proCharger F1A-91/F1A-94 Head Unit 

The ProCharger F-1A-91 and F1A-94superchargers utilize a compact, 9 inch volute and are powerful and highly versatile superchargers. Like all the ProCharger F-Series models, they feature the industry-exclusive compound bearing design that supports high-horsepower applications, while the patented and proven self-contained oiling design eliminates the need for external oil lines while providing years and years of trouble-free performance.  Enhance the power output of the F1-series with the exclusive Steve Morris Engines PRO-VOLUTE internal and external enhancements for the ultimate in power output!

ProCharger F-1A-94 Specs:
Base HP Range of NA Engine: 300-550 HP
Maximum Supercharged HP Rating: 1,200 HP
Maximum Airflow: 1,625 cfm
Maximum Boost: 38 psi
Inlet Diameter: 4.0 inches
Outlet Diameter: 3.0 inches
Maximum Impeller RPM: 74,000
Internal Step-up Ratio: 5.40:1
Self-Contained Oiling: Yes

Shown with ProVolute Upgrade