MuscleRods LS Engine Swap Kit for 1971-1976 Impala B-Body
Fitting a modern LS engine into a 1971-1976 Impala B-Body requires precise mounts and proper chassis clearance, and the 1971-1976 B-Body LS Conversion Kit takes the guesswork out of the equation. MuscleRods engineered this kit to maintain the correct drivetrain angle and work seamlessly with 4L60E and 4L80E transmissions without any modifications to the tunnel. Featuring support for Moroso high clearance or LH8 oil pans, it lets you tailor ground clearance to your driving style while including all the necessary installation hardware for a complete swap.
Precision Engineered Drivetrain Alignment
This conversion kit is designed to maintain the factory drivetrain angle, ensuring the LS engine and transmission share a perfect line with the driveshaft. By holding this geometry, the kit eliminates vibrations and driveline stress that can occur when components are out of square. The precision-machined mounting points and frame brackets work in concert to deliver a stable powertrain setup, translating into smoother acceleration and reduced wear on universal joints.
Seamless Transmission Tunnel Integration
Compatibility with both 4L60E and 4L80E transmissions comes without any tunnel modifications, saving significant installation time and expense. The custom transmission crossmember and polyurethane mount bracket position the gearbox exactly where it needs to be for proper clearance and alignment. Installers simply bolt the supplied hardware to the stock tunnel, making this kit one of the most straightforward solutions for classic Impala owners seeking a modern automatic upgrade.
Flexible Ground Clearance Configuration
Supporting Moroso high-clearance and LH8 oil pans, this kit gives you control over underside clearance without reshaping your frame rails. Whether you opt for the taller Moroso profile to handle rough roads or the low-profile LH8 for street-friendly ride height, the brackets accommodate both options seamlessly. This adaptability not only preserves your oil pan choice but also ensures adequate sump clearance under the stock B-Body chassis.
Complete Hardware Package with US Craftsmanship
Every component-from dual motor mounts and frame brackets to the crossmember hardware pack-is included for a turnkey installation. The use of polyurethane in the transmission mount reduces NVH while maintaining solid support under load. With all parts manufactured in the USA and precision-checked prior to shipping, this kit guarantees reliable fitment and long-term durability for demanding road or track applications.
Count on MuscleRods for precise fit and reliable performance. To access a more robust kit where you can select your own parts to better suit your needs, consider our Complete LS Swap Kits - LS Kit Builder.