Schroeder
09-09-2015, 01:06 PM
I am currently in the process of selecting a GM type II power steering pump to run my upcoming hydroboost system and of course my steering gear box. I have a 600 gear box. I am currently using a saginaw box and this switch has been decided because the saginaw will not be able to meet my needs in my car. This steering box will be going in a road racing 77 trans am.
I spoke with hydratech and concept 1 pulleys. They recommended a type II pump that flows 2.11 GPM and has a pressure relief of 1300-1400 PSI. I will have an inline cooler for my PS/hydroboost system and a remote reservoir. I will be running a 4.5" diameter pulley to power the pump. My crank pulley diameter is 6.125". My idle RPM is 800 and I have a rev limiter set at 6500 RPM. I read on KRC's site that their (maybe not other manufacturers) aluminum pumps have a max RPM of 9000 and have a required pit speed of 1000-1500 RPM to flow enough and do their job at low speeds. Others who have adapted a type II pump to applications similar to mine have said that they haven't worried about these RPM restrictions on either end and have been fine. I called tuff stuff and they also said they have never heard of one of their units failing.
Can anyone direct me to a type II pump that meets my specs of comes close to them? I realize I may have to buy a different valve for the pump, and that's ok. I would like to believe there are out of the box solutions though. I haven't found them yet. This is going on a pontiac 400 block (461 stroker). I prefer a bump in the $100-$200 range. If I can safely open my specs up to a wider range I would think that I can find something.
I spoke with hydratech and concept 1 pulleys. They recommended a type II pump that flows 2.11 GPM and has a pressure relief of 1300-1400 PSI. I will have an inline cooler for my PS/hydroboost system and a remote reservoir. I will be running a 4.5" diameter pulley to power the pump. My crank pulley diameter is 6.125". My idle RPM is 800 and I have a rev limiter set at 6500 RPM. I read on KRC's site that their (maybe not other manufacturers) aluminum pumps have a max RPM of 9000 and have a required pit speed of 1000-1500 RPM to flow enough and do their job at low speeds. Others who have adapted a type II pump to applications similar to mine have said that they haven't worried about these RPM restrictions on either end and have been fine. I called tuff stuff and they also said they have never heard of one of their units failing.
Can anyone direct me to a type II pump that meets my specs of comes close to them? I realize I may have to buy a different valve for the pump, and that's ok. I would like to believe there are out of the box solutions though. I haven't found them yet. This is going on a pontiac 400 block (461 stroker). I prefer a bump in the $100-$200 range. If I can safely open my specs up to a wider range I would think that I can find something.