Superchargers & Accessories

Boost is Best: Superchargers and Accessories for Pontiac V8s at Butler Performance

1. Butler Custom ProCharger Kits: Max Power Solutions

Butler Performance doesn't just sell off-the-shelf superchargers; they offer proprietary, fully engineered kits designed and tested in-house on their own dyno.¹ These kits are intended for maximum power output and are centered around ProCharger head units.

• 900 and 1200 Series Engines/Kits: These kits are the core of Butler's most extreme builds, named for the horsepower they are capable of achieving (over ²$900 \text{ hp}$ on pump gas and over ³$1,200 \text{ hp}$ on race fuel/E85).⁴

   

   

• Serpentine Drive Kits (Up to 925 hp):⁵ Utilizes a dedicated serpentine belt system for the supercharger drive. This is a highly reliable option for street/strip cars, providing enough grip to handle significant boost levels. This kit includes the ProCharger F1 head unit and custom CNC mounting plates and brackets.⁶

   
   

   

• Cog Drive Kits (Up to 1250 hp): Designed for maximum effort race engines, the cog drive system uses a toothed belt and pulleys, eliminating any belt slip and ensuring maximum, consistent boost pressure. This setup is necessary for four-digit horsepower figures.

• Component Integration: Butler's kits include custom-designed CNC billet mounting plates and head blocks that ensure perfect fitment and rock-solid stability, essential components often missing from generic kits.⁷ The kits also include specialized items like the ATI balancer and the Crank Pinning Kit to prevent the crankshaft pulley from spinning.⁸

   
   

   

2. TorqStorm Supercharger Kits: Accessible Boost

For builders looking for excellent performance and value, Butler Performance also carries complete supercharger kits from TorqStorm.⁹ These self-contained, centrifugal superchargers offer significant power gains.

• Single and Twin Charger Kits: TorqStorm offers single supercharger kits capable of supporting ¹⁰$700 \text{+ hp}$, as well as Twin Supercharger Kits (2XR) capable of exceeding ¹¹$1,500 \text{ hp}$.¹²

   

   

• Complete System Options: Kits are available for 326-455 Pontiac V8s and include the supercharger, hoses, tubes, Blow-Off Valve (BOV), brackets, and pulleys.¹³ Options are provided for both V-belt and 6-rib serpentine drive systems, often including accessories like an A/C compressor, power steering pump, and alternator.¹⁴

   
   

   

• Chassis Specifics: Specialized kits are offered for common applications like the 1967-1969 Firebird (F-Body) to account for specific chassis and engine bay limitations.

3. Essential Supercharger Accessories

Adding boost requires upgrading several supporting components to maintain safety and peak performance.¹⁵

• Air Inlet/Discharge:

  • Blow-Off Valves (BOV): Butler offers high-flow race valves from ProCharger and others.¹⁶ The BOV releases pressure when the throttle is suddenly closed, protecting the supercharger and throttle plate from back-pressure spikes.

     

     

  • Carburetor Hats: Essential for carbureted blow-through systems, these low-profile hats (like the ProCharger Low Profile Carb Hat) create a sealed environment over the carburetor, allowing the pressurized air to be forced down the throat.¹⁷

     

     

• Drive System Protection:

  • Crank Pinning Kits: The Butler Crank Pinning Kit is crucial for supercharged engines.¹⁸ It's a specialized tool that allows the builder to drill and pin the harmonic balancer to the crankshaft, preventing the extreme forces of the supercharger drive belt from shearing the stock woodruff key.¹⁹

     

     

• Pulleys and Belts: Individual supercharger head unit pulleys, crank pulleys, and cog belts are available to allow the builder to fine-tune the boost level for different fuels and engine configurations.²⁰

   

   

By providing these expertly engineered kits and specialized supporting accessories, Butler Performance is the definitive source for reliable, high-horsepower forced induction solutions for the classic Pontiac V8.