ATP Performance
    Engine

    Modern Power, Classic Soul

    Engine Swap

    LS, LT, and Duramax — engineered to bolt in cleanly and deliver serious, reliable power.

    Power Done Right

    An engine swap isn't just dropping a motor in and calling it done. It's a full integration — engine, transmission, fuel system, cooling, exhaust, wiring, and ECU all need to work together. We do it right.

    We focus on GM LS, LT, and Duramax diesel swaps for classic trucks and SUVs. We use proven parts — Holley or FiTech fuel systems, 4L80E/6L80E/10L80E transmissions, custom headers, and standalone ECU harnesses.

    Want 400 reliable horsepower? Or 700+ with a blower? Need a diesel for towing? We'll spec the right setup for what you actually want to do with the truck.

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    Power Done Right

    LS Swaps

    GM's legendary small block — 400–700+ HP, fuel-injected, and endlessly supported.

    LT Swaps

    GM's next-gen direct-injected V8 platform — more efficient, more power, cutting-edge tech.

    Duramax Diesel

    GM's proven diesel platform — massive torque, durability, and towing capability.

    Complete Wiring

    Standalone harnesses with modern ECU, gauges, A/C, and accessory integration.

    How It Works

    Our Process

    01

    Powertrain Planning

    We discuss your power goals, budget, and intended use. Then we spec the engine, transmission, rear end, and supporting systems.

    02

    Motor Mounts & Crossmember

    Custom or bolt-in motor mounts and transmission crossmembers are fabricated and installed to position the drivetrain properly.

    03

    Fuel & Cooling Systems

    A return-style fuel system with EFI pump, lines, and regulator is installed along with an upgraded radiator and electric fans.

    04

    Exhaust Fabrication

    Custom headers and a full exhaust system are fabricated in-house and routed for ground clearance and optimal flow.

    05

    Wiring & ECU

    A standalone engine harness is wired with a modern ECU, integrating gauges, A/C compressor, alternator, and accessories.

    06

    Tuning & Testing

    The engine is started, broken in, and tuned on our equipment. Road testing validates drivability, cooling, and overall performance.

    Our Work

    Gallery

    Detailed engine bay with clean wiring

    Common Questions

    FAQ

    Can't find the answer you're looking for? Reach out to our team.

    Contact Us

    Ready to Build?

    Let's Get Started

    Every great build starts with a conversation. Tell us about your project and we'll put together a plan to make it happen.