<strong>06. </strong> If you don’t have a correctly sized hydraulic ram for your setup, you can end up with steering that binds quickly or doesn’t move back and forth fast enough. On our Chevy 4x4, we first had a ram that was too big and didn’t move back and forth fast enough. Next, we had a ram that was too small and did not offer much help. This 1.75-inch-bore, 8-inch-stroke PSC ram was matched to our pump and steering box with the PSC kit.