Page created by unknown. Additional info by ReaperHR and T.
New additions started May 9th 2007:
The Powerglide is a 2 speed automatic gearbox using a hydraulic torque converter. It was used by General Motors from the 1950s to the 1970s. Holden used the powerglide to replace the Hydramatic and it was later superseded itself by the Turbo Hydramatic or Tri-matic after other manufacturers had already moved from 2 speed automatics to 3 speed automatics. Chevrolet continued to use powerglide gearboxes into the early 1970s on their Novas and Vegas and they are still used today in racing (drag and mud) due to the boxes strength. The powerglide boxes have a 6 cylinder and V8 version which are very similar with the 6 cylinder box using many of the exact components the V8 box used, making it a very solid and reliable box for a Holden 6.
|HD||1965 - 1966||6||Column||7420946||1.82||1.82||Direct|
|HR||1966 - 1968||6||Column||7420946||1.82||1.82||Direct|
|HK||1968 - 1969||6||Column||7420946||1.82||1.82||Direct|
|HT||1969 - 1970||6||Column||7420946||1.82||1.82||Direct|
|253 & 308 V8||-||2805133||1.76||1.76||Direct|
|HG||1970 - 1971||6||Column||7420946||1.82||1.82||Direct|
|253 & 308 V8||Column||5258738||1.76||1.76||Direct|
|253 & 308 V8||Floor||2805133||1.76||1.76||Direct|
If a major failure does occur the gearbox should be removed, disassembled and inspected, and the converter may also need to be replaced. Otherwise the powerglide box does not need periodic transmission fluid changes. To keep the fluid in the best possible condition, a transmission cooler should be used.
The powerglide transmission uses a dipstick similar to the standard engine dipstick (but far longer) and it is a good habit to keep an eye on fluid level and colour, if the colour begins to darken or smells burnt then it should be dropped out of the box and new fluid used to refill.