Honda J series 3.5L V6 to GM Automatic Transmission Adapter Kit

Bridge the gap between Honda power and proven GM drivetrains.

This Honda J Series 3.5L V6 to GM Automatic Transmission Adapter Kit is built for serious swaps, giving you a clean and reliable way to mate a J35A4 engine to popular GM transmissions. Designed specifically for compatibility and strength, it takes the guesswork out of custom drivetrain setups.

If you're building a buggy or swap project and want Honda reliability with GM transmission options, this is the foundation that makes it work.

• Adapter system for Honda J35A4 to GM automatic transmissions
• Includes crank adapter and bellhousing adapter
• Includes new starter
• 153 tooth flexplate option available (SFI approved)
• Includes all required hardware
• Includes installation directions with pictures
• Made in the USA

• Only compatible with J35A4 engine due to bellhousing and oil pan differences across J-series motors
• Torque converter is required (sold separately)
• Engines capable of up to ~340HP on stock internals and ECU
• Designed for custom builds and swap applications

• Mount bellhousing adapter to engine
• Install crank adapter and flexplate
• Install provided starter
• Mate transmission to adapter assembly
• Install torque converter (required)
• Follow included instructions for full installation and torque specs