GM LS / SBC / BBC to Dodge ZF 8HP Transmission Adapter Kit

Upgrade your GM powered performance build with the FABbot Engineering GM LS / SBC / BBC to Dodge ZF 8HP Transmission Adapter Kit, engineered to mate compatible GM engines with Dodge pattern ZF 8HP automatic transmissions. This precision machined adapter system is designed for GM Gen III and Gen IV LS engines, Small Block Chevy (SBC), and Big Block Chevy (BBC) engines, providing a reliable mechanical solution for LS to 8HP swaps, SBC to 8HP conversions, BBC builds, restomods, street cars, and high performance custom vehicles.

Designed specifically for compatible Dodge pattern ZF 8HP70, 8HP75, 8HP90, and 8HP95 transmissions, this adapter kit combines precision CNC machining, billet aluminum construction, and application focused engineering to help integrate modern eight speed automatic transmission technology into GM powered projects.

Precision CNC Machined in Phoenix, Arizona

Every billet component included in the FABbot Engineering adapter system is designed, engineered, and CNC machined in house at FABbot Engineering in Phoenix, Arizona, USA.

The transmission adapter plate, torque converter adapter, and torque converter pilot slugs are precision machined from 6061-T6 billet aluminum. In house manufacturing allows FABbot Engineering to maintain direct control over critical dimensions, fitment, machining quality, and final inspection throughout the production process.

Kit Includes

The GM to Dodge ZF 8HP transmission adapter kit includes:

• CNC machined 6061-T6 billet aluminum transmission adapter plate
• CNC machined 6061-T6 billet aluminum torque converter adapter
• CNC machined 6061-T6 billet aluminum torque converter center pilot slugs for both 34mm and 46mm torque converter pilot diameters
• Engine, bellhousing, transmission, and adapter installation hardware

GM Engine Compatibility

This Dodge ZF 8HP adapter kit is designed for:

• GM Gen III / Gen IV LS series V8 engines
• Small Block Chevy (SBC) engines
• Big Block Chevy (BBC) engines

This provides a versatile mechanical adapter solution for LS to 8HP, SBC to 8HP, and BBC to 8HP transmission swaps.

Dodge ZF 8HP Transmission Compatibility

The adapter kit is designed for compatible Dodge pattern:

• ZF 8HP70
• ZF 8HP75
• ZF 8HP90
• ZF 8HP95

This kit is specifically designed for Dodge pattern 8HP transmissions and is not compatible with BMW or Jaguar pattern 8HP transmissions.

Transmission configurations can vary depending on year, engine, drivetrain, and vehicle options. Verify the specific transmission model and Dodge bellhousing pattern before purchasing.

Lightweight Billet Torque Converter Adapter

The included 6061-T6 billet aluminum torque converter adapter provides the mechanical connection between the GM flexplate and Dodge 8HP torque converter.

FABbot Engineering designed the adapter with rotating mass and moment of inertia in mind. Because the adapter becomes part of the rotating assembly, unnecessary mass toward the outside diameter was reduced while maintaining material where required for strength and function.

The distinctive scalloped outer profile strategically removes material from the outer portion of the adapter, helping reduce unnecessary rotating mass and moment of inertia. The result is a purpose built component where the design is functional rather than purely cosmetic.

Flat and Dished GM Flexplate Compatibility

The FABbot torque converter adapter supports both flat and dished GM flexplates found throughout LS, SBC, and BBC applications.

Supporting both flexplate configurations provides additional flexibility when selecting components for a specific GM engine and transmission combination.

34mm and 46mm Torque Converter Pilot Support

Compatible Dodge 8HP torque converters can use different center pilot diameters. For this reason, every kit includes CNC machined billet pilot slugs for both:

• 34mm torque converter pilot diameter
• 46mm torque converter pilot diameter

Both interchangeable pilot slugs are manufactured from 6061-T6 billet aluminum. Verify the torque converter pilot diameter during installation and use the appropriate supplied pilot.

The adapter system incorporates the required torque converter positioning and spacing relationship between the GM flexplate, torque converter adapter, Dodge 8HP torque converter, and transmission.

Why Use a ZF 8HP Behind an LS, SBC, or BBC?

The ZF 8HP has become a popular choice for performance transmission swaps because it combines modern automatic transmission technology with fast shifting, a wide gear ratio spread, and strong street drivability.

Key advantages include:

• Eight forward gears
• Extremely fast shift capability
• Wide overall gear ratio spread
• Excellent street drivability
• Strong performance potential
• Compact modern design
• Excellent highway cruising capability
• Broad OEM availability

Whether you're building an LS 8HP swap, SBC 8HP swap, BBC restomod, high horsepower street car, drag and drive car, or custom performance vehicle, this adapter system provides a precision machined solution for combining a GM engine with a modern Dodge pattern ZF 8HP transmission.

Common Dodge 8HP Donor Vehicles

Compatible Dodge pattern ZF 8HP transmissions can be found in Ram, Dodge, Chrysler, and Jeep applications. Common donor configurations include:

The donor vehicle table is provided as a reference. OEM transmission configurations can vary by model year, engine, drivetrain, trim, and production options. Always verify the actual transmission model and Dodge bellhousing pattern before purchasing a donor transmission.

What's Not Included

This kit provides the primary mechanical adapter components and installation hardware required to mate a compatible GM engine to a Dodge pattern ZF 8HP transmission.

Unless specifically listed above, the kit does not include:

• Transmission controller
• Wiring
• Programming
• Shifter
• Transmission cooler or plumbing
• Driveshaft
• Starter
• Flexplate
• Torque converter
• Other vehicle specific swap components

Engine, transmission, flexplate, torque converter, and vehicle compatibility should always be verified before ordering.

Frequently Asked Questions

What GM engines does this Dodge 8HP adapter fit?

The FABbot Engineering GM to Dodge 8HP adapter is designed for GM Gen III and Gen IV LS series V8 engines, Small Block Chevy (SBC), and Big Block Chevy (BBC) engines.

Which ZF 8HP transmissions are compatible?

The kit is designed for compatible Dodge pattern ZF 8HP70, 8HP75, 8HP90, and 8HP95 transmissions. It is not compatible with BMW or Jaguar pattern ZF 8HP transmissions.

Does the adapter work with flat and dished GM flexplates?

Yes. The torque converter adapter supports both flat and dished GM flexplates used across LS, SBC, and BBC applications.

Does the kit support both 34mm and 46mm torque converter pilots?

Yes. Every kit includes CNC machined billet torque converter pilot slugs for both 34mm and 46mm pilot diameters.

Where is the FABbot GM to Dodge 8HP adapter made?

The billet components are designed, engineered, and CNC machined in house by FABbot Engineering in Phoenix, Arizona, USA.

Built for GM to Dodge ZF 8HP Swaps

The FABbot Engineering GM LS / SBC / BBC to Dodge ZF 8HP Transmission Adapter Kit provides a precision machined, billet aluminum solution for connecting compatible GM engines to Dodge pattern ZF 8HP transmissions. With support for LS, SBC, and BBC engines, 8HP70, 8HP75, 8HP90, and 8HP95 transmissions, flat and dished GM flexplates, and 34mm and 46mm torque converter pilots, the system is engineered for a wide range of performance and custom transmission swap applications.

Designed, engineered, and CNC machined in house by FABbot Engineering in Phoenix, Arizona, USA.