When I initially give the motor some gas the lower radiator hose on my 340 72 Cuda collapses and then opens back up. I went to NAPA and picked up a new hose and thought that it might have a spring inside, no luck. The new hose seems pretty pliant almost like the one on the car. Will the new hose collapse as well or who sells one with a spring inside? I am thinking about finding another hose at NAPA and pulling the spring out of it and putting it into the new hose. Any ideas?

Factory 26" radiator that flows 22GPM+, not sure what kind of water pump, RV etc.

Thanks