GM power steering pumps fall into two main categories:
- Large, usually called the Saginaw P-Series. Often called the “canned ham” due to the shape of the attached steel fluid reservoir. (on right in photo).
- Small, often used in passenger cars and called the Type 2. (on left in photo). Some have attached plastic reservoirs, some are set up for remote fluid reservoirs - like our Type-2 pump. One series is called the “TC” which has a smaller diameter shaft, .66” and rides on a bearing. The other series is called the “CB”, has a larger diameter shaft, .74” and rides on a bushing.
The P-Series was used during the classic muscle car era (1961-74) and typically had a v-belt pulley that attached with a key-way slot and was held on by a nut. Starting around 1975, the pulley and shaft changed to a press-on style. The pressure port was 5/8” SAE.
By 1980, the pressure port became 16mm o-ring style and by 1988, most of the pulleys were multi-groove for serpentine style belts.
The P-series has continued to be used in GM trucks and sometimes has a second return port for trucks with hydro-boost brake systems.
Type 2 pumps are most often used in passenger cars and have a 16mm o-ring pressure port.
Here at Kwik Performance, we have brackets that can mount either the P-Series or the Type 2 depending on the application. And we offer the pumps themselves as well.
Check out power steering pumps on this page of our website https://www.kwikperf.com/collections/power-steering