the quickest and fastest carbureted runs around the global. popular with Mountain Motor Pro Stock, Pro-Mod, Competition Eliminator, Top Sportsman, 10.5 Outlaw, and Quick-8 classes .
CNC machined from aircraft quality aluminum permanent shape castings, the B-7520 is offered in a wide range of sizes to accommodate race engines from 800-2200 plus horse-power. It features banquet accelerator bores for better fuel distribution, longer venturi for smoother fuel meter and a wholly advanced meter organization. The fuel jets and their pickups are located so they remain in liquid fuel flush when acceleration rates exceed 3.5 G ‘s The light weight note metering blocks feature a lengthen independent meter well and multiple run systems provide improved meter and tuning flexibility unavailable in the past. The manifold mounting flange uses the industry standard 2.75 ” ten 5.38 ” hole traffic pattern, while the exclusive tray uses a 3.75 ” ten 6.71 ” ellipse open. Both of these fix patterns are symmetrical to the C/L of the carburetor. The size offered stove from 1.90 ” -2.22 ” venturi and 2.20 ” -2.60 ” restrict bores. Two different size booster venturi castings provide even grater flexibility. available with either 4 or 5 circuit meter.

B-7520 Severe-Duty Carburetor

Features:

  • Calibrations for naturally aspirated or N2O applications
  • Can be built for either manual or automatic transmissions
  • Fully adjustable billet metering blocks
  • Available with either 4 or 5 circuit metering
  • Replaceable air bleeds, idle feed restrictors, intermediate jets
  • 2.96″ Throttle bore centers
  • Industry standard 5.38″ x 2.75″ hole mounting pattern
  • Utilizes symmetrical 3.75″ x 6.71″ scoop tray opening
  • Severe-Duty floats
  • Fuel Chute bowls with large glass fuel level site windows

*Talk to your salesperson to find out about manifold inserts, fleece plates, fuel fittings, gasket sets, tuning kits, and other available accessories to get the most performance out of your new Braswell B-7520 Severe-Duty carburetor* **The strangle end is an available accessory and is not included with your carburetor**

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