Maximum pump RPM is 7,000 RPM. Do not drive the pump beyond 7,000 RPMs. If you are using this pump on a custom build, you will need to calculate the correct pump pulley size to ensure you do not exceed 7,000 RPMs on the pump. The formula to calculate this is as follows:
𝑅𝑃𝑀-𝐸 = 𝑀𝑎𝑥𝑖𝑚𝑢𝑚 𝑅𝑃𝑀'𝑠 𝑦𝑜𝑢 𝑤𝑖𝑙𝑙 𝑟𝑢𝑛 𝑦𝑜𝑢𝑟 𝑒𝑛𝑔𝑖𝑛𝑒 𝑎𝑡 𝐷-𝐸 = 𝐷𝑖𝑎𝑚𝑒𝑡𝑒𝑟 𝑜𝑓 𝑒𝑛𝑔𝑖𝑛𝑒 𝑐𝑟𝑎𝑛𝑘 𝑝𝑢𝑙𝑙𝑒𝑦 𝑅𝑃𝑀-𝑃 = 𝑃𝑢𝑚𝑝 𝑅𝑃𝑀'𝑠 𝐷-𝑃 = 𝐷𝑖𝑎𝑚𝑒𝑡𝑒𝑟 𝑜𝑓 𝑝𝑢𝑚𝑝 𝑝𝑢𝑙𝑙𝑒𝑦.
Example: I have a LS engine I will run up to 6,000 RPM. The crank pulley diameter on the engine is 7-1/2”. What diameter pulley do I need to use on my Power Flow™ pump to make sure it doesn’t spin faster than 7,000 rpm?
𝐷𝑖𝑎𝑚𝑒𝑡𝑒𝑟 𝑜𝑓 𝑝𝑢𝑚𝑝 𝑝𝑢𝑙𝑙𝑒𝑦 𝐷-𝑃 = (6,000 × 7.5) ÷ 7,000 = 6.42 𝑖𝑛𝑐ℎ𝑒𝑠.
Since 6.42” diameter pump pulleys are not readily available, you would need to move to the next largest diameter, which would be 6-1/2”.