Whipple 3.25" 10-Rib 5-Bolt Supercharger Pulley 3.8L SCP-103250-5
Overview
The Whipple 3.25" 10-Rib 5-Bolt Supercharger Pulley is engineered for serious high-boost applications running a Whipple 3.8L supercharger. Precision-machined from 6061-T6 billet aluminum and finished in a durable hard-coat black anodize, this pulley is built to withstand extreme RPM, belt load, and heat without sacrificing reliability.
Each Whipple pulley features lightweight pocketing to reduce rotating mass while maintaining strength, along with an integrated belt-guard design to help prevent belt walk during aggressive street or track use. The running diameter is laser-engraved directly on the pulley for quick identification during tuning or pulley swaps.
Designed specifically for 10-rib belt systems, this 3.250" pulley is ideal for high-power builds where belt control and consistency are critical. As a general guideline, every .125" change in pulley diameter equates to approximately 1 PSI of boost, though actual results will vary depending on engine configuration and airflow.
Performance Highlights
- Precision CNC-machined from 6061-T6 billet aluminum
- 3.250" running diameter for Whipple 3.8L superchargers
- 10-rib design for maximum belt grip under high boost
- 5-bolt mounting pattern
- Hard-coat black anodized for wear and corrosion resistance
- Lightweight pocketing reduces rotating mass
- Integrated belt guard helps prevent belt wandering
- Laser-engraved running diameter for easy identification
Quick Specs
- Part Number: SCP-103250-5
- Pulley Diameter: 3.250 inches
- Belt Type: 10-Rib
- Mounting: 5-Bolt
- Material: 6061-T6 Billet Aluminum
- Finish: Black Anodized
- Application: Whipple 3.8L Supercharger Only
FAQs
How much boost change should I expect from this pulley?
A common rule of thumb is roughly 1 PSI of boost for every .125" change in pulley diameter, though actual boost levels will depend on engine setup, airflow, and supporting modifications.
Can this pulley be used on other Whipple superchargers?
No. Whipple supercharger pulleys are application-specific. This pulley is designed exclusively for Whipple 3.8L superchargers and should not be used on other models.
Why Buy from Beefcake Racing?
Beefcake Racing works directly with Whipple Superchargers to offer genuine, race-proven components backed by expert support. Whether youre dialing in boost for a street build or pushing limits at the track, our team can help you choose the right pulley for your setup. Call 1-855-827-7223 or email sales@beefcakeracing.com.
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
