MuscleRods LS Swap Kit for 1963-1972 Chevy C/K-10 GMC C/K-15 Blazer K5 and Jimmy
Tackling tight engine bay clearances and driveline angle issues the 1963 to 1972 GM Truck LS Conversion Kit positions an LS motor with pinpoint accuracy in the original half ton frame rails. Using CNC machined motor mounts this kit locks the block at the exact angle needed to provide a drivetrain alignment solution that reduces vibration. Custom crossmember and side brackets slip into factory holes without cutting or grinding preserving chassis strength and tunnel integrity. Coverage spans T56 4L60E 4L80E and 6L80E transmissions while offering raised sump and LH8 oil pan compatibility across Chevy half ton models from 1963 to 1972.
Versatile Transmission Adaptation for Modern GM Gearboxes
The GM truck LS conversion kit is engineered to accept a broad spectrum of manual and automatic transmissions without major modifications to the stock tunnel. Installers can bolt in 4L60E and 4L80E transmissions using factory frame rail holes, eliminating the need for custom templates or cutting near the driveshaft. For higher capacity units such as the T56 or 6L80E, the crossmember geometry minimizes tunnel intrusion while still maintaining correct bellhousing alignment. This versatility allows builders to select the transmission best suited to their torque requirements and driving style without the typical fabrication challenges. By providing a consistent mounting reference, the kit simplifies the swap process and shortens project timelines.
All American Steel Bracket Assembly Preserves Chassis Integrity
Each frame bracket and crossmember component is fabricated from domestic steel stock that meets stringent yield strength requirements for chassis applications. The formed side brackets slip into the original rail openings on 1963 to 1972 half ton frames without grinding, welding or trial fitting, preserving the factory rail geometry and torsional stiffness. Precision hole locations ensure that bolt patterns align perfectly with OE mounting points, allowing for confident torque settings. This approach maintains the structural integrity of the tunnel and supports the elevated loads produced by an LS powerplant under acceleration or towing. Builders benefit from a direct fit solution that keeps the chassis in its as designed state while adding modern power under classic rails.
Integrated Mounting Hardware for Dependable Vibration Control
This comprehensive kit includes CNC machined motor mounts, a polyurethane transmission mount and a complete bolt kit with grade specific fasteners. The hard poly mount cushions shock loads from gear changes and road irregularities before they reach the driveshaft, while the motor mounts hold the engine block at the precise angle for optimal universal joint operation. Grade eight bolts and locknuts resist loosening under repeated cycles, helping to retain correct alignment over time. Together these elements reduce cabin shake and drivetrain knock so that engine noise and vibration stay contained. With all parts sourced from reliable suppliers, customers avoid last minute part hunts and maintain momentum on their build.
Count on MuscleRods for precise fit and lasting performance. For a more robust kit that lets you select each component to suit your needs see our Complete LS Swap Kits - LS Kit Builder.