ICT Billet SBC-to-LS Adapter Plate Universal Billet 551628 — CNC .17in Crank Offset, Includes Hardware

ICT Billet's SBC-to-LS adapter plate is a precision-machined billet aluminum motor-mount bracket that lets you install popular LS-series engines into vehicles originally built for Small Block Chevy (SBC) motors while preserving proper alignment and clearance.

Swapping an LS family engine into an SBC chassis requires more than just bolting in a new motor — you need consistent crank centerline alignment, robust mounting points, and hardware that matches OE fitment. This universal ICT Billet adapter plate set is produced in the U.S. from 3/8" aerospace-grade billet aluminum to OEM specifications, shifts the crankshaft centerline up by .17", and includes the necessary bolts for a straightforward installation.

How does this adapter maintain correct engine alignment?

The ICT Billet plate raises the engine position relative to the chassis by a precise .17", bringing the LS crank centerline into correct relation with SBC transmissions and drive components. The plates are CNC-machined to tight tolerances so both motor and crossmember mounting points align without additional fabrication.

• Crank centerline shift: +0.17 inches for correct driveline geometry
• OEM-spec hole pattern to match factory locations
• Billet construction minimizes flex under load

What hardware and components are included in the kit?

ICT Billet supplies the adapter kit with all fasteners required to attach the plates to engine mounts and the vehicle crossmember. Using the included hardware reduces the need to source special bolts and ensures the plates thread correctly into the M10-tapped holes.

• Two adapter plates—left and right
• Eight flat-head bolts for plate attachment
• Six M10-1.5 flange bolts for mounting (plates are M10 threaded)

Which LS engines and vehicle setups are compatible?

These adapter plates are designed to work with a broad range of GM LS engines and common Small Block Chevy chassis. They are compatible with LS1, LS2, LS3, LS6, LQ4, LQ9, L92, L99, L33, LR4 and similar variants when used with standard SBC motor mounts and transmission clearances.

• Engine families: LS1, LS2, LS3, LS6, LQ4, LQ9, L92, L99, L33, LR4
• Works with SBC mount locations and standard transmissions
• Intended for conventional motor mount swaps, not custom-frame extreme clearances

How durable is the construction and finish?

Manufactured in Wichita, Kansas from USA-produced aerospace-grade 3/8" billet aluminum, these plates resist deformation and provide long-term reliability under normal street and performance use. The natural aluminum finish is corrosion-resistant and ready for paint or powder-coating if desired.

• 3/8" billet aluminum for stiffness and durability
• Precision CNC machining for repeatable fitment
• Natural finish suitable for customization or direct use

Who is this for? If you're converting a vehicle originally fitted with a Small Block Chevy to a modern LS-family powerplant and you want a high-quality, U.S.-made mounting solution that preserves proper driveline geometry, this ICT Billet adapter plate set is an ideal choice. It suits professional shops, experienced DIY swappers, and performance builders who value precise fitment, included fasteners, and a durable billet-aluminum solution without extensive fabrication.