Here's a detailed description of the F2 ProCharger Cog Drive Kit for a Small Block Chevrolet (SBC) based on the provided information:

F2 ProCharger Cog Drive Kit for SBC

For sale is an F2 ProCharger Cog Drive Kit for a Small Block Chevrolet (SBC). This kit is complete with the following items:

F2 ProCharger with a Polished Volute / V-Band Housing: The F-2 ProCharger is a self-contained centrifugal supercharger featuring a 10.5-inch volute diameter, designed to significantly increase airflow compared to smaller F-series models [1]. It is known for its combination of compact size and high performance [1]. The F-2 unit can support up to 1,600 horsepower on well-built engines [1] [3] [7]. It operates with an internal step-up ratio of 5.40:1 and has a maximum impeller RPM of 65,000 [3] [7]. The F-2 is capable of producing up to 38 psi of boost [3] [7]. This particular unit comes with a polished finish on the volute, which is an aesthetic upgrade option [4] [10].

10:00 Position Oil Slinger: ProCharger's self-contained (SC) models, including the F-2, feature a patented self-lubrication system that eliminates the need for external oil lines or tapping into the engine's oil pan [1] [3] [4] [7] [10]. This is achieved through an exclusive oil pump that aerates the oil to create a mist for lubricating the precision bearings and gears [1]. This design also prevents heat transfer from engine oil to the supercharger and avoids issues like clogged oil lines or oil drainage problems [1]. The "10:00 Position oil Slinger" likely refers to a specific orientation or component within this self-contained oiling system, ensuring proper lubrication regardless of mounting position.

70 Tooth Crank Pulley: The crank pulley is a critical component of the cog drive system, transferring power from the engine's crankshaft to the supercharger via the cog belt [1] [2] [10]. The 70-tooth count indicates its size and gearing ratio in relation to the blower pulleys. For high-horsepower applications, pinning the crank pulley is often recommended to prevent slippage [4] [6] [10].

48 Tooth Blower Pulley: This is one of the blower pulleys included in the kit. Different pulley sizes allow for varying boost levels and horsepower gains, enabling users to quickly change boost to suit their needs [1] [3] [7]. A smaller blower pulley will result in higher supercharger impeller speed and thus more boost.

56 Tooth Blower Pulley: This is another blower pulley option provided. Having multiple pulleys allows for flexibility in tuning the supercharger's output for different applications or desired power levels [1] [3] [7].

2” Power Grip GT Belt: The cog drive system utilizes a rugged 50 mm-wide (approximately 2 inches) cog belt for power transfer [1] [2] [4] [6] [10]. This type of belt is ideal for builds aiming for 1000-1450+ horsepower due to its robust nature [2] [4] [5] [10]. While cog belts are highly effective for transmitting power, maintaining proper tension is crucial, and they can be susceptible to wear, especially in high-horsepower, street-driven applications or those with manual transmissions [8]. Some users have found custom-made steel-corded poly belts to offer increased durability [8].

Standard Rotation: This indicates that the supercharger is designed for standard engine rotation, which is typical for most automotive applications. ProCharger also offers reverse rotation options for specific engine configurations or space constraints [3] [7].

Cog Drive Bracket for Mounting to a SBC: The mounting brackets for ProCharger systems are typically constructed from 6061 billet aluminum, providing a solid and rigid foundation for the supercharger [1] [3] [7]. This specific bracket is designed for Small Block Chevrolet (SBC) engines, ensuring proper fitment and alignment for the cog drive system [2] [4] [5] [9] [10]. ProCharger offers various bracket options to accommodate different accessory setups (e.g., V-belt or serpentine accessories, with or without A/C and power steering) [2] [4] [5] [10].

Serial # 26318: The serial number is a unique identifier for the specific F2 ProCharger head unit.

5.40 Step Up and 65K RPM: These specifications refer to the internal characteristics of the F2 supercharger head unit. The 5.40:1 internal step-up ratio means the impeller spins 5.4 times faster than the input shaft [3] [7]. The maximum impeller RPM of 65,000 indicates the highest safe operating speed for the supercharger's impeller [3] [7].

This F2 ProCharger Cog Drive Kit is suitable for high-performance SBC applications, particularly those targeting 1,000 to 1,600+ horsepower [1] [2] [3] [4] [5] [7] [10]. It is designed for use with carbureted or aftermarket EFI systems, which will require a custom tune, and typically does not include a programmer, fuel injectors, or a high-performance fuel pump [3] [4] [5]. Intercooler options are available, though this specific kit does not include one [3] [4] [5] [6] [7].

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