The Trimatic has a distinctive, narrow, rectangular pan. Unlike the larger, almost square Turbo 350 pan with one cut corner, the Trimatic pan is notably slim.
Some tags feature a letter category, such as "Cat = A," which relates to the original vehicle application (e.g., WB commercial vs. passenger sedan). 2. Bellhousing and Case Features Full-Circle vs. Notched: holden trimatic identification
Identifying a Holden Trimatic transmission requires attention to detail and a basic understanding of its design and operation. By following the guidelines outlined in this article, you should be able to identify a Trimatic transmission and determine its type and application. Whether you're a seasoned Holden enthusiast or a newcomer to the world of Australian muscle cars, understanding the Holden Trimatic transmission is an essential part of appreciating these iconic vehicles. The Trimatic has a distinctive, narrow, rectangular pan
| Feature | 6-Cylinder (Red/Blue/Black) | V8 (253/308) | |--------|-----------------------------|---------------| | | Integral with pump body (cannot be removed separately) | Separate, removable bellhousing (aluminum) | | Converter bolt pattern | 3-bolt torque converter | 4-bolt torque converter | | Input shaft spline | 27 splines | 27 splines (same) but different converter hub | | Kickdown cable | Long cable to carby linkage | Shorter, V8-specific geometry | | Oil pan | Same basic pan but depth can vary slightly (some HD pans) | Same pan shape, but rare HD versions exist | passenger sedan)
The Holden Trimatic is a three-speed automatic transmission with a torque converter, planetary gearset, and a hydraulic control system. It features a longitudinal layout, with the transmission mounted behind the engine and connected to the rear axle via a driveshaft. The Trimatic has a reputation for being a robust and reliable transmission, capable of handling the demands of Australian driving conditions.
The Holden Trimatic was introduced in 1969 as a replacement for the earlier Powerglide transmission. It was designed to provide improved performance, fuel efficiency, and reliability. The Trimatic was manufactured by General Motors (GM) in Australia and was used in a range of Holden vehicles, including the Holden Monaro, Holden Commodore, and Holden Statesman.