Complete MuscleRods LS Swap Kit for 1958-1964 Chevy Impala B-Body
Tackling an LS engine installation in a classic 1958-1964 Chevy Impala B Body often comes down to aligning the powertrain crossmember without restructuring the floorpan, which this LS Conversion Kit addresses head on. It secures the LS block and chosen gearbox at factory angles on the original frame rails, delivering a precise fit that cuts vibration on universal joints under load. Mounting brackets cut to match common midsize GM oil pan contours ensure hood clearance and accessible sensor ports while accommodating T56, 4L60E and 4L80E transmissions with minimal mockup time. MuscleRods engineered this engine swap kit in the USA for reliable installation and consistent performance through daily driving.
Precision Engine and Transmission Alignment
The kit holds the LS engine and chosen transmission at the exact angle specified by the factory powertrain geometry. CNC laser cut brackets and precision spacer blocks eliminate guesswork, aligning driveline components within tight tolerances. This exact fit reduces torsional vibration and uneven loading on universal joints, which in turn helps extend the life of bearings. Installers benefit from smoother throttle response under acceleration and reduced noise at cruising speeds. Every mounting component is proudly made in the USA to deliver consistent quality from one build to the next.
Direct Frame Rail Mounting without Tunnel Modification
Brackets are laser cut from heavy gauge steel to bolt straight to the original frame rails of 1958 to 1964 Impala chassis without altering the transmission tunnel or floor structure. This direct mount approach preserves factory sheet metal integrity and interior space, avoiding time-consuming cutting and reinforcement. Grade eight fasteners and integrated reinforcement plates ensure a secure attachment that stands up to engine torque and road conditions. Built-in alignment slots guide fastener placement so installers spend less time on trial fits and more on routing wiring and plumbing.
Engine Sump Clearance Matched to F Body Profile
By replicating the contour of common F Body oil pan designs, the kit ensures proper sump clearance under the stock hood line on Impala projects. Each bracket is cut to the exact pan profile, preserving room for sensor ports and coolant lines without extra trimming or rework. This targeted fitment streamlines the assembly process by letting builders focus on electrical connections and cooling system layout. The end result is a neat under hood presentation that retains the classic silhouette of the original chassis.
Versatile Support for T56, 4L60E and 4L80E Gearboxes
Compatibility with T56, 4L60E and 4L80E transmissions makes this kit a flexible solution for a range of performance goals. The crossmember accepts standard LS bell housing bolt patterns so in most cases no adapter plates are required. When gearing needs change, builders simply swap the hardware pack and reuse the same mounting points for a fast transmission swap. This adaptability accelerates project timelines and allows easy upgrades as power levels evolve.
Count on MuscleRods precision for your LS conversion and for a more robust kit where you can customize parts to suit your needs see our Complete LS Swap Kits - LS Kit Builder.