In-House Builds

Porsche 996 & 997 LS3 Conversions

Our core platform: water-cooled 911 LS3 conversions with proven packages, professional installation, and comprehensive conversion systems.

We Specialize in Porsche 996 & 997 LS3 Conversions

The Porsche 996 and 997 generations are the backbone of modern water-cooled 911 LS swapping—and Chavis Performance & Engineering invests more in-house development here than on any other chassis. A 996 LS swap or 997 LS swap delivers dramatic gains in horsepower, torque, and service simplicity when executed with purpose-built mounts, cooling, and wiring.

We offer professional Porsche 996 LS conversion and 997 LS conversion services in our Baltimore shop, including featured LS3-oriented packages with starting pricing around $40,000 (final quotes depend on chassis, transmission, and selected options). For builders outside Maryland, our Porsche LS conversion parts catalog mirrors the hardware we trust on in-house cars.

Comparing platforms? 986 Boxster, 987 Cayman, and 911 964/993 each have different packaging economics; 996/997 typically offers the broadest path to documented systems and fastest project iteration at CPE.

Professional Porsche 996 & 997 LS3 Conversion Services

LS3-focused packages and structured services for water-cooled 911 conversion projects.

996 & 997 LS3 Conversion Packages

Our core in-house program: water-cooled 911 chassis paired with GM LS3 power, documented conversion systems, and professional install. Featured packages start around $40,000; final pricing reflects chassis condition, transmission choice, and options.

Complete Mounting, Cooling & Exhaust Systems

Engine position, radiator and oil cooler strategy, and exhaust integration tailored to 996 and 997 engine bays and your noise or clearance preferences.

Wiring, ECU & Drivability

Harness integration and calibration so your LS 996 or 997 behaves predictably in traffic, on the highway, and on track.

Manual Transmission & Driveline Upgrades

Combine your LS swap with Porsche manual conversion work—Tiptronic to manual, clutch upgrades, and shifter refinement.

DIY Kits & Nationwide Parts

Ship Porsche LS conversion parts anywhere in the U.S.; same components we use in our Baltimore builds.

Post-Conversion Service

Maintain and upgrade your LS 911 through CPE service and repair offerings.

The Process

How We Work

Consultation & Planning

996 or 997 Carrera, 4S, or Turbo chassis—we scope LS3 configuration, transmission, and total project cost.

Engine Selection

LS3-based packages tuned to your power targets and use case—street, track, or both.

Conversion System

Mounts, cooling, harnesses, exhaust, and supporting systems engineered for 996/997.

Professional Installation

Full in-house labor with attention to finish, function, and reliability.

Tuning & Handoff

Calibration support, testing, and delivery with clear next steps for ownership.

Reasons To Choose Chavis Performance & Engineering

When you want a 996 or 997 LS build backed by repeatable systems and honest scope, CPE is structured for exactly that.

Largest concentration of in-house hours on Porsche 996 LS conversion and 997 LS conversion—the platform where our systems are most mature.
Featured LS3 conversion packages with transparent starting pricing and clear explanation of what moves the needle on total project cost.
One engineering team behind in-house builds and DIY Porsche LS conversion kits—no disconnect between what we sell and what we install.
Manual swap and driveline expertise in the same facility as your engine conversion—see manual conversions.
Optional custom aero and appearance work to match the performance step-change from LS power.
Alignment with our full Porsche LS conversion philosophy: reliability, serviceability, and craftsmanship.
Based in Baltimore, Maryland with owners shipping cars or traveling for 996/997 LS projects from across the country.
Ongoing answers via FAQ and direct contact as your project evolves.

Learn more on the home page about what a Porsche LS conversion involves, or jump to About CPE for our story.