MuscleRods LS Engine Swap Kit for 1973-1987 GM C/K-10/15 and 1973-1991 Blazer K5/Jimmy
When fitting a modern LS engine into a 1973-1987 GM C/K chassis, achieving correct positioning can slow any restoration project. This Engine Swap Kit from MuscleRods combines robust engine and frame mounts with a dedicated transmission crossmember to deliver precise drivetrain alignment. It supports direct installation of T56, 4L60E and 4L80E transmissions without altering the tunnel structure. Tailored for 2WD C/K 10 and C/K 15 pickups as well as Blazer K5 and GMC Jimmy models, it also accommodates deep sump oil pans to preserve ground clearance on uneven terrain.
Preserving Drivetrain Geometry in LS Conversions
Mount geometry preserves the original drivetrain angle to minimize vibration after installation. When swapping a modern LS engine into a classic C/K or K5 frame, even small misalignments can lead to driveline imbalance and premature wear. These engine and frame mount brackets are engineered to position the crank centerline at the factory angle, maintaining smooth power delivery and long component life. This alignment not only enhances ride comfort but also reduces stress on universal joints and transmission bearings.
Transmission Crossmember Design for Direct Fitment
The kit's crossmember and outer brackets support T56, 4L60E and 4L80E transmissions without modifying the tunnel. This custom crossmember bolts directly to the frame rails, eliminating the need to reshape sheet metal or relocate the tunnel structure. By retaining the factory floor layout, installation time is reduced and structural integrity remains intact. Integrated mounting points ensure consistent transmission alignment under load, preserving drivetrain efficiency and reducing noise.
Accommodating Deep Sump Oil Pans and Ground Clearance
Designed for easy integration of high volume oil pans, this kit clears deep sump designs while preserving off road ground clearance. The engine mounts position the block forward and higher where necessary, creating space for oil pans up to four inches deep. This configuration ensures reliable oil pickup under hard cornering or uneven terrain conditions. Enthusiasts can choose from Moroso or retro style cast aluminum pans to suit both performance and vintage appearance.
Durable American Made Mounts and Hardware
All engine mounts, frame brackets and hardware are produced in the United States from premium steel and polyurethane, ensuring robust support and resistance to oil and heat. The use of poly in the transmission mount reduces deflection compared with rubber, maintaining precise positioning under torque. Outer crossmember brackets feature reinforced gussets to withstand repeated load cycles while the hardware pack contains all fasteners needed for a complete installation. This comprehensive kit delivers consistency and reliability for both professional builders and home mechanics.
Trust MuscleRods for precise alignment and reliable support. For a more robust kit rather than an add on where you can select parts to suit your needs see our Complete LS Swap Kits - LS Kit Builder.