MuscleRods LS Engine Swap Kit for 1982-2005 S10 Blazer 2WD and S15 Jimmy 2WD
For builders tackling an LS engine drop into an early S Series Blazer or Jimmy, this conversion kit ensures precise block to frame alignment at the factory driveline angle. Precisely machined motor and frame brackets locate the block while the heavy duty crossmember accepts T56 4L60E or 4L80E transmissions without modifying the floor or tunnel. Designed to clear the LH8 oil pan and preserve brake booster and firewall positions, it also integrates Corvette balancer and water pump components in tight engine bays. Made in the USA by MuscleRods this kit offers a direct fit swap for models from 1982 through 2005 and delivers reliable long term performance.
CNC Machined Brackets Ensure Precise LS Engine Positioning
The kit's motor and frame brackets are CNC machined from US steel plate to position the LS block at the original driveline angle inside the S-Series chassis. High tolerance machining reduces torsional stress on both crankshaft and transmission input shaft, promoting smoother power delivery and minimal vibration under load. Each bracket indexes to factory frame holes, eliminating the need for custom fitting and ensuring repeatable alignment across builds. Designed to clear the LH8 oil pan and accept Corvette balancer and water pump components with short accessory drive arms, this bracket set maintains correct pulley orientation for reliable belt tracking and fluid circulation.
Crossmember Adapts to T56, 4L60E and 4L80E Transmissions
The heavy duty transmission crossmember bolts directly to the existing frame rails and crossmember brackets without altering the floor pan or tunnel profile. Reinforced steel saddles provide a rigid mounting surface for T56, 4L60E and 4L80E gearboxes, standing up to high torque loads without flex or fatigue. For less common transmission cases, minor seam flattening clears pinch welds, but major modifications remain unnecessary. This design preserves interior panels and carpet while cutting installation time by avoiding custom mounts or floor cutting.
Polyurethane Transmission Mount for Drivetrain Stability
Replacing the stock rubber isolator, the included polyurethane transmission mount and spacers resist deformation caused by heat, high fluid exposure and driveline torque. The firmer compound limits driveline lash, yielding crisper shifts and more direct throttle response under acceleration. By curbing vibration transfer into the cab, driver comfort and perceived quality improve during both daily driving and spirited runs. All necessary hardware is supplied in a single pack to streamline assembly and maintain consistent driveline angle from engine to transmission.
Count on MuscleRods for precise fit and reliable performance. To explore a more robust kit where you can build this same kit but this is a customizable kit where the user can select their own parts to better suit their needs please see our Complete LS Swap Kits - LS Kit Builder.