Transmission Solutions
Automatic-to-manual swaps, gearbox upgrades, and engineered adapters—installed in our shop or supported with precision parts.
What We Do
Many Porsche owners want the engagement of a manual gearbox—whether converting from Tiptronic or another automatic, upgrading to a stronger transmission, or pairing a manual with an LS conversion. CPE designs and fabricates the adapters, mounts, and hydraulic solutions needed for a reliable install.
We handle cable and hydraulic clutch setups, shifter positioning, and driveline alignment so your Porsche shifts cleanly on the street or track. Full in-house labor is available; we also supply components for experienced builders and for projects already on a Porsche LS swap kit path (clutch kits, flywheels, and related driveline pieces).
Tiptronic and other automatics. Owners who want pedal and clutch engagement without living with the factory automatic box are a primary audience for CPE manual conversion work—whether the car keeps factory power for now or is headed for an LS later.
LS conversion path. For LS programs, Chavis Performance & Engineering engineers around a manual transaxle. As stated in our FAQ: Tiptronic and PDK are not supported for the LS conversion as-is. If you have an automatic car, converting to a manual first (or as part of the overall project plan) is the route we use.
Manual-to-manual upgrades. Some projects need a stronger or different manual gearbox, revised clutch packaging, or cleaner shifter geometry when power or use-case outgrows the original setup. We scope those as driveline projects, not one-size bolt-ons.
We do not engineer CPE LS conversion packages to keep Tiptronic or PDK in place. That is a hard product boundary so owners plan the right sequence: get the car on a manual transmission path that our mounting, clutch, and integration packages are designed around.
PDK and Tiptronic differ in control systems and service reality. We do not publish one-size PDK “tear-down tutorials” on this page—those cars need a real conversation about parts sourcing, donor manual gearboxes, electronics scope, and budget before any hardware is ordered. Use the FAQ transmission answer and then call or email the shop with your VIN-level setup.
Owners already on a factory manual who only need clutch, flywheel, or gearbox-side upgrades during an LS project should start with Clutch Kits & Flywheels in the store and the transmission planning guide.
Manual conversion pricing is project-specific (chassis, donor gearbox availability, hydraulic vs cable decisions, and how much fab is already complete). We do not publish a single flat retail number that would mislead half of the cars that land on this page.
When a manual conversion is bundled into a full in-house LS conversion, that larger program has published bands in the FAQ— turnkey in-house LS work typically starts around $45,000 for RWD or AWD cars, with extras (aero, suspension, paint, heavy customization) adding from there. DIY LS parts packages for common LSx-to-996/997 paths sit in a different band (~$12,000 shipped for a complete conversion kit style package—options and freight change the total). Manual-only work is quoted separately when it is not part of those kits.
For budget planning on the engine swap itself, read the Porsche LS swap cost guide.
1. Confirm chassis and transmission type. 2. Decide standalone manual conversion vs combined LS project. 3. Contact CPE with photos and goals—or browse conversion parts if you already know the subsystems you need.
Related: FAQ — transmission policy · LS swap transmission options · LS swap kits & parts