Holden Trimatic Identification

There are several variations of the Holden Trimatic transmission, each with its own unique characteristics and applications. Some of the most common types of Trimatic transmissions include:

| Model | Years | Typical Trimatic | |-------|-------|------------------| | HQ–WB 6-cyl | 1971–1984 | 6-cyl Trimatic | | HQ–WB V8 | 1971–1984 | V8 Trimatic (rare behind 308) | | Torana (LC–LX) | 1972–1978 | 6-cyl (some 4-cyl conversions) | | Commodore (VB–VK) | 1978–1986 | 6-cyl Trimatic; V8 early VB only | | Isuzu Gemini (early) | 1975–1978 | Trimatic (rare – 4-cylinder version) | | Toyota Corona/Cressida (Australian assembled) | Late 70s | Trimatic (different tailhousing) | holden trimatic identification

Holden produced two main Trimatic families: and V8 versions. They look similar but have critical differences. There are several variations of the Holden Trimatic

Yes -> Decipher the two letters.

Clean the pan edge with a rag. If you see a casting number like THM-120 or THM-180 , double-check. The true Trimatic case is usually stamped with a prefix like "T" or "K" followed by numbers. Yes -> Decipher the two letters