Vortech Superchargers 10-Rib 3.87" Drive Pulley (2A031-387)
3.87-Inch 10-Rib Drive Pulley for Vortech Centrifugal Superchargers
The Vortech Superchargers 10-Rib 3.87" Drive Pulley (PN 2A031-387) is a precision-machined supercharger pulley designed for conservative boost configurations on Vortech centrifugal supercharger systems. With its larger 3.87-inch diameter, this pulley further reduces supercharger speed, making it ideal for durability-focused street builds or applications requiring lower boost levels.
This pulley is fully compatible with Vortech V-1, V-2, V-3, and V-7 superchargers utilizing a 10-rib belt drive system. Manufactured to Vortech's strict tolerances, it delivers proper belt alignment, consistent belt grip, and smooth, reliable operation in both street-driven and race-oriented environments.
Key Features & Performance Highlights
- Genuine Vortech Superchargers drive pulley
- 3.87-inch diameter for reduced supercharger speed and lower boost output
- 10-rib belt profile for excellent belt traction and minimized slip
- Precision-machined for accurate alignment and smooth rotation
- Ideal for conservative boost strategies and long-term reliability
Compatibility
- Vortech V-1 Superchargers
- Vortech V-2 Superchargers
- Vortech V-3 Superchargers
- Vortech V-7 Superchargers
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 2A031-387
- Pulley Diameter: 3.87 inches
- Belt Type: 10-Rib
- Application: Vortech centrifugal superchargers
Important Notes
- Boost level changes depend on supercharger model, engine configuration, and crank pulley size
- Proper engine tuning is required when changing supercharger pulley sizes
- Verify belt length, pulley alignment, and system clearance prior to installation
- NOT AVAILABLE OR LEGAL FOR SALE IN CALIFORNIA
FAQs
- Which superchargers does this pulley fit?
This pulley is compatible with Vortech V-1, V-2, V-3, and V-7 superchargers using a 10-rib drive system. - Will a 3.87-inch pulley reduce boost?
Yes. Compared to smaller pulleys, a 3.87-inch pulley reduces supercharger speed and typically lowers boost output, depending on the overall setup.
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized Vortech Superchargers dealer and a trusted source for genuine pulleys and supporting components. If you need help selecting the correct pulley size or dialing in your Vortech supercharger setup, our team is ready to assist.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
