Mejiao LS Swap Motor Mount Adapter Plates — Billet Aluminum 2-Pack, Raises Crank 0.17in

Mejiao's LS Swap Motor Mount Adapter Plates are CNC-milled aluminum brackets that let you bolt most LS series engines into vehicles originally equipped with Small Block Chevy mounts.

If you're doing an LS conversion on a classic or restomod that started life with SBC/BBC mounts, these adapter plates provide a precise, durable solution. Machined to OEM-style dimensions and supplied with all necessary fasteners, the kit raises the crank centerline by 0.17 inches and clears the hump on the backside of many small-block mounts for a clean, no-grind installation.

How do these adapter plates make an LS swap fit without major fabrication?

The Mejiao plates are CNC-milled to strict tolerances so they align with factory Small Block Chevy mounting points while accepting LS engine mount positions. That reduces the need for custom brackets, welding, or repeated test-fitting.

• Milled aluminum construction for consistent hole locations and flatness
• Pre-cut center opening to clear the SBC/BBC mount hump
• M10-threaded plates matching supplied flange and flat-head bolts
• Raises crank centerline by 0.17" for proper driveline geometry

Which LS engines and vehicles are compatible with this bracket kit?

This kit is designed to work with a broad range of GM LS-family blocks — including LS1, LS2, LS3, LS6, LQ4, LQ9, L92, L99, L33, and LR4 — when converting from small-block Chevrolet mounting points. Compatibility depends on engine cradle clearance and transmission selection, so verify space and clearance before installation.

• Fits common LS-series blocks listed above
• Meant for vehicles originally using SBC/BBC-style mounts
• Works with many aftermarket and factory LS mounts
• Confirm transmission and crossmember clearances during planning

What hardware and fitment features come with the kit?

The package contains two adapter plates and matching fasteners so you have everything needed to mount both sides. Fasteners include flat-head bolts for a flush exterior and flange M10-1.5 bolts that thread into the M10 plates, reducing parts hunting during installation.

• Includes 2 adapter plates, 8 flat-head bolts, 6 flange M10-1.5 bolts
• Plates feature M10 threads compatible with supplied bolts
• Center milled opening removes need for grinding on many mounts
• 180-day warranty for parts coverage and purchase confidence

How difficult is installation and what should I prepare?

Installation is designed to be straightforward for someone comfortable with engine swaps and basic shop tools. No center-plate grinding is required for many applications, but plan for typical swap tasks like aligning the motor, checking driveline angles, and confirming clearance around accessories.

• Basic hand tools and torque wrench recommended
• Engine hoist or lift required to position the LS engine
• Check for interference with exhaust, steering, and crossmember
• Test-fit and torque bolts to manufacturer specifications

Who is this for: The Mejiao LS Swap Motor Mount Adapter Plates are aimed at DIY mechanics, professional restorers, and performance builders converting SBC/BBC-equipped vehicles to an LS powerplant. If you want precise, CNC-machined brackets that reduce fabrication, come with necessary fasteners, and raise the crank centerline slightly for better alignment, this kit is a practical, shop-friendly solution.