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GM Power Steering Pumps - Large and Small

GM Power Steering Pumps - Large and Small

Wayne Powell |

GM power steering pumps fall into two main categories:

  1. 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).
  2. 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