Vortech Superchargers Cog Pulley Package - 27T S/C / 77T Crank Underdrive (1986-1993 Mustang 5.0) 8E031-027
35mm Cog Drive Pulley Package for 1986-1993 Ford Mustang 5.0
The Vortech Superchargers Cog Pulley Package (PN 8E031-027) is engineered for 1986-1993 Ford Mustang 5.0L applications utilizing a 35mm cog supercharger drive system. This package combines a 27-tooth supercharger pulley with a 77-tooth crank underdrive pulley, delivering precise, slip-free power transmission for high-load and competition-oriented builds.
Designed specifically for Vortech-equipped Fox Body Mustangs, this cog pulley configuration provides consistent belt engagement under boost while maintaining compatibility with a 4.75-inch 6-rib accessory drive for factory-style front-end accessories.
Cog Drive Performance Advantages
Cog drive systems completely eliminate belt slip, making them ideal for aggressive boost levels and sustained high-RPM operation. The 27T/77T tooth-count pairing offers a distinct drive ratio option for dialing in supercharger speed and boost characteristics, delivering predictable boost curves and repeatable performance in demanding street/strip and race applications.
Included Components
- 27-tooth supercharger cog drive pulley (35mm pitch)
- 77-tooth crank cog underdrive pulley (35mm pitch)
Application Details
- Designed for 1986-1993 Ford Mustang 5.0L
- All crank pulleys are 35mm cog
- Compatible with 4.75" 6-rib accessory drive
- Intended for Vortech cog-drive supercharger systems
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 8E031-027
- Vehicle: 1986-1993 Ford Mustang 5.0L
- Supercharger Drive: 35mm Cog
- Supercharger Pulley: 27 Tooth
- Crank Pulley: 77 Tooth Underdrive
- Accessory Drive: 4.75" 6-Rib
FAQs
- What is the advantage of a 77-tooth crank underdrive pulley?
The larger tooth-count crank pulley changes the drive ratio, allowing fine adjustment of blower speed and boost output for specific engine combinations. - Is this package street friendly?
Cog drive systems are best suited for high-performance street/strip or race applications where belt slip control and boost consistency are critical.
Emissions & Legal Notice
- NOT AVAILABLE OR LEGAL FOR SALE IN CALIFORNIA
- For off-road and competition use only
- Installation on emissions-controlled vehicles driven on public roads may violate federal emissions laws
Fitment
- 1986 Ford Mustang 5.0L
- 1987 Ford Mustang 5.0L
- 1988 Ford Mustang 5.0L
- 1989 Ford Mustang 5.0L
- 1990 Ford Mustang 5.0L
- 1991 Ford Mustang 5.0L
- 1992 Ford Mustang 5.0L
- 1993 Ford Mustang 5.0L
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized Vortech Superchargers dealer with extensive experience supporting Fox Body Mustang supercharger builds. From selecting the correct cog ratios to ensuring durability at elevated boost levels, our team helps you configure your setup for reliable, repeatable performance.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
