10 Best Racing Engine Mounts For LS Swap In 2026: Adjustable Fit, Stronger Support, And Easier Installation

Choosing the right mounts can make or break an LS swap. The best option should match your chassis, support the engine securely, and give you enough adjustability to dial in fitment.

Below, we’ve organized 10 racing engine mounts for LS swap projects that cover popular trucks, G-body cars, and universal builds, so you can compare options faster and buy with confidence.

Best 10 Racing Engine Mounts for Ls Swap Picks for 2026

Adjustable Truck Swap Fit – LS Swap Mounts for OBS/Square Body Chevy GMC

If you’re looking for racing engine mounts for ls swap work in a 1973-1998 OBS or Square Body truck, this adjustable mount set is built to help with fitment and transmission clearance. The slotted design lets you fine-tune engine placement, while the steel construction aims to keep the installation stable.

Best For: Chevy and GMC C/K truck owners doing an LS swap in a 2WD or 4WD OBS or Square Body chassis.

Pros:

• Slotted adjustment helps position the engine in the bay
• Works with a wide range of LS and Vortec truck engines
• Supports common manual and automatic transmissions
• High-carbon cold rolled steel construction for stability

Cons:

• Fitment is limited to specified OBS and Square Body truck applications
• Product notes do not mention included hardware

For a truck-focused swap, this kit is practical if you want adjustability without overcomplicating the install. The main strength here is broad LS compatibility paired with chassis-specific fitment for classic Chevy/GMC platforms.

G-Body Clearance Tuner – maXpeedingrods LS Swap Mounts for 1978-1988 G-Body

For racing engine mounts for ls swap projects in a G-body car, this adapter kit focuses on adjustable positioning and clearance. It is designed for 1978-1988 Monte Carlo and similar GM G-body applications, with slotted plates that let you move the engine slightly forward or rearward to help dial in fit.

Best For: G-body LS conversion builders who want adjustable engine placement and included installation hardware.

Pros:

• Adjustable slots help solve clearance and fitment issues
• Can move engine up to 1/2 inch forward or 1 inch rearward
• High-strength steel plates are laser cut for precision
• Polyurethane bushing is designed to reduce vibration and wear

Cons:

• Application is limited to specified 1978-1988 G-body vehicles
• Not a universal kit for every LS swap platform

This kit is a good fit when you need a more tailored LS swap solution for a G-body chassis. The included hardware and adjustment range make it especially useful for builders working around space constraints.

Universal Custom Builder – maXpeedingrods Universal LS Swap Mounts

If your racing engine mounts for ls swap project is a custom build rather than a vehicle-specific kit, this universal set is aimed at hot rods, street rods, rock crawlers, and dune buggies. The cut-to-fit adapter plates and steel construction make it a flexible option for custom frame applications where you need to build around your chassis.

Best For: Custom LS swap projects that need a universal, adjustable mount solution.

Pros:

• Universal cut-to-fit design suits many custom applications
• Premium steel with black coating for corrosion resistance
• Designed to reduce engine movement and vibration
• Includes mounts, adapter plates, gaskets, and screws

Cons:

• Requires custom fitting rather than direct vehicle-specific installation
• Not intended for buyers wanting a one-model exact fit kit

This is the most flexible option in the group if your build doesn’t follow a factory template. It makes sense for fabricators who want a sturdy universal base and don’t mind trimming and adapting as part of the install.

Truck Swap Adjustable Kit – ECOTRIC LS Conversion Engine Mount for C1500/K5

For racing engine mounts for ls swap installations in 1988-1999 GM 1500 pickups and related 2WD trucks, this ECOTRIC kit offers an adjustable, steel-based solution. The slotted design helps with engine placement, and the notes call out compatibility with LS truck oil pans for this type of swap.

Best For: Builders swapping LS engines into 1988-1999 GM 1500, Tahoe, Yukon, or Suburban 2WD platforms.

Pros:

• Adjustable slots allow engine position tuning
• 1/4-inch laser-cut steel adapter plates
• Compatible with several LS engine families and truck applications
• Includes mounting hardware as shown

Cons:

• Low-mount A/C will interfere with the frame crossmember
• Instruction manual is not included
• Unpainted raw steel finish may need extra attention

This is a solid choice if you want a truck-specific LS swap mount with adjustability built in. Just plan ahead for the known A/C clearance note and expect a more hands-on installation.

Universal Adjustable Mount Kit – Universal Adjustable LS Swap Mounts

If you need racing engine mounts for ls swap projects that can be cut, welded, and adjusted to fit a custom chassis, this universal conversion kit is built for that kind of work. It bolts to the side of the LS block and offers 2 inches of adjustment, making it a flexible choice for street rods, rock crawlers, dune buggies, and other custom frame vehicles.

Best For: Builders who want a universal LS swap mount kit with adjustment and weld-in flexibility for custom chassis work.

Pros:

• 2 inches of adjustment to slide the engine forward or reverse
• Includes 5.5 inches of usable tab length for cutting and welding
• Wide application for hot rods, street rods, rock crawlers, and dune buggies
• Comes with mounts, adapter plates, nuts, gaskets, and screws

Cons:

• Requires cutting and welding to fit the chassis
• Designed for custom builds rather than direct bolt-in fitment

Overall, this is the most adaptable option in the group for fabricators who want room to position the engine and finish the mounts to match their own build. If your LS swap is going into a one-off or modified frame, the adjustment range and included hardware make it easy to work with.

Direct-Fit GM Body Kit – Direct-Fit LS Swap Mount Kit for GM 1978-1988

For racing engine mounts for ls swap installs in GM bodies from 1978 to 1988, this adjustable conversion kit is aimed at a more direct replacement style setup. The listing calls out no drilling and no cutting, which makes it a practical pick when you want to keep installation straightforward on the supported chassis range.

Best For: GM body swaps from 1978-1988 where a direct-replacement style LS mount kit is preferred.

Pros:

• Fits GM bodies from 1978 through 1988
• Supports LS1, LS2, LS3, LS6, LSX, LQ4, and LQ9 engines
• No drilling and no cutting required per the notes
• Includes 42 accessories for the swap

Cons:

• Limited to the specified GM body range
• Not intended as a universal cut-to-fit solution

This kit makes sense if your project falls squarely inside the supported GM chassis range and you want to avoid fabrication work. The included hardware count and direct-install approach make it appealing for builders who value convenience over universal adjustability.

Heavy-Duty Universal Set – Heavy-Duty Universal LS Swap Mounts

If you want racing engine mounts for ls swap applications with a heavy-duty, universal design, this conversion mount set is a straightforward option for LS-series engines. It is made of alloy steel, is powder coated, and is described as easy to bolt on, with professional installation recommended for a clean result in older cars or trucks.

Best For: Universal LS-series swaps into older cars or trucks where a strong bolt-on mount set is needed.

Pros:

• Compatible with Chevrolet LS1, LS2, LS3, LS6, and LS7
• Made from heavy-duty alloy steel with a powder-coated finish
• Designed for swapping newer LS engines into older vehicles
• Includes two conversion motor mounts and adapter hardware

Cons:

• Professional installation is recommended
• Universal fit may require more planning than chassis-specific kits

As a universal LS conversion mount, this set focuses on strength and simplicity rather than chassis-specific convenience. It is a solid fit for builders who want a durable bolt-on starting point for an older vehicle swap and are comfortable handling the rest of the installation details.

Direct SBC-to-LS Adapter – Adjustable Billet Adapter Plates

If you’re comparing racing engine mounts for ls swap projects, this adapter-plate kit is built for vehicles that originally used small block Chevy mounts. It’s designed to bolt an LS series engine into that setup with no grinding needed, while the CNC-milled aluminum construction aims for accurate fitment and durability.

Best For: SBC vehicles that need a straightforward LS engine conversion using existing mounts.

Pros:

• Works with LS1, LS2, LS3, LQ4, LQ9, LS6, L92, LS9, L33, and LR4 applications listed in the notes
• No grinding necessary for a flush fit
• CNC milled from aluminum for accuracy
• Includes 2 adapter plates plus mounting hardware

Cons:

• Intended for SBC-style mounting setups, not a universal fit for every chassis
• Moves the crankshaft centerline up .17 inches

This is a practical swap option if your build matches the SBC-to-LS conversion path and you want the included hardware to simplify installation. The flush-fit design and milled aluminum construction are the main strengths here.

OEM-Spec Swap Kit – Universal Billet Conversion Kit

When shopping for racing engine mounts for ls swap builds, this kit stands out for its OEM-spec fitment approach and included hardware. It’s made to let an LS engine bolt into a vehicle that originally had a small block Chevy, with no grinding required and a .17-inch crankshaft centerline lift noted in the product details.

Best For: Builders who want a CNC-milled adapter kit with a complete hardware package.

Pros:

• OEM-spec design for improved fitment
• No grinding needed for a flush fit
• CNC milled aluminum construction
• Includes 2 plates, 8 flat head bolts, and 6 flange M10-1.5 bolts

Cons:

• Built around SBC-to-LS conversions rather than broader swap use
• Raises the crankshaft centerline by .17 inches

This kit is a solid pick if you want a clean bolt-in solution and prefer having the installation hardware in the box. The 180-day warranty also adds a little extra confidence for a swap part.

Flexible Clearance Mounts – 4-Position LS Swap Mounts

For racing engine mounts for ls swap projects that need more flexibility, this billet aluminum set offers four adjustable positions to help work around headers, oil pans, and steering boxes. It’s made for LS engine installation into many 1958-72 GM cars and 2WD trucks, with specific compatibility notes for Camaro, Nova, Chevelle, and Impala among others.

Best For: Classic GM swaps that need multiple positioning options for clearance.

Pros:

• Four adjustable positions for fitment flexibility
• Designed for 1997-2013 Gen III/IV LS engines in many 1958-72 GM vehicles and 2WD trucks
• Billet aluminum construction for strength and corrosion resistance
• Includes 2 adapter plates, 8 flat head bolts, and 6 flange bolts

Cons:

• Not compatible with 1967-72 4X4 Chevrolet GMC trucks
• Still specific to SBC-style vehicle conversions

The adjustable positions make this one especially useful when a swap has to clear real-world chassis parts rather than just bolt in. If your build matches the listed GM applications, it offers a flexible, durable mounting solution.

How We Picked the Best Racing Engine Mounts for Ls Swap

We focused on fitment range, adjustability, included hardware, material quality, and how well each mount type suits real swap scenarios. For Racing Engine Mounts for Ls Swap, the most useful choices are the ones that reduce mock-up time while still giving a stable, repeatable engine position.

We also prioritized mounts that cover common LS family engines and popular chassis applications, since that makes it easier to narrow your shortlist before installation begins.

Quick Comparison

In this group, some mounts are vehicle-specific for better alignment, while others are universal and better for custom fabrication. Vehicle-specific kits usually simplify installation. Universal kits usually offer more flexibility if your build is custom, lifted, lowered, or modified beyond stock dimensions.

If you want the shortest path to a cleaner swap, start with chassis-matched options. If you need maximum clearance and placement control, a universal adjustable kit may be the better fit.

Key Buying Factors for Racing Engine Mounts for Ls Swap

Chassis Compatibility

Confirm the mount is designed for your exact platform or body style. A mount that fits a square-body truck may not work correctly in a G-body, C1500, or custom street rod without modification.

Engine Family Support

Most LS swaps involve LS1, LS2, LS3, LS6, LQ4, LQ9, or similar engines. Make sure the mount supports your specific block height, accessory setup, and intended oil pan clearance.

Adjustability

Adjustable mounts help with firewall clearance, transmission angle, hood clearance, and exhaust routing. This matters even more in performance builds where driveline alignment affects durability and vibration.

Hardware and Material Quality

Look for complete kits with bolts, plates, bushings, and reinforcement where needed. Steel is common for strength, while billet aluminum can appeal to lighter, precision-oriented builds. The best choice depends on whether your priority is ruggedness, weight, or fine-tuned fitment.

Installation Complexity

Some kits are bolt-in friendly, while others are intended for fabrication-heavy projects. If you want less cutting and welding, choose a mount designed for your chassis rather than a universal adapter.

Who Should Buy Which Racing Engine Mounts for Ls Swap?

Buy a chassis-specific kit if you want the simplest install and are working with a common platform like an OBS Chevy, square-body truck, or G-body. Choose a universal adjustable kit if your build is custom, your engine placement is not factory-original, or you want more room for tuning fitment during mock-up.

For most buyers, the best Racing Engine Mounts for Ls Swap are the ones that balance fit, adjustment, and hardware completeness—not just the lowest price. Match the mount to your chassis first, then refine by material and adjustability.