These pumps are assembled with 356-T6 heat treated aluminum castings. Precision CNC machined components. The fan hubs are 1/2" thick and machined from billet steel. These pumps are preferred by many top engine builders for higher RPM applications.
These Stage 3 water pumps feature 1/2" thick steel fan hub with set screw for positive positioning and 356-T6 heat treated aluminum casting. The S/B Chevy pump has an extra rigid cam stop with a 3/8" adjusting screw. The extra material adjacent to the block mounting bolts allows drilling and tapping up to 1/2" NPT holes for external cooling lines on S/B Chevy. There is higher flow and pressure for better cooling as well as equal flow to right and left cylinder heads. The 3/4" bearings offer 5 times the strength of standard bearings. Precision impeller installed to exacting tolerances. One year manufacturers warranty.
910-155 Instructions (PDF)
Learn how to choose the correct water pump for your application by reading our tech article. SBC - Short vs Long Water Pump.