I have always had problems with the stock power steering pump boiling over when I do the HPDE events (makes a mess!!). For this build I upgraded to a KRC racing power steering pump and billet aluminum mount. The KRC pump has a 6-1/2” diameter pulley… my stock Chevy power steering pump had a 5-1/2” diameter pulley.
So far I have done one HPDE event with the KRC unit with no problems (no boil over). My educated guess is that the stock unit is not designed to run high RPM’s for extended periods. The speed of the pump is too fast and that creates extra heat. The KRC unit is better suited to running at higher RPM with the larger diameter pulley. This slows down the pump speed which helps to reduce power steering fluid temps. So far so good...no leaks the last time out.
The power steering pump is mounted high on drivers side of engine.
Here is a shot of the 6-1/2" diameter 6 rib KRC pulley. The mounting bracket was made by the engine builder.
