Complete MuscleRods LS Engine Swap Kit for 1964-1967 A-Body Chevelle, El Camino, GTO/Tempest, Cutlass/442, Skylark
For builders installing an LS V8 into a classic A Body chassis the 1964-1967 A Body LS Conversion Kit by MuscleRods tackles alignment and fitment challenges head on. It uses precision laser cut steel brackets that match the contour of Chevelle El Camino GTO Tempest Cutlass 442 and Skylark frame rails and pairs them with durable polyurethane bushings to control vibration and maintain correct crank to driveshaft angle. Installers gain generous clearance for performance oil pans and enjoy plug in compatibility with 4L60E and 4L80E transmissions without any tunnel trimming. This kit preserves frame integrity while streamlining the LS swap process so that Chevelle El Camino and Skylark projects spend less time in mock up and more time on final assembly.
Precision Alignment with Laser Cut Mounting Brackets
The engine mounting brackets are produced by CNC laser cutting from heavy gauge steel plate to match the exact contour of the 1964 through 1967 A Body frame rails. This manufacturing method delivers tight dimensional tolerances so that the LS block settles at the GM recommended angle without requiring any trial fitting or metal trimming. By preserving the original drivetrain geometry the kit ensures smooth torque transfer through the drive shaft and universal joints while reducing stress concentrations on the chassis. Installers can expect a significant reduction in mock up time and improved repeatability from one vehicle to the next. This precise fit also contributes to even load distribution during acceleration and deceleration which promotes consistent performance and chassis longevity.
Cold Rolled Steel Brackets with Polyurethane Vibration Control
Bracket components are formed from quarter inch cold rolled steel known for its uniform thickness and superior yield strength when compared to stamped alternatives. A protective finish guards against corrosion in both humid and salted road environments which helps preserve appearance and structural integrity. Bonded polyurethane bushings cushion engine movement and absorb torque impulses without deforming under high heat or oil exposure, keeping vibration levels in check. Grade eight hardware secures the assembly with exceptional clamping force that resists loosening over time. Together these materials and components create a durable mounting solution that maintains alignment under sustained engine load.
Integrated Transmission Crossmember for 4L60E and 4L80E Installations
The one piece transmission crossmember and matching outer brackets bolt directly to existing frame locations on the A Body chassis without any modifications to the transmission tunnel. Installers can select from included spacers to fine tune crossmember height and angle, achieving precise yoke alignment between the transmission output and drive shaft. Correct alignment minimizes vibration, noise, and universal joint wear while extending the service life of rotating drivetrain components. The crossmember design accommodates both the 4L60E and 4L80E automatics in a plug in fashion that streamlines the installation process. Detailed step by step instructions guide builders through each torque sequence, making the kit suitable for both professional shops and weekend enthusiasts.
Generous Underbody Clearance for Oil Pan and Accessory Components
This conversion kit provides ample space between the crossmember and frame rails to accommodate deep sump, high capacity and aftermarket oil pans without interference. Intake manifold runners and oil filter locations remain accessible for routine maintenance or future upgrades, eliminating the need for custom fabrications. The open profile of the crossmember also allows clearance for popular bolt on exhaust headers and skid plate protection, preserving ground clearance for lowered suspension setups. By planning these clearances into the design, builders can focus on assembly rather than on ground scraping or pan modifications. The result is a tidy engine bay that blends classic styling with modern powertrain components.
Count on MuscleRods for a precise fit and lasting performance. For a more robust customizable kit that lets you select each component to suit your needs see our Complete LS Swap Kits - LS Kit Builder.