Swapping a small block Chevy (SBC) engine to an LS family powerplant is a popular upgrade for increased reliability, power, and efficiency. This guide highlights practical motor mount adapters and coolant sensor solutions designed to simplify the conversion. Each product below offers different mounting options, alignment adjustments, and compatibility with common SBC-to-LS swap setups. Read on to compare features, fitment details, and installation considerations to help you choose the right kit for your project.
| Product | Key Benefit | Compatibility |
|---|---|---|
| For LS Swap Motor Mounts Adapter Plates (Universal) | Adjustable, billet aluminum plates for LS1/LS3/etc. | SBC to LS; various LS models |
| LS Swap Motor Mounts for 1973-1998 Square Body | Slotted, adjustable mounting; supports multiple transmissions | 1973–1998 OBS/Square Body trucks |
| ICT Billet SBC to LS Engine Adapter Plate | OEM-spec fitment; moves crank centerline +0.17 in | LS engine swaps |
| LS Swap Motor Mounts Adapter Plates (Universal) | Wide compatibility; adjustable in 4 positions | SBC to LS (LS1/LS2/LS3/LS6/LQ4/LQ9/L92/L99/L33/LR4) |
| ICT Billet SBC to LS Swap Coolant Temp Sensor Adapter | 1/2″ NPT sensor adapter; USA-made billet aluminum | SB/BB to LS coolant sensors |
Note: The products featured here are listed by relevance to SBC-to-LS swap applications, focusing on mounting, alignment, and sensor adaptation essentials for a clean, reliable conversion.
For LS Swap Motor Mounts Adapter Plates – Universal
These brackets enable a LS series engine to be bolted into a vehicle originally equipped with a small block Chevy (SBC) engine using existing mounts. The design is aligned with OEM specifications to optimize fitment, shifting the crankshaft centerline up by approximately 0.17 inches within the vehicle. The package includes 2 adapter plates, 8 flat head bolts, and 6 flange M10-1.5 bolts (plates are M10 threaded). Ideal for straightforward SBC-to-LS swaps where mounting alignment and centerline positioning matter for clearance and drivetrain geometry.
LS Swap Mounts for 1973-1998 Square Body Trucks
These LS engine swap mounts feature a slotted design for adjustable engine placement within the engine bay. They support a range of transmission options, including 4L60E, 4L65E, TH350, TH400, TH700R4, and 4L80, making them compatible with multiple SBC-to-LS swap configurations. Suitable for ALL Chevrolet LS series engines (LS1, LS2, LS3, LS6, LS7, LS9, and various truck engines). The mounts are designed for 1973–1998 OBS and Square Body Chevy/GMC 2WD/4WD pickups and related full-size trucks, ensuring versatile fitment across classic C/K platforms.
ICT Billet SBC to LS Engine Adapter Plate
Made in Wichita, Kansas from aerospace-grade USA-produced billet aluminum, these adapter plates are engineered to move the crankshaft centerline up by approximately 0.17 inches, matching the OEM fitment standards for LS engine swaps. The product is designed to integrate with a broad range of LS configurations, offering precise alignment and robust construction tailored for high-demand swap projects.
LS Swap Motor Mounts Adapter Plates – Universal
This universal kit is designed for a broad SBC-to-LS swap application, including LS1, LS2, LS3, LS6, LQ4, LQ9, L92, L99, L33, and LR4. It enables bolting early Chevy three-bolt motor mounts to late-model LS blocks with four-bolt patterns. The kit emphasizes a flush, no-grind installation and features an adjustable design with four positions to accommodate headers, oil pans, and steering boxes—maximizing flexibility for custom builds.
ICT Billet SBC to LS Swap Coolant Temperature Sensor Adapter
This coolant temperature sensor adapter allows SBC/BBC 1/2″ NPT sensors to fit LS series engines. It is designed to fit all GM LS series engines and is manufactured in Wichita, Kansas from aerospace-grade USA-produced billet aluminum, ensuring reliable sealing and compatibility for temperature sensing across LS builds.
Buying Guide: Key Considerations For SBC To LS Swaps
- Engine alignment and centerline: Look for adapters that move the crankshaft centerline by a small, documented amount to ensure proper drivetrain geometry and clearance for headers and oil pans.
- Mount compatibility: Verify that the mounts support your target LS model and the transmission type you plan to use. Slotted and adjustable designs provide flexible fitment for various SBC and LS configurations.
- Material and build quality: Billet aluminum offers strength and accurate tolerances essential for performance swaps; consider USA-made units for consistent quality and sourcing.
- Sensor and cooling integration: If swapping sensors or adapting to LS coolant systems, ensure sensor adapters and related fittings are compatible with your engine family and 1/2″ NPT requirements.
- Installation complexity: Some kits include complete hardware and straightforward mounting, while others may require additional brackets or modifications. Assess your mechanical skills and tool availability.
- Transmission compatibility: Ensure mounts and brackets accommodate the transmission you intend to run (e.g., 4L60E, TH400, etc.), as misalignment can affect shifter geometry and driveline angles.
- Clearance and exhaust considerations: Check header and steering box clearance, and plan for any header repositioning or oil pan adjustments when selecting an adapter with adjustable positions.
- Finish and corrosion resistance: Choose finishes that resist road grime and salt exposure if you drive in similar conditions, helping longevity of mounts and adapters.
- Warranty and support: Prefer reputable brands that offer installation guidance, technical support, and clear return policies for swap components.
Overall, selecting the right SBC-to-LS swap hardware involves balancing fitment accuracy, adaptability to multiple LS models, and the ease of installation. The products above provide a range of options from universal adapters to model-specific mounts, along with sensor and coolant fittings, to support a robust conversion process.