Complete MuscleRods LS Engine Swap Kit for 1973-1987 C-10/C-15 and 1973-1991 2WD Blazer/Jimmy
When dropping an LS V8 into a 1973-1987 GM C-Series truck or a 1973-1991 2WD Blazer/Jimmy, the 1973-1987 2WD GM Truck LS Conversion Kit solves the alignment and fitment hurdles that often slow down a swap. The MuscleRods kit uses laser cut steel brackets to lock the crank centerline at the original frame angle without welding or tunnel modifications while preserving driveline geometry and reducing vibration. It fits T56, 4L60E and 4L80E transmissions and secures gearboxes at the correct height to safeguard driveshaft alignment. Installers will bolt the crossmember and side mounts to existing frame openings and clear oil pans up to four inches deep for improved ground clearance. Grade eight hardware bolts to frame openings, cutting custom fabrication and saving shop time.
Precision Laser Cut Frame Bracket Alignment
The conversion kit uses CNC laser cut steel brackets to lock the LS crank centerline at the factory frame angle without any welding or modifications. By preserving driveline alignment at the stock inclination, these brackets minimize vibration and reduce stress on universal joints under torque. Installers simply bolt the frame plates to existing openings using grade eight hardware, eliminating time consuming filler plates and fabrication. The result is smooth power delivery across varying loads and a secure engine position that supports cornering stability.
Integrated Transmission Support for T56 4L60E and 4L80E Gearboxes
A dedicated crossmember and side mount system fits T56, 4L60E and 4L80E transmissions without altering the factory tunnel, preserving frame stiffness and floor pan contours. The engineered bracket geometry maintains each gearbox at the correct height and angle to safeguard driveshaft alignment and prevent binding under heavy load. Pre machined holes match stock bolt patterns for a straightforward bolt on fit, and the supplied hardware pack is calibrated to deliver consistent clamp load at each attachment point. Technicians benefit from a seamless process that reduces shop hours and yields a precise fit that endures rough road conditions.
Enhanced Oil Pan Clearance with Forward Engine Placement
Bracket placement shifts the engine forward and upward to clear oil pans up to four inches tall, providing increased underbody clearance for off road or lowered chassis setups. This arrangement ensures that the factory pickup remains submerged during hard cornering or steep inclines, preventing oil starvation when lateral forces act on the sump. Builders can install aftermarket deep sump or retro style pans without risk of interference with the frame rails, allowing more options for custom engine builds. Consistent oil supply under dynamic conditions helps maintain optimal lubrication and engine longevity.
Durable Polyurethane Isolators and Hardware Package
Replacing standard rubber mounts, polyurethane isolators resist heat, oil and chemical exposure while controlling engine movement within a defined range. Reinforced steel brackets include gusset plates at high stress zones to prevent deformation during repeated torque cycles, ensuring stable alignment between the engine and transmission. The kit includes grade eight bolts and lock washers to secure mounts firmly to the chassis, reducing the risk of loosening over time. Together these components dampen noise and vibration more effectively than soft mounts, protecting adjacent drivetrain parts and preserving cabin comfort.
Count on MuscleRods for engineered precision in every swap. For a more robust customizable kit that lets you select your own parts to better suit your needs see our Complete LS Swap Kits - LS Kit Builder.