Complete MuscleRods LS Engine Swap Kit for 1968-1972 A-Body Chevelle El Camino and Other GM Models
When fitting an LS engine into a 1968 through 1972 A Body Chevelle or El Camino, the 1968-1972 model LS Conversion Kit tackles the alignment and clearance issues that stall these swaps. This complete MuscleRods assembly firmly locates the motor and 4L60E or 4L80E transmission at the original drivetrain angle to reduce vibration and preserve operating tolerances. Installers will appreciate the direct fit to factory chassis mounting points and generous oil pan clearance that accommodates taller sumps without altering the floor pan. It includes brackets and hardware machined for accuracy, guiding installers through a straightforward installation on any GM A Body chassis.
Precision CNC Bracket Design for 1968 through 1972 GM A Body Frames
The motor and frame brackets are CNC machined from heavy gauge steel to match the factory frame rail contact points on 1968 through 1972 Chevelle, El Camino and related GM A Body vehicles. This exacting process yields uniform geometry that allows installers to bolt the engine and transmission assemblies directly without time spent on trial fitting or modification. By aligning each bracket to the original chassis holes, the kit ensures consistent tolerance control that prevents misalignment and eliminates the need for shims. Precision machining also reduces the risk of stress concentration at weld joints, improving long term durability under torque loads. With the included frame brackets, technicians achieve a true plug in installation that respects the original chassis design while accommodating modern LS powerplants. The included installation hardware pack further streamlines the assembly process, meaning shops can complete conversions faster with fewer return visits.
Maintaining Factory Drivetrain Angle to Minimize Vibration
These mounts position the LS engine and 4L60E/4L80E transmission at the same orientation as the original powertrain, preserving the design geometry that keeps universal joint angles within manufacturer specifications. Maintaining the correct angle reduces vibration across the entire rpm range, resulting in a quieter driving experience and longer service life for drive shaft components. This precise alignment also limits rotational stress on the transmission output and pinion bearings, preventing premature fatigue under heavy load conditions. With the driveline held true to its intended path, throttle response remains sharp and torque transfer stays efficient under all driving scenarios. The result is a refined feel at the pedal and confidence that mechanical wear will remain within original design tolerances. This alignment strategy reduces drivetrain noise under load and lets drivers focus on power delivery rather than mechanical vibration.
Crossmember and Clearance Solutions for Oil Pan and Transmission
The transmission crossmember and outer brackets are laser cut and formed to fit the contours of the A Body floor pan, eliminating the need for cutting or reshaping the chassis tunnel. Generous clearance under the oil pan accommodates aftermarket sumps with increased capacity and improved thermal management, allowing builders to select the best pan for cooling without worrying about interference. This space has been engineered to prevent contact during full suspension travel, even when using tall inlet manifolds or deep sump designs. The integrated polyurethane mount and spacer kit isolates drivetrain noise and dampens vibrations, enhancing cabin comfort without sacrificing rigidity. Installers benefit from a straightforward fit that retains full range suspension articulation while securing the transmission firmly in place.
Durable Steel Construction with Protective Powder Coat
Every bracket and crossmember in this swap kit is formed from heavy gauge steel for exceptional strength under repeated stress cycles and street or track use. Seams are joined with TIG welding, producing uniform, high integrity weld beads that resist cracking under torque loads. After fabrication, each component receives a high quality powder coat finish that seals out moisture, road salt and other corrosive elements. This protective layer not only extends the service life of the mounts but also preserves the precise machining tolerances achieved during production. American assembly ensures that each piece meets strict quality standards before leaving the factory. The result is a hard wearing mounting solution that delivers reliable performance in demanding engine swap applications.
Count on MuscleRods for precise fit and durable support. For a customizable version of this kit where you can select components to suit your needs see our Complete LS Swap Kits - LS Kit Builder.