Ford Small Block (289/300/302/351W/351C) to Ford Modular (ref.6R80) V8 Automatic Transmission Adapter Kit

Ford Small Block (289/300/302/351W/351C) to Ford Modular (ref.6R80) V8 Automatic Transmission Adapter Kit

ADDITIONAL PRODUCTS AVAILABLE:  If you are planning to purchase a Shift Controller option with your Adapter Kit, please see the link below to add the Throttle-position Sensor (TPS) Adapter Kit to suit your application.

TRANSMISSION STAND-ALONE CONTROLLERS & TPS ADAPTER KITS - ADD-TO-ORDER HERE

KIT Installation Videos

Our Partners over at BC Broncos have several videos on their YouTube! There are several videos showing you the full install. Also here is a full in-depth write-up in Bronco Driver Magazine about this kit! CLICK HERE 

KIT OVERVIEW

Kit Components:

• 1ea - Adapter Plate
• 1ea - Crank Spacer
• 2ea - Dowel Pins
• 1ea - Dust/Inspection Cover
• 1ea - Block Plate
• 1ea - High Torque Mini Starter
• 1ea - Hardware Kit

Upgrade Your Classic Ford with Confidence

Ford Small Block to Modular V8 Transmission Adapter Kit

Take your vintage Ford 260, 289, 300, 302, 351W, or 351C to the next level by pairing it with a modern Ford Modular transmission — including the 6R80 or 10R80 — using the thinnest, most compact adapter on the market.

Why Choose Our Kit?

• Ultra-Slim Design: Just 0.50" thick, our adapter is precision-machined from 6061 billet aluminum — no cutting, grinding, or modification required to your bellhousing.
• High Torque Ready: Comes with a high-torque mini starter built to handle up to 14:1 compression engines.
• Clean, OEM Fitment: We eliminate the need for a bulky torque converter spacer by using a custom crank spacer — letting you keep your OEM flex plate in place.
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Compatible Transmissions: 6R80 / 10R80 / 4R70 / 4R110 / 5R110

Built for Performance

• All hardware included is Grade 8 or higher — no compromises.
• Engineered for strength, precision, and ease of installation.

Optional Standalone Control

Bundle our kit with a US Shift transmission controller and receive up to $125 off the adapter kit price. A powerful, seamless upgrade — with everything you need in one package.