Comprehensive guide to the GM Muncie SM465 transmission — history, identification, specifications, rebuild info, and adaptability for Jeep and GM applications.

Favored by off-road drivers, the SM465 has a very low first gear suitable for rock-crawling. The SM465 has developed a reputation as a highly durable transmission. For the 1992 model-year, …

The SM465 is often considered the successor of the Muncie SM420. It is a fully synchronized, four speed manual transmission found in many GMC and Chevrolet pickups.

Mar 17, 2021 · Find high-quality remanufactured SM465 4-speed manual transmissions. Built for durability, reliability, and smooth shifting in heavy-duty applications.

Shop now for Parts and Tech Info specific to 1973-1991 Chevy & GMC 4x2 and 4x4 Trucks with SM465/CH465 4 Speed Manual Transmissions. In stock. Quick shipping.

The SM465 utilizes a standard H-pattern shift configuration, with the reverse gear positioned down and to the right. This transmission is ideal for the off-roader who needs the added …

The CH 465/SM465 transmission is a heavy duty four speed manual gearbox that was used from 1968 – 1991. It’s a top loading transmission, with a 12 inch long case that was initially made …

GM SM465 4-SPD Call for details on different parts varying on model of vehicle. 1-800-227-1523 © 1992 – 2026 Rockland Standard Gear; Inc. All Trademarks are owned by their respective …

Jul 26, 2025 · The SM465 brings more strength and broader parts support. If you’re picking between the two, we’ll break down what bolts up, what doesn’t, and what fails first.

First introduced in the early 1960s, the SM465 quickly became a favorite among car enthusiasts and mechanics alike. Its rugged design and excellent durability make it a great choice for a …