Using the right Whipple pulley is essential for dialing in the perfect boost on your setup. Our complete Whipple pulley chart highlights pulley sizes, boost levels, and belt options for every Whipple supercharger —from the 2.3L Cobra systems to the new 3.0L Gen 6 Dark Horse systems and everything in between, including GT, GT350, GT500, and F-150 applications. Whether you’re looking for a quick reference guide or comparing setups, this Whipple pulley boost chart makes it easy to see how each configuration performs. See below for vehicle applications, part links, approximate boost level (considering the vehicle is basically stock, otherwise), standard pulley number of ribs, and optional rib/belt upgrades.
| Application/Supercharger size | SKU | Pulley Size | Boost Level | # of ribs (STD) | Rib/Belt upgrade? |
| 2003-04 SVT Cobra | |||||
| 03-04 Cobra 2.3L | 3.50" | 13-14 | 8 | Not available | |
| 03-04 Cobra 2.9L | WK-2110T | 3.50" | 16-17 | 8 | Not available |
| 03-04 Cobra 3.0L | WK-2115C | 3.75" | 16-17 | 8 | Not available |
| 1999-2004 SVT Lightning | |||||
| 99-00 Lightning 2.3L | WK-2000T | 4.00" | 11-12 | 8 | Not available |
| 01-04 Lightning/HD 2.3L | WK-2001T | 4.00" | 11-12 | 8 | Not available |
| 01-04 Lightning/HD 2.9L | WK-2005T | 4.00" | 11-12 | 8 | Not available |
| 2007-2014 Shelby GT500 | |||||
| 07-14 GT500 3.8L | WK-2525T | 3.75" | 18-19 | 10 | Not available |
| 2020-2022 Shelby GT500 | |||||
| 20-22 GT500 3.8L | WK-2550-38 | 3.875" | 18-19 | 8 | Not available |
| 2015-2020 Shelby GT350 | |||||
| 15-20 GT350 3.0L | WK-2621-30 | 3.875" | 11-12 | 6 | 10 rib available |
| 2011-2014 Mustang GT | |||||
| 11-14 Mustang GT 3.0L Stage 1 | WK-2610-STG1-30 | 4.00" | 10-11 | 6 | 10 rib available |
| 11-14 Mustang GT 3.0L Stage 2 | WK-2610-STG2-30 | 3.875" | 11-12 | 6 | 10 rib available |
| 2015-2017 Mustang GT | |||||
| 15-17 Mustang GT 3.0L Stage 1 | WK-2620-STG1-30 | 3.875" | 10-11 | 6 | 10 rib available |
| 15-17 Mustang GT 3.0L Stage 2 | WK-2620-STG2-30 | 3.875" | 11-12 | 6 | 10 rib available |
| 2018-2023 Mustang | |||||
| 18-23 Mustang GT 3.0L Stage 1 | WK-2625-STG1-30 | 4.00" | 9-10 | 6 | 10 rib available |
| 18-23 Mustang GT 3.0L Stage 2 | WK-2625-STG2-30 | 3.875" | 11-12 | 6 | 10 rib available |
| 2019 Mustang Bullitt 3.0L Stage 1 | WK-2626-STG1-30 | 4.00" | 11-12 | 6 | 10 rib available |
| 2019 Mustang Bullitt 3.0L Stage 2 | WK-2626-STG2-30 | 3.875" | 11-12 | 6 | 10 rib available |
| 2021 Mustang Mach 1 3.0L Stage 1 | WK-2627-STG1-30 | 4.00" | 11-12 | 6 | 10 rib available |
| 2021 Mustang Mach 1 3.0L Stage 2 | WK-2627-STG2-30 | 3.875" | 11-12 | 6 | 10 rib available |
| 2024-2025 Mustang GT/Dark Horse | |||||
| 24-26 GT/Dark Horse 3.0L Stage 1 | WK-2640-STG1-30 | 3.875" | 11-12 | 6 | 10 rib available |
| 24-26 GT/Dark Horse 3.0L Stage 2 | WK-2640-STG2-30 | 3.75" | 11-12 | 6 | 10 rib available |
| 2015-2017 F150 5.0L | |||||
| 15-17 F150 3.0L Stage 1 | WK-2311-STG1-30 | 4.00" | 9-10 | 6 | 10 rib available |
| 15-17 F150 3.0L Stage 2 | WK-2311-STG2-30 | 4.00" | 9-10 | 6 | 10 rib available |
| 2018-2020 F150 5.0L | |||||
| 18-20 F150 3.0L Stage 1 | WK-2315-STG1-30 | 4.00" | 9-10 | 6 | 10 rib available |
| 18-20 F150 3.0L Stage 2 | WK-2315-STG2-30 | 4.00" | 9-10 | 6 | 10 rib available |
| 2021-2023 F150 5.0L | |||||
| 21-23 F150 3.0L Stage 1 | WK-2316-STG1-30 | 4.00" | 9-10 | 6 | Not available |
| 21-23 F150 3.0L Stage 2 | WK-2316-STG2-30 | 3.875" | 9-10 | 6 | Not available |
| 2024-2025 F150 5.0L | |||||
| 24-25 F150 3.0L Stage 1 | WK-2317-STG1-30 | 4.00" | 9-10 | 6 | Not available |
| 24-25 F150 3.0L Stage 2 | WK-2317-STG2-30 | 3.875" | 9-10 | 6 | Not available |
Watch the video below where Joe explains everything you need to know about supercharger pulleys. Find out how the right supercharger pulley can take your boosted build to the next level.
