Holden Trimatic Identification [better]

Holden produced two main Trimatic families: and V8 versions. They look similar but have critical differences.

| 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 | holden trimatic identification