Originally Posted by Steve Hellums
Woody, I don't want to question your knowledge. But here are the spec's of the Johnson Pumps. I don't get where you are getting 3.5 to 3.7 GPM. And I believe most people are running the 10-24504-03 CM30P7-1.
I think the pump flow rate specs and the actual flow when installed could be different. I don't think they measure the flow rate in any specific application. It's just like the HP ratings for a motor. Each application will determine the final RWHP delivered, due to driveline losses etc.