Complete MuscleRods LS Engine Swap Kit for 1977-1990 B-Body Caprice and 1977-1985 Impala
Swapping an LS engine into a classic B-Body often runs into fitment challenges without dedicated mounts. The 1977-1990 B-Body Caprice LS Conversion Kit provides precise motor and transmission brackets for Caprice and Impala frames so you can bolt in the LS with no tunnel modifications. It also preserves the correct drivetrain angle to reduce vibration and supports both 4L60E and 4L80E transmissions without extra adapters. Produced in the USA by MuscleRods, this kit lays the foundation for a reliable LS engine swap.
Precision Engineered Drivetrain Alignment
This LS conversion kit preserves the exact drivetrain angle designed for 1977-1990 Caprice and 1977-1985 Impala frames, a critical factor in reducing vibration and stress on chassis components. By maintaining factory geometry, the kit minimizes unwanted torque steer and chassis twist that can occur when angle is altered, resulting in a smoother and more predictable driving experience. Builders will appreciate how this geometric precision translates to consistent driveline behavior under acceleration or cornering, making long drives more comfortable and reducing wear on universal joints and bushings.
Plug and Play Transmission Integration
Supporting both 4L60E and 4L80E transmissions without modifying the tunnel, this kit streamlines the swap from start to finish. The dedicated crossmember and transmission mount align perfectly with OEM bolt patterns, eliminating cutting or grinding and ensuring bolt-in simplicity. Enthusiasts gain peace of mind knowing that major transmission choices slide into place with factory stance and clearance, while installation time shrinks and the risk of fitment errors drops dramatically.
Adaptive Oil Pan Compatibility for Improved Clearance
Whether you choose a tall-clearance pan or the innovative LH8 design, the conversion kit's frame brackets and mounts accommodate a range of pan depths without interference. This adaptability lets you optimize ground clearance for track or street use, depending on driving conditions and suspension setup. By offering multiple pan options, the kit empowers builders to strike the ideal balance between oil capacity, sump location, and underbody space.
Comprehensive Mounting System for Vibration Control
At the heart of the kit lies a network of motor mounts, frame brackets and a polyurethane transmission mount tuned to isolate noise and harshness. The use of polyurethane over traditional rubber enhances durability and resists oil degradation, while the sturdy crossmember and Z bracket maintain engine position during hard acceleration or hard cornering. Together, these components deliver a secure installation that stands up to daily driving demands and spirited performance runs.
Count on MuscleRods for a secure foundation for your LS swap; for a more robust kit rather than an add on that you can customize with your choice of parts, see our Complete LS Swap Kits - LS Kit Builder.