This Turbo 400 (TH400) tailshaft adapter is designed to bolt directly to a 4WD transmission, allowing the use of either a slip yoke or fixed yoke configuration. By eliminating the factory transfer case arrangement, this adapter shortens the overall drivetrain length by approximately 4.5 inches compared to a traditional 2WD Turbo 400 transmission setup.

Machined from 6061-T6 billet aluminum, this adapter provides a lightweight and durable solution for custom drivetrain, off-road, racing, and fabrication applications. Each adapter comes complete with the factory-style bushing and seal pre-installed for simplified installation.

Designed for compatibility with any 32 spline GM slip yoke, this TH400 adapter is an ideal solution for builders looking to maximize driveshaft length, improve packaging, and simplify custom drivetrain configurations.

This item is proudly designed, engineered, and manufactured in house at IMS.