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Home > Supercharger Kits > Chevrolet / GM Supercharger Kits > Small Block Chevrolet with Carby Enclosure Vortech

Chevrolet / GM Supercharger Kits

Small Block Chevrolet with Carby Enclosure Vortech Kits

This is a revised "universal" supercharging system designed for vehicles equipped with carbureted small block Chevrolet engines. Horsepower gains depend on boost levels, engine efficiency, etc., but can range from 30-75%. It offers improved application flexibility, increased supercharger mount rigidity and simple integration with existing OEM drive configurations. Installation time will also vary depending on application, but can range from 4-10 hours. This system has been verified to fit on 1970-1973 Camaro/Firebird (w/cowl hood), 1964-1972 Chevelle and 1955-1957 sedan (BelAir/210 etc.) and 1968-1973 Nova/Chevy II.

System Dimensions

Quality Features:

  • Horsepower gains, depending on boost levels, engine volumetric efficiency and other factors, range from 30% to more than 75%.
  • Vortech gear driven supercharger for unmatched reliability.
  • Supplied Belt/Pulley ratio will produce approximately 8-10 psi at 5500 rpm on a mildly modified 350 cubic inch motor (S-Trim systems)
  • Technologically advanced, high-efficiency impeller and housing design developed in Vortech's supercharger test cell to meet SAE J1723 Standard.
  • Cast aluminum carburetor enclosure assembly for use with Holley #4150 or Demon 750 MD carburetor. The enclosure pressurizes the float bowls and throttle shafts for seamless response. It features front and rear -8 AN fuel inlet ports as well as multiple locations for pressure/vacuum connections. Linkage arms, splined shaft, and left/right hand spherical rod ends are included for simple throttle connection and adjustment. Carburetor studs are also supplied. For more on the carburetor enclosure click here.
  • Oil feed and oil drain assemblies deliver the best possible lubrication and cooling for the supercharger, even under sustained boost conditions.
  • Cast aluminum mounting bracketry with all necessary hardware.
  • 3/8" thick nickel plated steel for rigid supercharger attachment.
  • Inlet and discharge duct connection utilize-heat resistant silicon sleeves and premium quality stainless steel clamps. 10-rib, 6061-T6 billet aluminum supercharger crank pulley with hard anodize finish (6" diameter) and pulley spacer.
  • Integrated manual belt tensioner assembly with dual bearing tensioner pulley
  • High-flow, reusable air filter

Please Note

Installation of this system requires a high volume fuel pump and properly jetted 4150 style carburetor must include mechanical secondaries, correct needle and seat and possibly a nitrophyll float set, depending on boost level. For '67-'69 Camaro/Firebird applications, in addition to the cowl hood, minor under hood trimming may be necessary and we recommend using an Edelbrock Victor Jr. manifold. For best results, we suggest a compression ratio range of 8:1 to 9.5:1 with 9:1 being ideal. A mild "street" camshaft is best since a centrifugal supercharger by nature doesn't require a lot of overlap for maximum efficiency. On early engines, a high-performance, boost referenced mechanical fuel pump will provide the necessary fuel in most applications. Late model motors may require an electrical fuel pump and a boost referenced fuel pressure regulator providing 6 lbs. of pressure. This system was designed to fit on engines equipped with a "long" water pump and OEM V-belt drives or serpentine accessory drives. For correct belt alignment, the proper accessory drive crank pulley and accessory bracketry must be used. These components are not supplied in this system. Earlier models equipped with short water pumps will require a long water pump to be installed. For engines equipped with power steering and V-belt accessory drives, a Saginaw style pump will be required as well as an optional Vortech power steering assembly (4GP110-051).

Polished finish systems include the discharge tube shown on the engine above and a 3-ply fiberglass reinforced silicone discharge hose (not pictured) for universal installation.

Optional / Essential Components 

The following is a list of parts that are not included, but may be required for complete system operation:

Supercharger pulleys and belts: contact technical department for proper application match

  • 4MA031-312: 3.12" diameter 10 rib driven pulley 
  • 4MA031-333: 3.33" diameter 10 rib driven pulley 
  • 4MA031-347: 3.47" diameter 10 rib driven pulley 
  • 4MA031-360: 3.60" diameter 10 rib driven pulley 
  • 4MA031-387: 3.87" diameter 10 rib driven pulley 
  • 4MA018-051: 7.00" diameter 10 rib drive (crank) pulley 
  • 2A041-618: 10-rib 61.8 inch belt 
  • 2A041-630: 10-rib 63.0 inch belt 

Compressor bypass valve and flange (may not be required): contact the technical department to determine the proper valve selection for your application

  • 8D204-001: Maxflow Race bypass valve 
  • 8D004-052: Race bypass weld-on flange (aluminium) 
  • 8D103-001: Mondo bypass valve 
  • 8D003-052: Mondo bypass weld-on flange (aluminium) 

Fuel line/fitting kit for Vortech carburettor enclosure including custom bent stainless steel lines, billet -8 AN bulkhead adapter with fuel pressure port and plug, -8/-6 AN junction tee, aluminium swivel hose ends and USCG approved fuel hose (Required)

  • 8M110-020: Holley #4150 Series (w/dual metering blocks) SS Fuel Line Kit 
  • 8M110-030: Demon #750 MD Series Fuel Line Kit 

Aftermarket ignition amplifier (not required, but recommended)

  • 5A001-008: Crane HI-6 ignition amplifier box w/ rev-limiter 

Supercharger air inlet ducting/air filter

  • 4FA012-012: 3.5" dia. x 90º plastic inlet elbow 
  • 7S350-001: 3.5" dia. x 180º cast aluminium inlet elbow 
  • 7S350-200: 3.5" dia. x 2" silicone sleeve 8H040-030: air filter, 3.5" dia. flange x 6" L 
  • 8H040-040: air filter, 3.5" dia. flange x 5.5" L 

Miscellaneous Components

  • 8M011-001: Air diffuser. 5.75" diameter x 2.5" tall. Mounts on top of 4150 carburettor when installed in Vortech carburettor enclosure. This diffuser stabilizes the airflow entering the carburettor in "blow-through" applications which allows for smoother operation and improved idle when supercharged 
  • 4GP116-011" Accessory Drive Crank Pulley/Spacer Assembly (for engines equipped with "long" style water pump) 
  • 8F001-305: High flow mechanical fuel pump. Fits small block Chevrolet engine. Flows up to 130 gph. Supports up to 14 psig fuel pressure 
  • 8M003-041: Straight Flange, inlet to 3.5" hose 
  • 8M012-011: 90º Flange, inlet to 3.5" hose 

Pulley / Belt Combinations

The following table can be used to determine crank pulley diameter, supercharger pulley diameter and belt length based off an approximate boost level. (ie, if you have an engine with modified heads and want 10psig, you would use the 7" crank pulley, 3.47" supercharger pulley, and 2A041-630 belt.)

Approximate Boost Level* Crank Pulley/Supercharger Pulley 
Diameter and Vortech Belt Number -
Stock/Minor Engine Modifications
Crank Pulley/Supercharger Pulley 
Diameter and Vortech Belt Number - 
Modified Heads/Cam Shaft
7 psig 6"/3.60" 2A041-618 6"/3.47" 2A041-618
9-10 psig 6"/3.47" 2A041-618 7"/3.47" 2A041-630
12-14 psig 7"/3.33" 2A041-630 7"/3.12" 2A041-630

*Estimated boost levels based on 350 cubic inch engine at 5500 rpm max.

Part  Descripton  Boost  Power  Retail
Number        (FW)  (Inc. GST)
Universal Small Block Chev Carburetted Kit, V-2 Si, Satin $5995.00
Universal Small Block Chev Carburetted Kit, V-1 H/D Ti, Satin $6795.00
Universal Small Block Chev Carburetted Kit, V-7 YSi, Satin $7295.00
NOTE: Polished Small Block Kits Available - Add $500.00  
Universal Small Block Chev Carburetted Kit, V-2 Si, Satin **NO ENCLOSURE** $5295.00
Universal Small Block Chev Carburetted Kit, V-1 H/D Ti, Satin **NO ENCLOSURE** $5995.00
Universal Small Block Chev Carburetted Kit, V-7 YSi, Satin **NO ENCLOSURE** $6595.00
Universal Small Block Chev Carburetted Kit, V-7 YSi Gilmer, Satin **NO ENCLOSURE** $6995.00
NOTE: Polished Small Block Kits Without Enclosures Available - Add $300.00  

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