K20 / K24 to LS Transmission Adapter
The K20/K24 to LS transmission adapter is the ultimate solution for pairing a Honda K-Series engine with any GM LS-based transmission. Designed for serious builds, this adapter allows you to run everything from a Powerglide to T56, AR5, TH400, 4L80E, and more—all with proper alignment and no guesswork.
This is the only adapter on the market that gives you full flexibility to run virtually any LS transmission behind a K-Series engine, making it the ideal choice for high-performance swaps and race applications.
Engineered for precision, this system maintains the factory 15-degree K-Series engine lean, ensuring proper drivetrain geometry without the need for spacers or shims.
What’s Included
- K20/K24 to LS Adapter Plate
- Flywheel Adapter
- Required Hardware
- Starter Location Modification Template
- Installation Instructions
Key Features
Universal LS Transmission Compatibility
Works with any GM LS transmission, including Powerglide, TH400, 4L60E, 4L80E, T56, TR6060, AR5, and more.
Maintains Proper Engine Geometry
Retains the factory 15° K-Series lean, eliminating the need for spacers or shims.
Run Any LS Flywheel or Flexplate
Compatible with LS flywheels and flexplates, allowing full flexibility in clutch and drivetrain setup.
Manual & Automatic Ready
Supports both manual and automatic LS transmission setups with proper pilot bearing integration.
Built for High Power Applications
Designed for drag, drift, and high-horsepower builds where strength and reliability matter.
What You’ll Need
K20 or K24 Engine (Honda K-Series)
Compatible with all K-Series engines. Minor clearancing of the block is required to accommodate starter placement.
LS-Based Transmission
Works with any transmission that bolts to an LS engine, including:
- Powerglide
- TH400 / TH350
- 4L60E / 4L80E
- T56 / TR6060
- AR5
Starter (Required, Not Included)
Uses an off-the-shelf Powermaster 9000 starter.
Flywheel / Flexplate (LS Compatible)
Any LS-pattern flywheel or flexplate can be used depending on your setup.
Perfect For
- K20 / K24 rear-wheel-drive swaps
- High horsepower drag builds
- Drift cars and track builds
- Custom drivetrain setups needing LS transmission compatibility
- Builders looking for maximum transmission flexibility
Why Choose FABbot
We specialize in solving complex drivetrain challenges with clean, well-engineered solutions. This adapter is designed to give you maximum flexibility, strength, and simplicity when building a K-Series swap with an LS transmission.
- One adapter for virtually any LS transmission
- Eliminates drivetrain alignment issues
- Built for real performance applications
- Designed and tested by experienced builders
📞 Questions or Want to Check Stock?
Call our sales line at 763-670-6941 — we’re happy to help!
